[1.] One line summary of the problem: DWC3 USB 3.0 not working on Odroid-XU4 with Exynos 5422 [2.] Full description of the problem/report: No usb 3.0 devices are being detected when attached while USB 2.0 devices work on the same port. USB 3.0 works after applying patches [9.1] and [9.2], but seems to be buggy. The usb hub is redetected every time an usb device is attached. dmesg: [ 192.287080] usb 3-1.2: USB disconnect, device number 7 [ 210.370699] hub 3-1:1.0: hub_ext_port_status failed (err = -71) [ 210.375159] usb 3-1-port2: connect-debounce failed [ 210.380126] usb 3-1: USB disconnect, device number 5 [ 210.488917] usb 4-1: USB disconnect, device number 3 [ 210.708861] usb 3-1: new high-speed USB device number 9 using xhci- hcd [ 210.851308] usb 3-1: New USB device found, idVendor=05e3, idProduct=0610 [ 210.856530] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 210.863696] usb 3-1: Product: USB2.0 Hub [ 210.867721] usb 3-1: Manufacturer: GenesysLogic [ 210.877800] hub 3-1:1.0: USB hub found [ 210.880600] hub 3-1:1.0: 2 ports detected [ 210.913438] [drm:hdmi_probe] *ERROR* Failed to get ddc i2c adapter by node [ 211.468970] usb 3-1.2: new high-speed USB device number 10 using xhci-hcd [ 211.579279] usb 3-1.2: New USB device found, idVendor=0951, idProduct=1666 [ 211.584667] usb 3-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 211.592002] usb 3-1.2: Product: DataTraveler 3.0 [ 211.596720] usb 3-1.2: Manufacturer: Kingston [ 211.601075] usb 3-1.2: SerialNumber: 00190F0C0295BE711962B008 [ 211.607557] usb-storage 3-1.2:1.0: USB Mass Storage device detected [ 211.613640] scsi host0: usb-storage 3-1.2:1.0 [ 211.620179] [drm:hdmi_probe] *ERROR* Failed to get ddc i2c adapter by node [ 212.677008] scsi 0:0:0:0: Direct-Access Kingston DataTraveler 3.0 PMAP PQ: 0 ANSI: 6 [ 212.685208] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 212.687323] [drm:hdmi_probe] *ERROR* Failed to get ddc i2c adapter by node [ 214.209074] usb 4-1: new SuperSpeed USB device number 4 using xhci- hcd [ 214.231660] usb 4-1: New USB device found, idVendor=05e3, idProduct=0616 [ 214.236882] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 214.244057] usb 4-1: Product: USB3.0 Hub [ 214.248060] usb 4-1: Manufacturer: GenesysLogic [ 214.254181] hub 4-1:1.0: USB hub found [ 214.256754] hub 4-1:1.0: 2 ports detected [ 214.264279] [drm:hdmi_probe] *ERROR* Failed to get ddc i2c adapter by node [ 214.634773] sd 0:0:0:0: [sda] 61457664 512-byte logical blocks: (31.5 GB/29.3 GiB) [ 214.641164] sd 0:0:0:0: [sda] Write Protect is off [ 214.645631] sd 0:0:0:0: [sda] Mode Sense: 23 00 00 00 [ 214.645900] sd 0:0:0:0: [sda] No Caching mode page found [ 214.650978] sd 0:0:0:0: [sda] Assuming drive cache: write through [ 214.682552] sda: sda1 [ 214.685165] sd 0:0:0:0: [sda] Attached SCSI removable disk [ 234.526936] usb 3-1.2: USB disconnect, device number 10 [3.] Keywords (i.e., modules, networking, kernel): usb 3.0, dwc3, exynos, odroid [4.] Kernel information 4.6.x, 4.7.x [4.1.] Kernel version (from /proc/version): Linux version 4.7.2+ (c0d3@z3r0) (gcc version 5.3.1 20160113 (Linaro GCC 5.3-2016.02) ) #1 SMP Sun Aug 28 18:52:25 CEST 2016 [4.2.] Kernel .config file: #cat .config | grep -E "(USB|DWC|DRD).