Hi I am experiencing a problem when i attach two USB3 devices. With one USB3 device directly in machine everything works: [0.000000] DMI: GIGABYTE M4HM87P-00/M4HM87P-00, BIOS F5 06/23/2014 ... [0.701476] xhci_hcd 0000:00:14.0: xHCI Host Controller [0.701479] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1 [0.701558] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported [0.701615] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [0.701616] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [0.701617] usb usb1: Product: xHCI Host Controller [0.701618] usb usb1: Manufacturer: Linux 3.19.0-031900-generic xhci-hcd [0.701619] usb usb1: SerialNumber: 0000:00:14.0 [0.701686] hub 1-0:1.0: USB hub found [0.701701] hub 1-0:1.0: 14 ports detected [0.703873] xhci_hcd 0000:00:14.0: xHCI Host Controller [0.703875] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2 [0.703901] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003 [0.703903] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [0.703903] usb usb2: Product: xHCI Host Controller [0.703904] usb usb2: Manufacturer: Linux 3.19.0-031900-generic xhci-hcd [0.703905] usb usb2: SerialNumber: 0000:00:14.0 [0.703963] hub 2-0:1.0: USB hub found [0.703974] hub 2-0:1.0: 6 ports detected [0.704394] usb: failed to peer usb2-port4 and usb1-port5 by location (usb2-port4:none) (usb1-port5:usb2-port3) [0.704395] usb usb2-port4: failed to peer to usb1-port5 (-16) [0.704396] usb: port power management may be unreliable [0.704651] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [0.704655] ehci-pci: EHCI PCI platform driver [0.704716] ehci-pci 0000:00:1a.0: EHCI Host Controller [0.704719] ehci-pci 0000:00:1a.0: new USB bus registered, assigned bus number 3 [0.704729] ehci-pci 0000:00:1a.0: debug port 2 [0.708619] ehci-pci 0000:00:1a.0: cache line size of 64 is not supported [0.708629] ehci-pci 0000:00:1a.0: irq 16, io mem 0xf7e1c000 [0.716701] ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00 [0.716719] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002 [0.716720] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [0.716721] usb usb3: Product: EHCI Host Controller [0.716722] usb usb3: Manufacturer: Linux 3.19.0-031900-generic ehci_hcd [0.716723] usb usb3: SerialNumber: 0000:00:1a.0 [0.716804] hub 3-0:1.0: USB hub found [0.716807] hub 3-0:1.0: 2 ports detected [0.716936] ehci-pci 0000:00:1d.0: EHCI Host Controller [0.716939] ehci-pci 0000:00:1d.0: new USB bus registered, assigned bus number 4 [0.716949] ehci-pci 0000:00:1d.0: debug port 2 [0.720834] ehci-pci 0000:00:1d.0: cache line size of 64 is not supported [0.720843] ehci-pci 0000:00:1d.0: irq 23, io mem 0xf7e1b000 [0.732713] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00 [0.732733] usb usb4: New USB device found, idVendor=1d6b, idProduct=0002 [0.732734] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [0.732735] usb usb4: Product: EHCI Host Controller [0.732736] usb usb4: Manufacturer: Linux 3.19.0-031900-generic ehci_hcd [0.732737] usb usb4: SerialNumber: 0000:00:1d.0 [0.732823] hub 4-0:1.0: USB hub found [0.732826] hub 4-0:1.0: 2 ports detected [0.732898] ehci-platform: EHCI generic platform driver [0.732905] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [0.732908] ohci-pci: OHCI PCI platform driver [0.732916] ohci-platform: OHCI generic platform driver [0.732922] uhci_hcd: USB Universal Host Controller Interface driver [1.461325] usb 3-1: new high-speed USB device number 2 using ehci-pci [1.461337] usb 1-1: new low-speed USB device number 2 using xhci_hcd [1.461344] usb 4-1: new high-speed USB device number 2 using ehci-pci [1.593777] usb 3-1: New USB device found, idVendor=8087, idProduct=8008 [1.593778] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [1.594044] hub 3-1:1.0: USB hub found [1.594152] hub 3-1:1.0: 6 ports detected [1.594584] usb 1-1: New USB device found, idVendor=0603, idProduct=00f2 [1.594586] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [1.594587] usb 1-1: Product: USB Keyboard [1.594599] usb 1-1: Manufacturer: NOVATEK [1.594671] usb 1-1: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes [1.594673] usb 1-1: ep 0x82 - rounding interval to 64 microframes, ep desc says 80 microframes [1.761567] usb 1-4: new high-speed USB device number 3 using xhci_hcd ... [1.890557] usb 1-4: New USB device found, idVendor=2013, idProduct=0258 [1.890559] usb 1-4: New USB device strings: Mfr=3, Product=1, SerialNumber=2 [1.890570] usb 1-4: Product: PCTV 461 [1.890571] usb 1-4: Manufacturer: PCTV [1.890572] usb 1-4: SerialNumber: 0011421483 [1.902068] usb 4-1: New USB device found, idVendor=8087, idProduct=8000 [1.902070] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [1.902327] hub 4-1:1.0: USB hub found [1.902435] hub 4-1:1.0: 8 ports detected ... [2.057818] usb 1-9: new full-speed USB device number 4 using xhci_hcd [2.194402] usbcore: registered new interface driver usbhid [2.194403] usbhid: USB HID core driver [2.194838] input: NOVATEK USB Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/0003:0603:00F2.0001/input/input3 [2.250038] hid-generic 0003:0603:00F2.0001: input,hidraw0: USB HID v1.10 Keyboard [NOVATEK USB Keyboard] on usb-0000:00:14.0-1/input0 [2.251196] input: NOVATEK USB Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1/0003:0603:00F2.0002/input/input4 [2.306272] hid-generic 0003:0603:00F2.0002: input,hiddev0,hidraw1: USB HID v1.10 Device [NOVATEK USB Keyboard] on usb-0000:00:14.0-1/input1 [3.490243] usbcore: registered new interface driver btusb ________... [4.528227] em28xx: New device PCTV PCTV 461 @ 480 Mbps (2013:0258, interface 0, class 0) [4.528229] em28xx: DVB interface 0 found: isoc [4.528256] em28xx: chip ID is em28178 [4.899316] em28178 #0: EEPROM ID = 26 00 01 00, EEPROM hash = 0x193c7aa0 [4.899317] em28178 #0: EEPROM info: [4.899318] em28178 #0: microcode start address = 0x0004, boot configuration = 0x01 [4.906491] em28178 #0: AC97 audio (5 sample rates) [4.906492] em28178 #0: 500mA max power [4.906493] em28178 #0: Table at offset 0x27, strings=0x148c, 0x1874, 0x0a6a [4.906519] em28178 #0: Identified as PCTV DVB-S2 Stick (461e) (card=92) [4.906520] em28178 #0: dvb set to isoc mode. [4.906542] usbcore: registered new interface driver em28xx [4.909639] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.911096] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.911290] em28178 #0: Binding DVB extension [4.912399] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.913376] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.914054] i2c i2c-8: m88ds3103_attach: chip_id=70 [4.915380] i2c i2c-8: Added multiplexed i2c bus 9 [4.916882] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.944922] m88ts2022 9-0060: Montage M88TS2022 successfully identified [4.947800] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.948480] i2c i2c-8: a8293: Allegro A8293 SEC attached [4.948483] DVB: registering new adapter (em28178 #0) [4.948485] usb 1-4: DVB: registering adapter 0 frontend 0 (Montage M88DS3103)... [4.948704] em28178 #0: DVB extension successfully initialized [4.948706] em28xx: Registered (Em28xx dvb Extension) extension [4.950973] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.951632] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.951755] em28178 #0: Registering input extension [4.964124] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [4.988149] Registered IR keymap rc-pinnacle-pctv-hd [4.988222] input: em28xx IR (em28178 #0) as /devices/pci0000:00/0000:00:14.0/usb1/1-4/rc/rc0/input9 [4.988388] rc0: em28xx IR (em28178 #0) as /devices/pci0000:00/0000:00:14.0/usb1/1-4/rc/rc0 [4.988493] em28178 #0: Input extension successfully initalized [4.988495] em28xx: Registered (Em28xx Input Extension) extension ... [8.885961] i2c i2c-8: m88ds3103: found a 'Montage M88DS3103' in cold state [8.886244] i2c i2c-8: m88ds3103: downloading firmware from file 'dvb-demod-m88ds3103.fw' [9.126253] i2c i2c-8: m88ds3103: found a 'Montage M88DS3103' in warm state [9.126256] i2c i2c-8: m88ds3103: firmware version 3.B [9.130502] usb 1-4: DVB: adapter 0 frontend 0 frequency 