*=(m|y)" CONFIG_CAN_EMS_USB=m CONFIG_CAN_ESD_USB2=m CONFIG_CAN_GS_USB=m CONFIG_CAN_KVASER_USB=m CONFIG_CAN_PEAK_USB=m CONFIG_CAN_8DEV_USB=m CONFIG_BT_HCIBTUSB=m CONFIG_BT_HCIBTUSB_BCM=y CONFIG_BT_HCIBTUSB_RTL=y CONFIG_USB_NET_DRIVERS=y CONFIG_USB_CATC=m CONFIG_USB_KAWETH=m CONFIG_USB_PEGASUS=m CONFIG_USB_RTL8150=m CONFIG_USB_RTL8152=m CONFIG_USB_USBNET=m CONFIG_USB_NET_AX8817X=m CONFIG_USB_NET_AX88179_178A=m CONFIG_USB_NET_CDCETHER=m CONFIG_USB_NET_CDC_EEM=m CONFIG_USB_NET_CDC_NCM=m CONFIG_USB_NET_HUAWEI_CDC_NCM=m CONFIG_USB_NET_CDC_MBIM=m CONFIG_USB_NET_DM9601=m CONFIG_USB_NET_SR9700=m CONFIG_USB_NET_SR9800=m CONFIG_USB_NET_SMSC75XX=m CONFIG_USB_NET_SMSC95XX=m CONFIG_USB_NET_GL620A=m CONFIG_USB_NET_NET1080=m CONFIG_USB_NET_PLUSB=m CONFIG_USB_NET_MCS7830=m CONFIG_USB_NET_RNDIS_HOST=m CONFIG_USB_NET_CDC_SUBSET_ENABLE=m CONFIG_USB_NET_CDC_SUBSET=m CONFIG_USB_ALI_M5632=y CONFIG_USB_AN2720=y CONFIG_USB_BELKIN=y CONFIG_USB_ARMLINUX=y CONFIG_USB_EPSON2888=y CONFIG_USB_KC2190=y CONFIG_USB_NET_ZAURUS=m CONFIG_USB_NET_CX82310_ETH=m CONFIG_USB_NET_KALMIA=m CONFIG_USB_NET_QMI_WWAN=m CONFIG_USB_HSO=m CONFIG_USB_NET_INT51X1=m CONFIG_USB_CDC_PHONET=m CONFIG_USB_IPHETH=m CONFIG_USB_SIERRA_NET=m CONFIG_USB_VL600=m CONFIG_ATH6KL_USB=m CONFIG_AT76C50X_USB=m CONFIG_BRCMFMAC_USB=y CONFIG_P54_USB=m CONFIG_LIBERTAS_USB=m CONFIG_LIBERTAS_THINFIRM_USB=m CONFIG_RT2500USB=m CONFIG_RT73USB=m CONFIG_RT2800USB=m CONFIG_RT2800USB_RT33XX=y CONFIG_RT2800USB_RT35XX=y CONFIG_RT2800USB_RT3573=y CONFIG_RT2800USB_RT53XX=y CONFIG_RT2800USB_RT55XX=y CONFIG_RT2X00_LIB_USB=m CONFIG_RTLWIFI_USB=m CONFIG_RSI_USB=m CONFIG_USB_NET_RNDIS_WLAN=m CONFIG_WIMAX_I2400M_USB=m CONFIG_MOUSE_SYNAPTICS_USB=m CONFIG_TABLET_USB_ACECAD=m CONFIG_TABLET_USB_AIPTEK=m CONFIG_TABLET_USB_GTCO=m CONFIG_TABLET_USB_HANWANG=m CONFIG_TABLET_USB_KBTAB=m CONFIG_TOUCHSCREEN_USB_COMPOSITE=m CONFIG_TOUCHSCREEN_USB_EGALAX=y CONFIG_TOUCHSCREEN_USB_PANJIT=y CONFIG_TOUCHSCREEN_USB_3M=y CONFIG_TOUCHSCREEN_USB_ITM=y CONFIG_TOUCHSCREEN_USB_ETURBO=y CONFIG_TOUCHSCREEN_USB_GUNZE=y CONFIG_TOUCHSCREEN_USB_DMC_TSC10=y CONFIG_TOUCHSCREEN_USB_IRTOUCH=y CONFIG_TOUCHSCREEN_USB_IDEALTEK=y CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH=y CONFIG_TOUCHSCREEN_USB_GOTOP=y CONFIG_TOUCHSCREEN_USB_JASTEC=y CONFIG_TOUCHSCREEN_USB_ELO=y CONFIG_TOUCHSCREEN_USB_E2I=y CONFIG_TOUCHSCREEN_USB_ZYTRONIC=y CONFIG_TOUCHSCREEN_USB_ETT_TC45USB=y CONFIG_TOUCHSCREEN_USB_NEXIO=y CONFIG_TOUCHSCREEN_USB_EASYTOUCH=y CONFIG_I2C_TINY_USB=m CONFIG_MFD_RTSX_USB=m CONFIG_IR_MCEUSB=m CONFIG_IR_IGORPLUGUSB=m CONFIG_IR_TTUSBIR=m CONFIG_MEDIA_USB_SUPPORT=y CONFIG_USB_VIDEO_CLASS=m CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y CONFIG_USB_GSPCA=m CONFIG_USB_M5602=m CONFIG_USB_STV06XX=m CONFIG_USB_GL860=m CONFIG_USB_GSPCA_BENQ=m CONFIG_USB_GSPCA_CONEX=m CONFIG_USB_GSPCA_CPIA1=m CONFIG_USB_GSPCA_DTCS033=m CONFIG_USB_GSPCA_ETOMS=m CONFIG_USB_GSPCA_FINEPIX=m CONFIG_USB_GSPCA_JEILINJ=m CONFIG_USB_GSPCA_JL2005BCD=m CONFIG_USB_GSPCA_KINECT=m CONFIG_USB_GSPCA_KONICA=m CONFIG_USB_GSPCA_MARS=m CONFIG_USB_GSPCA_MR97310A=m CONFIG_USB_GSPCA_NW80X=m CONFIG_USB_GSPCA_OV519=m CONFIG_USB_GSPCA_OV534=m CONFIG_USB_GSPCA_OV534_9=m CONFIG_USB_GSPCA_PAC207=m CONFIG_USB_GSPCA_PAC7302=m CONFIG_USB_GSPCA_PAC7311=m CONFIG_USB_GSPCA_SE401=m CONFIG_USB_GSPCA_SN9C2028=m CONFIG_USB_GSPCA_SN9C20X=m CONFIG_USB_GSPCA_SONIXB=m CONFIG_USB_GSPCA_SONIXJ=m CONFIG_USB_GSPCA_SPCA500=m CONFIG_USB_GSPCA_SPCA501=m CONFIG_USB_GSPCA_SPCA505=m CONFIG_USB_GSPCA_SPCA506=m CONFIG_USB_GSPCA_SPCA508=m CONFIG_USB_GSPCA_SPCA561=m CONFIG_USB_GSPCA_SPCA1528=m CONFIG_USB_GSPCA_SQ905=m CONFIG_USB_GSPCA_SQ905C=m CONFIG_USB_GSPCA_SQ930X=m CONFIG_USB_GSPCA_STK014=m CONFIG_USB_GSPCA_STK1135=m CONFIG_USB_GSPCA_STV0680=m CONFIG_USB_GSPCA_SUNPLUS=m CONFIG_USB_GSPCA_T613=m CONFIG_USB_GSPCA_TOPRO=m CONFIG_USB_GSPCA_TV8532=m CONFIG_USB_GSPCA_VC032X=m CONFIG_USB_GSPCA_VICAM=m CONFIG_USB_GSPCA_XIRLINK_CIT=m CONFIG_USB_GSPCA_ZC3XX=m CONFIG_USB_PWC=m CONFIG_USB_PWC_INPUT_EVDEV=y CONFIG_USB_ZR364XX=m CONFIG_USB_STKWEBCAM=m CONFIG_USB_S2255=m CONFIG_VIDEO_USBTV=m CONFIG_VIDEO_PVRUSB2=m CONFIG_VIDEO_PVRUSB2_SYSFS=y CONFIG_VIDEO_PVRUSB2_DVB=y CONFIG_VIDEO_USBVISION=m CONFIG_DVB_USB=m CONFIG_DVB_USB_A800=m CONFIG_DVB_USB_DIBUSB_MB=m CONFIG_DVB_USB_DIBUSB_MB_FAULTY=y CONFIG_DVB_USB_DIBUSB_MC=m CONFIG_DVB_USB_DIB0700=m CONFIG_DVB_USB_UMT_010=m CONFIG_DVB_USB_CXUSB=m CONFIG_DVB_USB_M920X=m CONFIG_DVB_USB_DIGITV=m CONFIG_DVB_USB_VP7045=m CONFIG_DVB_USB_VP702X=m CONFIG_DVB_USB_GP8PSK=m CONFIG_DVB_USB_NOVA_T_USB2=m CONFIG_DVB_USB_TTUSB2=m CONFIG_DVB_USB_DTT200U=m CONFIG_DVB_USB_OPERA1=m CONFIG_DVB_USB_AF9005=m CONFIG_DVB_USB_AF9005_REMOTE=m CONFIG_DVB_USB_PCTV452E=m CONFIG_DVB_USB_DW2102=m CONFIG_DVB_USB_CINERGY_T2=m CONFIG_DVB_USB_DTV5100=m CONFIG_DVB_USB_FRIIO=m CONFIG_DVB_USB_AZ6027=m CONFIG_DVB_USB_TECHNISAT_USB2=m CONFIG_DVB_USB_V2=m CONFIG_DVB_USB_AF9015=m CONFIG_DVB_USB_AF9035=m CONFIG_DVB_USB_ANYSEE=m CONFIG_DVB_USB_AU6610=m CONFIG_DVB_USB_AZ6007=m CONFIG_DVB_USB_CE6230=m CONFIG_DVB_USB_EC168=m CONFIG_DVB_USB_GL861=m CONFIG_DVB_USB_LME2510=m CONFIG_DVB_USB_MXL111SF=m CONFIG_DVB_USB_RTL28XXU=m CONFIG_DVB_USB_DVBSKY=m CONFIG_SMS_USB_DRV=m CONFIG_DVB_B2C2_FLEXCOP_USB=m CONFIG_USB_AIRSPY=m CONFIG_USB_HACKRF=m CONFIG_USB_MSI2500=m CONFIG_USB_SI470X=m CONFIG_USB_MR800=m CONFIG_USB_KEENE=m CONFIG_USB_RAREMONO=m CONFIG_USB_MA901=m CONFIG_SND_USB=y CONFIG_SND_USB_AUDIO=m