0 out of range (950000..2150000) ===================================================================================== Using another device, things also work: [2.090675] usb 1-4: New USB device found, idVendor=2013, idProduct=025f [2.090677] usb 1-4: New USB device strings: Mfr=3, Product=1, SerialNumber=2 [2.090679] usb 1-4: Product: PCTV 292e [2.090680] usb 1-4: Manufacturer: PCTV [2.090681] usb 1-4: SerialNumber: 0011462272 ... [4.706193] em28xx: New device PCTV PCTV 292e @ 480 Mbps (2013:025f, interface 0, class 0) [4.706195] em28xx: DVB interface 0 found: isoc [4.706223] em28xx: chip ID is em28178 [6.667745] em28178 #0: EEPROM ID = 26 00 01 00, EEPROM hash = 0x5f0dff04 [6.667748] em28178 #0: EEPROM info: [6.667749] em28178 #0: microcode start address = 0x0004, boot configuration = 0x01 [6.673903] em28178 #0: AC97 audio (5 sample rates) [6.673905] em28178 #0: 500mA max power [6.673907] em28178 #0: Table at offset 0x27, strings=0x146a, 0x1888, 0x0a7e [6.673958] em28178 #0: Identified as PCTV tripleStick (292e) (card=94) [6.673959] em28178 #0: dvb set to isoc mode. [6.673982] usbcore: registered new interface driver em28xx [6.845126] em28178 #0: Binding DVB extension [6.947136] i2c i2c-8: Added multiplexed i2c bus 9 [6.947139] si2168 8-0064: Silicon Labs Si2168 successfully attached [6.949825] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [6.950762] si2157 9-0060: Silicon Labs Si2147/2148/2157/2158 successfully attached [6.950767] DVB: registering new adapter (em28178 #0) [6.950770] usb 1-4: DVB: registering adapter 0 frontend 0 (Silicon Labs Si2168)... [6.952023] em28178 #0: DVB extension successfully initialized [6.952026] em28xx: Registered (Em28xx dvb Extension) extension [6.954121] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [6.955281] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [6.955517] em28178 #0: Registering input extension [6.958049] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [6.981830] Registered IR keymap rc-pinnacle-pctv-hd [6.981895] input: em28xx IR (em28178 #0) as /devices/pci0000:00/0000:00:14.0/usb1/1-4/rc/rc0/input9 [6.981935] rc0: em28xx IR (em28178 #0) as /devices/pci0000:00/0000:00:14.0/usb1/1-4/rc/rc0 [6.982039] em28178 #0: Input extension successfully initalized [6.982041] em28xx: Registered (Em28xx Input Extension) extension ... [10.875764] si2168 8-0064: found a 'Silicon Labs Si2168' in cold state [10.875802] si2168 8-0064: downloading firmware from file 'dvb-demod-si2168-b40-01.fw' [11.032401] si2168 8-0064: found a 'Silicon Labs Si2168' in warm state [11.082598] usb 1-4: DVB: adapter 0 frontend 0 frequency 0 out of range (110000000..862000000) =============================================================================================== BUT with both devices plugged in at the same time, lightbulbs explode and it starts raining lampreys: [1.893481] usb 1-3: New USB device found, idVendor=2013, idProduct=025f [1.893483] usb 1-3: New USB device strings: Mfr=3, Product=1, SerialNumber=2 [1.893494] usb 1-3: Product: PCTV 292e [1.893495] usb 1-3: Manufacturer: PCTV [1.893496] usb 1-3: SerialNumber: 0011462272 [1.905130] usb 4-1: New USB device found, idVendor=8087, idProduct=8000 [1.905132] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [1.905388] hub 4-1:1.0: USB hub found [1.905508] hub 4-1:1.0: 8 ports detected [2.060849] usb 1-4: new high-speed USB device number 4 using xhci_hcd ____________________ [2.189399] usb 1-4: New USB device found, idVendor=2013, idProduct=0258 [2.189400] usb 1-4: New USB device strings: Mfr=3, Product=1, SerialNumber=2 [2.189402] usb 1-4: Product: PCTV 461 [2.189403] usb 1-4: Manufacturer: PCTV [2.189404] usb 1-4: SerialNumber: 0011421483 [2.357082] usb 1-9: new full-speed USB device number 5 using xhci_hcd [2.485530] usb 1-9: No LPM exit latency info found, disabling LPM. [2.486643] usb 1-9: New USB device found, idVendor=13d3, idProduct=3414 [2.486645] usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [2.486647] usb 1-9: Product: Bluetooth Radio [2.486658] usb 1-9: Manufacturer: Realtek [2.486659] usb 1-9: SerialNumber: 00e04c000001 _______________________________________ [4.816694] em28xx: New device PCTV PCTV 292e @ 480 Mbps (2013:025f, interface 0, class 0) [4.816695] em28xx: DVB interface 0 found: isoc [4.816728] em28xx: chip ID is em28178 [6.778800] em28178 #0: EEPROM ID = 26 00 01 00, EEPROM hash = 0x5f0dff04 [6.778802] em28178 #0: EEPROM info: [6.778804] em28178 #0: microcode start address = 0x0004, boot configuration = 0x01 [6.785016] em28178 #0: AC97 audio (5 sample rates) [6.785018] em28178 #0: 500mA max power [6.785019] em28178 #0: Table at offset 0x27, strings=0x146a, 0x1888, 0x0a7e [6.785059] em28178 #0: Identified as PCTV tripleStick (292e) (card=94) [6.785060] em28178 #0: dvb set to isoc mode. [6.785077] em28xx: New device PCTV PCTV 461 @ 480 Mbps (2013:0258, interface 0, class 0) [6.785078] em28xx: DVB interface 0 found: isoc [6.785105] em28xx: chip ID is em28178 [6.791739] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [6.792598] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.156042] em28178 #1: EEPROM ID = 26 00 01 00, EEPROM hash = 0x193c7aa0 [7.156044] em28178 #1: EEPROM info: [ 7.156045] em28178 #1: microcode start address = 0x0004, boot configuration = 0x01 [7.163153] em28178 #1: AC97 audio (5 sample rates) [7.163155] em28178 #1: 500mA max power [7.163156] em28178 #1: Table at offset 0x27, strings=0x148c, 0x1874, 0x0a6a [7.163180] em28178 #1: Identified as PCTV DVB-S2 Stick (461e) (card=92) [7.163182] em28178 #1: dvb set to isoc mode. [7.163199] usbcore: registered new interface driver em28xx [7.164856] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.165053] em28178 #0: Binding DVB extension [7.165059] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.166108] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.166931] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.167786] i2c i2c-8: Added multiplexed i2c bus 11 [7.167789] si2168 8-0064: Silicon Labs Si2168 successfully attached [7.334972] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.336419] si2157 11-0060: Silicon Labs Si2147/2148/2157/2158 successfully attached [7.336424] DVB: registering new adapter (em28178 #0) [7.336426] usb 1-3: DVB: registering adapter 0 frontend 0 (Silicon Labs Si2168)... [7.336612] em28178 #0: DVB extension successfully initialized [7.336613] em28178 #1: Binding DVB extension [7.341088] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.341761] i2c i2c-10: m88ds3103_attach: chip_id=70 [7.343082] i2c i2c-10: Added multiplexed i2c bus 12 [7.345221] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.377363] m88ts2022 12-0060: Montage M88TS2022 successfully identified [7.378638] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.379580] i2c i2c-10: a8293: Allegro A8293 SEC attached [7.379583] DVB: registering new adapter (em28178 #1) [7.379587] usb 1-4: DVB: registering adapter 1 frontend 0 (Montage M88DS3103)... [7.379855] em28178 #1: DVB extension successfully initialized [7.379858] em28xx: Registered (Em28xx dvb Extension) extension [7.381603] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.381606] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.383623] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.383625] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.383844] em28178 #0: Registering input extension [7.386581] Request for unknown module key 'Magrathea: Glacier signing key: 007271576a09d86ef244371b0633e47abb75b89d' err -11 [7.409164] Registered IR keymap rc-pinnacle-pctv-hd [7.409268] input: em28xx IR (em28178 #0) as /devices/pci0000:00/0000:00:14.0/usb1/1-3/rc/rc0/input9 [7.409343] rc0: em28xx IR (em28178 #0) as /devices/pci0000:00/0000:00:14.0/usb1/1-3/rc/rc0 [7.409441] em28178 #0: Input extension successfully initalized [7.409443] em28178 #1: Registering input extension [7.409562] Registered IR keymap rc-pinnacle-pctv-hd [7.409630] input: em28xx IR (em28178 #1) as /devices/pci0000:00/0000:00:14.0/usb1/1-4/rc/rc1/input10 [7.409685] rc1: em28xx IR (em28178 #1) as /devices/pci0000:00/0000:00:14.0/usb1/1-4/rc/rc1 [7.409793] em28178 #1: Input extension successfully initalized [7.409795] em28xx: Registered (Em28xx Input Extension) extension _______..._ [11.322105] i2c i2c-10: m88ds3103: found a 'Montage M88DS3103' in cold state [11.323547] i2c i2c-10: m88ds3103: downloading firmware from file 'dvb-demod-m88ds3103.fw' [11.564252] i2c i2c-10: m88ds3103: found a 'Montage M88DS3103' in warm state [11.564255] i2c i2c-10: m88ds3103: firmware version 3.B [11.568385] usb 1-4: DVB: adapter 1 frontend 0 frequency 0 out of range (950000..2150000) [11.578035] si2168 8-0064: found a 'Silicon Labs Si2168' in cold state [11.578079] si2168 8-0064: downloading firmware from file 'dvb-demod-si2168-b40-01.fw' [11.734556] si2168 8-0064: found a 'Silicon Labs Si2168' in warm state [11.784791] usb 1-3: DVB: adapter 0 frontend 0 frequency 0 out of range (110000000..862000000) ... [110.790171] xhci_hcd 0000:00:14.0: xHCI host not responding to stop endpoint command. [110.790180] xhci_hcd 0000:00:14.0: Assuming host is dying, halting host. [110.790267] Bluetooth: hci0 urb ffff880406cf43c0 failed to resubmit (22) [110.790276] Bluetooth: hci0 urb ffff880406756cc0 failed to resubmit (22) [110.790282] Bluetooth: hci0 urb ffff8804067560c0 failed to resubmit (22) [110.790292] xhci_hcd 0000:00:14.0: HC died; cleaning up [110.790404] usb 1-1: USB disconnect, device number 2 [110.790432] em28178 #0: writing to i2c device at 0xc8 failed (error=-19) [110.790442] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [110.790451] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [110.790457] em28178 #0: writing to i2c device at 0xc8 failed (error=-19) [110.790462] si2168 8-0064: i2c write failed=-19 [110.790467] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [110.790471] i2c i2c-10: m88ds3103: i2c wr failed=-19 reg=07 len=1 [110.790475] em28178 #0: writing to i2c device at 0xc8 failed (error=-19) [110.790479] si2168 8-0064: i2c write failed=-19 [110.790834] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [110.790856] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=7e len=1 [110.790863] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [110.790871] i2c i2c-10: m88ds3103: i2c wr failed=-19 [110.790877] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [110.790882] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d5 len=3 [110.790887] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [110.790892] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=8c len=3 [110.886338] usb 1-3: USB disconnect, device number 3 [110.886371] em28178 #0: Disconnecting em28178 #0 [110.886373] em28178 #0: Closing DVB extension [111.791776] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [111.791786] i2c i2c-10: m88ds3103: i2c wr failed=-19 reg=07 len=1 [113.843695] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [113.843699] i2c i2c-10: m88ds3103: i2c wr failed=-19 reg=07 len=1 [116.842995] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [116.843007] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [119.845402] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [119.845414] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [120.900234] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [120.900246] i2c i2c-10: m88ds3103: i2c wr failed=-19 reg=07 len=1 [123.900636] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [123.900648] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [126.902986] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [126.902998] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [128.957689] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [128.957700] i2c i2c-10: m88ds3103: i2c wr failed=-19 reg=07 len=1 [131.958995] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [131.959007] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [134.961378] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [134.961384] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [137.015056] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [137.015061] i2c i2c-10: m88ds3103: i2c wr failed=-19 reg=07 len=1 [140.017370] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [140.017374] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [143.019779] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [143.019790] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [144.071535] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [144.071546] i2c i2c-10: m88ds3103: i2c wr failed=-19 reg=07 len=1 [145.385954] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.385967] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=a2 len=1 [145.385990] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386002] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.386113] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386123] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=a2 len=1 [145.386148] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386160] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.386211] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386220] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=a2 len=1 [145.386240] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386246] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.386326] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386335] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=a2 len=1 [145.386353] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386364] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.386484] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386492] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=a2 len=1 [145.386508] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386515] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.386581] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386589] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=a2 len=1 [145.386603] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.386611] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [145.387143] em28178 #1: writing to i2c device at 0x10 failed (error=-19) [145.387152] i2c i2c-10: a8293: i2c failed=-19 rd=0 [145.387167] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.387176] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.387272] em28178 #1: writing to i2c device at 0x10 failed (error=-19) [145.387279] i2c i2c-10: a8293: i2c failed=-19 rd=0 [145.387294] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.387302] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=0d len=1 [145.387354] em28178 #1: writing to i2c device at 0x10 failed (error=-19) [145.387362] i2c i2c-10: a8293: i2c failed=-19 rd=0 [145.387372] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.387381] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.387446] em28178 #1: writing to i2c device at 0x10 failed (error=-19) [145.387453] i2c i2c-10: a8293: i2c failed=-19 rd=0 [145.387464] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.387472] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.387627] em28178 #1: writing to i2c device at 0x10 failed (error=-19) [145.387634] i2c i2c-10: a8293: i2c failed=-19 rd=0 [145.387644] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.387652] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 [145.387803] em28178 #1: writing to i2c device at 0x10 failed (error=-19) [145.387810] i2c i2c-10: a8293: i2c failed=-19 rd=0 [145.387820] em28178 #1: writing to i2c device at 0xd0 failed (error=-19) [145.387828] i2c i2c-10: m88ds3103: i2c rd failed=-19 reg=d1 len=1 ... etc ... Tried different kernel versions (3.12, 3.14, 3.17, 3.18, 3.19) to no avail. Bought an USB2 hub and tried plugging the USB3 devices into that instead of directly into USB3 ports on the motherboard - problem persists. Removing all other USB hardware and blacklisting btusb for the built-in hardware doesn’t make any difference. Output from lsusb -v attached. Is there any debug info I can extract that would help solve this problem? BR Karsten