CONFIG_SND_USB_UA101=m CONFIG_SND_USB_CAIAQ=m CONFIG_SND_USB_CAIAQ_INPUT=y CONFIG_SND_USB_6FIRE=m CONFIG_SND_USB_HIFACE=m CONFIG_SND_USB_LINE6=m CONFIG_SND_USB_POD=m CONFIG_SND_USB_PODHD=m CONFIG_SND_USB_TONEPORT=m CONFIG_SND_USB_VARIAX=m CONFIG_USB_HID=y CONFIG_USB_HIDDEV=y CONFIG_USB_OHCI_LITTLE_ENDIAN=y CONFIG_USB_SUPPORT=y CONFIG_USB_COMMON=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB=y CONFIG_USB_ANNOUNCE_NEW_DEVICES=y CONFIG_USB_DEFAULT_PERSIST=y CONFIG_USB_DYNAMIC_MINORS=y CONFIG_USB_MON=y CONFIG_USB_WUSB_CBAF=m CONFIG_USB_XHCI_HCD=m CONFIG_USB_XHCI_PLATFORM=m CONFIG_USB_EHCI_HCD=m CONFIG_USB_EHCI_ROOT_HUB_TT=y CONFIG_USB_EHCI_TT_NEWSCHED=y CONFIG_USB_EHCI_EXYNOS=m CONFIG_USB_EHCI_HCD_PLATFORM=m CONFIG_USB_OHCI_HCD=m CONFIG_USB_OHCI_EXYNOS=m CONFIG_USB_OHCI_HCD_PLATFORM=m CONFIG_USB_ACM=m CONFIG_USB_PRINTER=m CONFIG_USB_WDM=m CONFIG_USB_TMC=m CONFIG_USB_STORAGE=y CONFIG_USB_STORAGE_REALTEK=m CONFIG_USB_STORAGE_DATAFAB=m CONFIG_USB_STORAGE_FREECOM=m CONFIG_USB_STORAGE_ISD200=m CONFIG_USB_STORAGE_USBAT=m CONFIG_USB_STORAGE_SDDR09=m CONFIG_USB_STORAGE_SDDR55=m CONFIG_USB_STORAGE_JUMPSHOT=m CONFIG_USB_STORAGE_ALAUDA=m CONFIG_USB_STORAGE_ONETOUCH=m CONFIG_USB_STORAGE_KARMA=m CONFIG_USB_STORAGE_CYPRESS_ATACB=m CONFIG_USB_STORAGE_ENE_UB6250=m CONFIG_USB_UAS=m CONFIG_USB_MDC800=m CONFIG_USB_MICROTEK=m CONFIG_USB_DWC3=m CONFIG_USB_DWC3_HOST=y CONFIG_USB_DWC3_EXYNOS=m CONFIG_USB_DWC3_OF_SIMPLE=m CONFIG_USB_DWC2=m CONFIG_USB_DWC2_HOST=y CONFIG_USB_CHIPIDEA=m CONFIG_USB_CHIPIDEA_OF=m CONFIG_USB_CHIPIDEA_UDC=y CONFIG_USB_SERIAL=m CONFIG_USB_SERIAL_GENERIC=y CONFIG_USB_SERIAL_SIMPLE=m CONFIG_USB_SERIAL_AIRCABLE=m CONFIG_USB_SERIAL_ARK3116=m CONFIG_USB_SERIAL_BELKIN=m CONFIG_USB_SERIAL_CH341=m CONFIG_USB_SERIAL_WHITEHEAT=m CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m CONFIG_USB_SERIAL_CP210X=m CONFIG_USB_SERIAL_CYPRESS_M8=m CONFIG_USB_SERIAL_EMPEG=m CONFIG_USB_SERIAL_FTDI_SIO=m CONFIG_USB_SERIAL_VISOR=m CONFIG_USB_SERIAL_IPAQ=m CONFIG_USB_SERIAL_IR=m CONFIG_USB_SERIAL_EDGEPORT=m CONFIG_USB_SERIAL_EDGEPORT_TI=m CONFIG_USB_SERIAL_F81232=m CONFIG_USB_SERIAL_GARMIN=m CONFIG_USB_SERIAL_IPW=m CONFIG_USB_SERIAL_IUU=m CONFIG_USB_SERIAL_KEYSPAN_PDA=m CONFIG_USB_SERIAL_KEYSPAN=m CONFIG_USB_SERIAL_KLSI=m CONFIG_USB_SERIAL_KOBIL_SCT=m CONFIG_USB_SERIAL_MCT_U232=m CONFIG_USB_SERIAL_METRO=m CONFIG_USB_SERIAL_MOS7720=m CONFIG_USB_SERIAL_MOS7840=m CONFIG_USB_SERIAL_MXUPORT=m CONFIG_USB_SERIAL_NAVMAN=m CONFIG_USB_SERIAL_PL2303=m CONFIG_USB_SERIAL_OTI6858=m CONFIG_USB_SERIAL_QCAUX=m CONFIG_USB_SERIAL_QUALCOMM=m CONFIG_USB_SERIAL_SPCP8X5=m CONFIG_USB_SERIAL_SAFE=m CONFIG_USB_SERIAL_SIERRAWIRELESS=m CONFIG_USB_SERIAL_SYMBOL=m CONFIG_USB_SERIAL_TI=m CONFIG_USB_SERIAL_CYBERJACK=m CONFIG_USB_SERIAL_XIRCOM=m CONFIG_USB_SERIAL_WWAN=m CONFIG_USB_SERIAL_OPTION=m CONFIG_USB_SERIAL_OMNINET=m CONFIG_USB_SERIAL_OPTICON=m CONFIG_USB_SERIAL_XSENS_MT=m