Bus 004 Device 002: ID 8087:8000 Intel Corp. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 1 Single TT bMaxPacketSize0 64 idVendor 0x8087 Intel Corp. idProduct 0x8000 bcdDevice 0.05 iManufacturer 0 iProduct 0 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0002 1x 2 bytes bInterval 12 Hub Descriptor: bLength 11 bDescriptorType 41 nNbrPorts 8 wHubCharacteristic 0x0009 Per-port power switching Per-port overcurrent protection TT think time 8 FS bits bPwrOn2PwrGood 0 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x00 0x00 PortPwrCtrlMask 0xff 0xff Hub Port Status: Port 1: 0000.0100 power Port 2: 0000.0100 power Port 3: 0000.0100 power Port 4: 0000.0100 power Port 5: 0000.0100 power Port 6: 0000.0100 power Port 7: 0000.0100 power Port 8: 0000.0100 power Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0001 Self Powered Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 64 idVendor 0x1d6b Linux Foundation idProduct 0x0002 2.0 root hub bcdDevice 3.19 iManufacturer 3 Linux 3.19.0-031900-generic ehci_hcd iProduct 2 EHCI Host Controller iSerial 1 0000:00:1d.0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 2 wHubCharacteristic 0x000a No power switching (usb 1.0) Per-port overcurrent protection bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x02 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0507 highspeed power suspend enable connect Port 2: 0000.0100 power Device Status: 0x0001 Self Powered Bus 003 Device 002: ID 8087:8008 Intel Corp. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 1 Single TT bMaxPacketSize0 64 idVendor 0x8087 Intel Corp. idProduct 0x8008 bcdDevice 0.05 iManufacturer 0 iProduct 0 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0001 1x 1 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 6 wHubCharacteristic 0x0009 Per-port power switching Per-port overcurrent protection TT think time 8 FS bits bPwrOn2PwrGood 0 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x00 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0100 power Port 2: 0000.0100 power Port 3: 0000.0100 power Port 4: 0000.0100 power Port 5: 0000.0100 power Port 6: 0000.0100 power Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0001 Self Powered Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 64 idVendor 0x1d6b Linux Foundation idProduct 0x0002 2.0 root hub bcdDevice 3.19 iManufacturer 3 Linux 3.19.0-031900-generic ehci_hcd iProduct 2 EHCI Host Controller iSerial 1 0000:00:1a.0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 2 wHubCharacteristic 0x000a No power switching (usb 1.0) Per-port overcurrent protection bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x02 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0507 highspeed power suspend enable connect Port 2: 0000.0100 power Device Status: 0x0001 Self Powered Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 3.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 3 bMaxPacketSize0 9 idVendor 0x1d6b Linux Foundation idProduct 0x0003 3.0 root hub bcdDevice 3.19 iManufacturer 3 Linux 3.19.0-031900-generic xhci-hcd iProduct 2 xHCI Host Controller iSerial 1 0000:00:14.0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 31 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 bMaxBurst 0 Hub Descriptor: bLength 12 bDescriptorType 42 nNbrPorts 6 wHubCharacteristic 0x000a No power switching (usb 1.0) Per-port overcurrent protection bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere bHubDecLat 0.0 micro seconds wHubDelay 0 nano seconds DeviceRemovable 0x00 Hub Port Status: Port 1: 0000.02a0 5Gbps power Rx.Detect Port 2: 0000.02a0 5Gbps power Rx.Detect Port 3: 0000.02a0 5Gbps power Rx.Detect Port 4: 0000.02a0 5Gbps power Rx.Detect Port 5: 0000.02a0 5Gbps power Rx.Detect Port 6: 0000.02a0 5Gbps power Rx.Detect Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 15 bNumDeviceCaps 1 SuperSpeed USB Device Capability: bLength 10 bDescriptorType 16 bDevCapabilityType 3 bmAttributes 0x02 Latency Tolerance Messages (LTM) Supported wSpeedsSupported 0x0008 Device can operate at SuperSpeed (5Gbps) bFunctionalitySupport 3 Lowest fully-functional device speed is SuperSpeed (5Gbps) bU1DevExitLat 10 micro seconds bU2DevExitLat 512 micro seconds Device Status: 0x0001 Self Powered Bus 001 Device 004: ID 13d3:3414 IMC Networks Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 224 Wireless bDeviceSubClass 1 Radio Frequency bDeviceProtocol 1 Bluetooth bMaxPacketSize0 64 idVendor 0x13d3 IMC Networks idProduct 0x3414 bcdDevice 2.00 iManufacturer 1 Realtek iProduct 2 Bluetooth Radio iSerial 3 00e04c000001 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 177 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 4 Bluetooth Radio Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 4 Bluetooth Radio Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 4 Bluetooth Radio Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0009 1x 9 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0009 1x 9 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 4 Bluetooth Radio Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0011 1x 17 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0011 1x 17 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 3 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 4 Bluetooth Radio Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0019 1x 25 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0019 1x 25 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 4 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 4 Bluetooth Radio Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0021 1x 33 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0021 1x 33 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 5 bNumEndpoints 2 bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth iInterface 4 Bluetooth Radio Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0031 1x 49 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0031 1x 49 bytes bInterval 1 Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 12 bNumDeviceCaps 1 USB 2.0 Extension Device Capability: bLength 7 bDescriptorType 16 bDevCapabilityType 2 bmAttributes 0x00000002 Link Power Management (LPM) Supported Device Status: 0x0001 Self Powered Bus 001 Device 003: ID 2013:0258 PCTV Systems Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x2013 PCTV Systems idProduct 0x0258 bcdDevice 1.00 iManufacturer 3 PCTV iProduct 1 PCTV 461 iSerial 2 0011421483 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 41 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x03ac 1x 940 bytes bInterval 1 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0000 (Bus Powered) Bus 001 Device 002: ID 2013:025f PCTV Systems Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x2013 PCTV Systems idProduct 0x025f bcdDevice 1.00 iManufacturer 3 PCTV iProduct 1 PCTV 292e iSerial 2 0011462272 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 41 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0000 1x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x03ac 1x 940 bytes bInterval 1 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0000 (Bus Powered) Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 1 Single TT bMaxPacketSize0 64 idVendor 0x1d6b Linux Foundation idProduct 0x0002 2.0 root hub bcdDevice 3.19 iManufacturer 3 Linux 3.19.0-031900-generic xhci-hcd iProduct 2 xHCI Host Controller iSerial 1 0000:00:14.0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 Hub Descriptor: bLength 11 bDescriptorType 41 nNbrPorts 14 wHubCharacteristic 0x000a No power switching (usb 1.0) Per-port overcurrent protection TT think time 8 FS bits bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x00 0x00 PortPwrCtrlMask 0xff 0xff Hub Port Status: Port 1: 0000.0503 highspeed power enable connect Port 2: 0000.0100 power Port 3: 0000.0503 highspeed power enable connect Port 4: 0000.0100 power Port 5: 0000.0100 power Port 6: 0000.0100 power Port 7: 0000.0100 power Port 8: 0000.0100 power Port 9: 0000.0103 power enable connect Port 10: 0000.0100 power Port 11: 0000.0100 power Port 12: 0000.0100 power Port 13: 0000.0100 power Port 14: 0000.0100 power Device Status: 0x0001 Self Powered