CONFIG_USB_SERIAL_WISHBONE=m CONFIG_USB_SERIAL_SSU100=m CONFIG_USB_SERIAL_QT2=m CONFIG_USB_SERIAL_DEBUG=m CONFIG_USB_EMI62=m CONFIG_USB_EMI26=m CONFIG_USB_ADUTUX=m CONFIG_USB_SEVSEG=m CONFIG_USB_RIO500=m CONFIG_USB_LEGOTOWER=m CONFIG_USB_LCD=m CONFIG_USB_LED=m CONFIG_USB_CYPRESS_CY7C63=m CONFIG_USB_CYTHERM=m CONFIG_USB_IDMOUSE=m CONFIG_USB_FTDI_ELAN=m CONFIG_USB_APPLEDISPLAY=m CONFIG_USB_LD=m CONFIG_USB_TRANCEVIBRATOR=m CONFIG_USB_IOWARRIOR=m CONFIG_USB_TEST=m CONFIG_USB_EHSET_TEST_FIXTURE=m CONFIG_USB_ISIGHTFW=m CONFIG_USB_YUREX=m CONFIG_USB_EZUSB_FX2=m CONFIG_USB_HSIC_USB3503=m CONFIG_USB_PHY=y CONFIG_NOP_USB_XCEIV=y CONFIG_AM335X_CONTROL_USB=m CONFIG_AM335X_PHY_USB=m CONFIG_USB_GPIO_VBUS=m CONFIG_USB_ULPI=y CONFIG_USB_ULPI_VIEWPORT=y CONFIG_USB_GADGET=y CONFIG_USB_LIBCOMPOSITE=m CONFIG_USB_F_ACM=m CONFIG_USB_U_SERIAL=m CONFIG_USB_U_ETHER=m CONFIG_USB_F_OBEX=m CONFIG_USB_F_ECM=m CONFIG_USB_F_PHONET=m CONFIG_USB_F_SUBSET=m CONFIG_USB_F_RNDIS=m CONFIG_USB_F_MASS_STORAGE=m CONFIG_USB_ETH=m CONFIG_USB_ETH_RNDIS=y CONFIG_USB_GADGETFS=m CONFIG_USB_G_NOKIA=m CONFIG_USB_LED_TRIG=y CONFIG_MMC_REALTEK_USB=m CONFIG_MEMSTICK_REALTEK_USB=m CONFIG_PHY_SAMSUNG_USB2=m CONFIG_PHY_EXYNOS5250_USB2=y CONFIG_PHY_EXYNOS5_USBDRD=m [5.] Most recent kernel version which did not have the bug: I did not test any other versions. [6.] Output of Oops: - [7.] A small shell script or example program which triggers the problem (if possible) - [8.] Environment [8.1.] Software (add the output of the ver_linux script here) Linux c0xu4 4.7.2+ #1 SMP Sun Aug 28 18:52:25 CEST 2016 armv7l GNU/Linux GNU C 4.9.2 GNU Make 4.0 Binutils 2.25 Util-linux 2.25.2 Mount 2.25.2 Module-init-tools 18 E2fsprogs 1.42.12 Linux C Library 2.19 Dynamic linker (ldd) 2.19 Linux C++ Library 6.0.20 Procps 3.3.9 Net-tools 1.60 Kbd 1.15.5 Console-tools 1.15.5 Sh-utils 8.23 Udev 215 Modules Loaded autofs4 cdc_ether dwc3 dwc3_exynos ehci_exynos ehci_hcd evdev hid_generic ip6table_filter ip6_tables iptable_filter iptable_mangle iptable_nat ip_tables ipt_REJECT mii nf_conntrack nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat nf_nat_ipv4 nf_reject_ipv4 ohci_exynos ohci_hcd phy_exynos5_usbdrd phy_exynos_usb2 r8152 s5p_sss snd snd_hwdep snd_pcm snd_rawmidi snd_seq_device snd_timer snd_usb_audio snd_usbmidi_lib soundcore tun usbnet xhci_hcd xhci_plat_hcd x_tables xt_conntrack xt_multiport xt_tcpudp [8.2.] Processor information (from /proc/cpuinfo): processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 78 model name : Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz stepping : 3 microcode : 0x8a cpu MHz : 2739.111 cache size : 3072 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp bugs : bogomips : 4801.87 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 78 model name : Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz stepping : 3 microcode : 0x8a cpu MHz : 2618.701 cache size : 3072 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp bugs : bogomips : 4802.09 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 78 model name : Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz stepping : 3 microcode : 0x8a cpu MHz : 2765.917 cache size : 3072 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp bugs : bogomips : 4803.65 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 78 model name : Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz stepping : 3 microcode : 0x8a cpu MHz : 2757.421 cache size : 3072 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 3 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp bugs : bogomips : 4803.17 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: [8.3.] Module information (from /proc/modules): mmc_block 40960 0 - Live 0xffffffffc0cb3000 xfrm_user 32768 1 - Live 0xffffffffc0caa000 xfrm_algo 16384 1 xfrm_user, Live 0xffffffffc0c5c000 xt_addrtype 16384 2 - Live 0xffffffffc0c46000 br_netfilter 24576 0 - Live 0xffffffffc0c7a000 fuse 98304 2 - Live 0xffffffffc0c91000 dm_thin_pool 61440 1 - Live 0xffffffffc0c81000 dm_persistent_data 57344 1 dm_thin_pool, Live 0xffffffffc0c6b000 dm_bio_prison 16384 1 dm_thin_pool, Live 0xffffffffc0c62000 dm_bufio 24576 1 dm_persistent_data, Live 0xffffffffc0c55000 libcrc32c 16384 1 dm_persistent_data, Live 0xffffffffc0c50000 crc32c_generic 16384 0 - Live 0xffffffffc0c4b000 loop 28672 4 - Live 0xffffffffc0c3e000 xt_CHECKSUM 16384 1 - Live 0xffffffffc0bf3000 iptable_mangle 16384 1 - Live 0xffffffffc0c39000 ipt_MASQUERADE 16384 4 - Live 0xffffffffc0c34000 nf_nat_masquerade_ipv4 16384 1 ipt_MASQUERADE, Live 0xffffffffc0c2f000 iptable_nat 16384 1 - Live 0xffffffffc0c2a000 nf_nat_ipv4 16384 1 iptable_nat, Live 0xffffffffc07ef000 nf_nat 24576 2 nf_nat_masquerade_ipv4,nf_nat_ipv4, Live 0xffffffffc0bec000 ipt_REJECT 16384 2 - Live 0xffffffffc07e1000 nf_reject_ipv4 16384 1 ipt_REJECT, Live 0xffffffffc07dc000 xt_tcpudp 16384 6 - Live 0xffffffffc0be7000 tun 28672 1 - Live 0xffffffffc07e7000 bridge 122880 1 br_netfilter, Live 0xffffffffc0c0b000 stp 16384 1 bridge, Live 0xffffffffc07d7000 llc 16384 2 bridge,stp, Live 0xffffffffc07ce000 ebtable_filter 16384 0 - Live 0xffffffffc07c9000 ebtables 32768 1 ebtable_filter, Live 0xffffffffc07bc000 ip6_tables 28672 0 - Live 0xffffffffc09cf000 snd_hda_codec_hdmi 45056 1 - Live 0xffffffffc0aee000 snd_hda_codec_realtek 69632 1 - Live 0xffffffffc0bf9000 snd_hda_codec_generic 69632 1 snd_hda_codec_realtek, Live 0xffffffffc0ba7000 nf_conntrack_ipv4 16384 4 - Live 0xffffffffc09a1000 nf_defrag_ipv4 16384 1 nf_conntrack_ipv4, Live 0xffffffffc091f000 xt_conntrack 16384 3 - Live 0xffffffffc062f000 nf_conntrack 90112 5 nf_nat_masquerade_ipv4,nf_nat_ipv4,nf_nat,nf_conntrack_ipv4,xt_conntrac k, Live 0xffffffffc0bd0000 iptable_filter 16384 1 - Live 0xffffffffc04cb000 rc_su3000 16384 0 - Live 0xffffffffc0bcb000 snd_soc_skl 57344 0 - Live 0xffffffffc0bbc000 snd_soc_skl_ipc 32768 1 snd_soc_skl, Live 0xffffffffc097c000 snd_soc_sst_ipc 16384 1 snd_soc_skl_ipc, Live 0xffffffffc0977000 snd_soc_sst_dsp 36864 1 snd_soc_skl_ipc, Live 0xffffffffc09a6000 snd_hda_ext_core 20480 1 snd_soc_skl, Live 0xffffffffc093b000 snd_soc_sst_match 16384 1 snd_soc_skl, Live 0xffffffffc0936000 snd_soc_core 180224 1 snd_soc_skl, Live 0xffffffffc0b7a000 snd_compress 20480 1 snd_soc_core, Live 0xffffffffc0919000 snd_pcm_dmaengine 16384 1 snd_soc_core, Live 0xffffffffc0665000 ac97_bus 16384 1 snd_soc_core, Live 0xffffffffc0660000 dw_dmac_core 24576 1 snd_soc_sst_dsp, Live 0xffffffffc0540000 ts2020 20480 1 - Live 0xffffffffc04f3000 ds3000 20480 1 - Live 0xffffffffc0514000 nls_iso8859_1 16384 1 - Live 0xffffffffc04e9000 nls_cp437 20480 1 - Live 0xffffffffc0508000 vfat 20480 1 - Live 0xffffffffc0502000 fat 65536 1 vfat, Live 0xffffffffc08c9000 arc4 16384 2 - Live 0xffffffffc055b000 iTCO_wdt 16384 0 - Live 0xffffffffc0529000 intel_rapl 20480 0 - Live 0xffffffffc04d2000 iTCO_vendor_support 16384 1 iTCO_wdt, Live 0xffffffffc067a000 x86_pkg_temp_thermal 16384 0 - Live 0xffffffffc04ee000 intel_powerclamp 16384 0 - Live 0xffffffffc050f000 coretemp 16384 0 - Live 0xffffffffc02f4000 mousedev 20480 0 - Live 0xffffffffc04bb000 kvm_intel 184320 0 - Live 0xffffffffc0a7c000 kvm 507904 1 kvm_intel, Live 0xffffffffc0afd000 irqbypass 16384 1 kvm, Live 0xffffffffc063e000 iwlmvm 266240 0 - Live 0xffffffffc0aac000 mac80211 659456 1 iwlmvm, Live 0xffffffffc09da000 pcspkr 16384 0 - Live 0xffffffffc062a000 snd_hda_intel 32768 2 - Live 0xffffffffc05c1000 psmouse 118784 0 - Live 0xffffffffc09b1000 serio_raw 16384 0 - Live 0xffffffffc059c000 snd_hda_codec 106496 4 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_ intel, Live 0xffffffffc0986000 e1000e 217088 0 - Live 0xffffffffc0941000 snd_hda_core 65536 7 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_codec_generic,snd_soc_ skl,snd_hda_ext_core,snd_hda_intel,snd_hda_codec, Live 0xffffffffc0925000 snd_hwdep 16384 1 snd_hda_codec, Live 0xffffffffc053b000 snd_pcm 86016 8 snd_hda_codec_hdmi,snd_soc_skl,snd_hda_ext_core,snd_soc_core,snd_pcm_dm aengine,snd_hda_intel,snd_hda_codec,snd_hda_core, Live 0xffffffffc0903000 ptp 20480 1 e1000e, Live 0xffffffffc0531000 snd_timer 28672 1 snd_pcm, Live 0xffffffffc04c3000 pps_core 20480 1 ptp, Live 0xffffffffc08fd000 i2c_i801 20480 0 - Live 0xffffffffc08f7000 hid_generic 16384 0 - Live 0xffffffffc08f2000 joydev 20480 0 - Live 0xffffffffc08e8000 evdev 24576 16 - Live 0xffffffffc08dd000 input_leds 16384 0 - Live 0xffffffffc0684000 mac_hid 16384 0 - Live 0xffffffffc067f000 dvb_usb_dw2102 65536 0 - Live 0xffffffffc0888000 dvb_usb 24576 1 dvb_usb_dw2102, Live 0xffffffffc066a000 dvb_core 106496 2 dvb_usb_dw2102,dvb_usb, Live 0xffffffffc086d000 rc_core 24576 4 rc_su3000,dvb_usb_dw2102,dvb_usb, Live 0xffffffffc0623000 iwlwifi 184320 1 iwlmvm, Live 0xffffffffc089b000 cfg80211 491520 3 iwlmvm,mac80211,iwlwifi, Live 0xffffffffc07f4000 rtsx_pci_ms 20480 0 - Live 0xffffffffc061d000 i915 1236992 15 - Live 0xffffffffc068d000 memstick 16384 1 rtsx_pci_ms, Live 0xffffffffc0614000 shpchp 32768 0 - Live 0xffffffffc0671000 drm_kms_helper 114688 1 i915, Live 0xffffffffc0643000 mei_me 32768 0 - Live 0xffffffffc0635000 drm 294912 9 i915,drm_kms_helper, Live 0xffffffffc05cb000 mei 81920 1 mei_me, Live 0xffffffffc05ac000 intel_pch_thermal 16384 0 - Live 0xffffffffc05a7000 intel_gtt 20480 1 i915, Live 0xffffffffc05a1000 syscopyarea 16384 1 drm_kms_helper, Live 0xffffffffc04e4000 sysfillrect 16384 1 drm_kms_helper, Live 0xffffffffc0560000 sysimgblt 16384 1 drm_kms_helper, Live 0xffffffffc0520000 fb_sys_fops 16384 1 drm_kms_helper, Live 0xffffffffc04df000 i2c_algo_bit 16384 1 i915, Live 0xffffffffc051b000 thermal 20480 0 - Live 0xffffffffc0596000 thinkpad_acpi 77824 1 - Live 0xffffffffc057e000 wmi 16384 0 - Live 0xffffffffc04fd000 nvram 16384 1 thinkpad_acpi, Live 0xffffffffc048b000 snd 65536 15 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_codec_generic,snd_soc_ core,snd_compress,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_tim er,thinkpad_acpi, Live 0xffffffffc056d000 soundcore 16384 1 snd, Live 0xffffffffc04b6000 led_class 16384 3 iwlmvm,input_leds,thinkpad_acpi, Live 0xffffffffc04ad000 rfkill 20480 3 cfg80211,thinkpad_acpi, Live 0xffffffffc04d9000 ac 16384 0 - Live 0xffffffffc0565000 video 36864 2 i915,thinkpad_acpi, Live 0xffffffffc0551000 battery 20480 0 - Live 0xffffffffc054b000 tpm_tis 20480 0 - Live 0xffffffffc0499000 fjes 28672 0 - Live 0xffffffffc0491000 button 16384 1 i915, Live 0xffffffffc02cf000 tpm 36864 1 tpm_tis, Live 0xffffffffc0481000 sch_fq_codel 20480 3 - Live 0xffffffffc04a7000 vboxnetflt 28672 0 - Live 0xffffffffc049f000 (O) vboxnetadp 28672 0 - Live 0xffffffffc0398000 (O) pci_stub 16384 1 - Live 0xffffffffc026e000 vboxpci 24576 0 - Live 0xffffffffc02de000 (O) vboxdrv 385024 3 vboxnetflt,vboxnetadp,vboxpci, Live 0xffffffffc0422000 (O) ip_tables 24576 3 iptable_mangle,iptable_nat,iptable_filter, Live 0xffffffffc0323000 x_tables 28672 11 xt_addrtype,xt_CHECKSUM,iptable_mangle,ipt_MASQUERADE,ipt_REJECT,xt_tcp udp,ebtables,ip6_tables,xt_conntrack,iptable_filter,ip_tables, Live 0xffffffffc0313000 ext4 516096 1 - Live 0xffffffffc03a3000 crc16 16384 1 ext4, Live 0xffffffffc023a000 jbd2 90112 1 ext4, Live 0xffffffffc02b0000 mbcache 16384 2 ext4, Live 0xffffffffc0269000 algif_skcipher 20480 0 - Live 0xffffffffc021f000 af_alg 16384 1 algif_skcipher, Live 0xffffffffc0198000 usbhid 45056 0 - Live 0xffffffffc038c000 dm_crypt 28672 1 - Live 0xffffffffc01a4000 dm_mod 102400 12 dm_thin_pool,dm_persistent_data,dm_bufio,dm_crypt, Live 0xffffffffc0372000 sd_mod 36864 3 - Live 0xffffffffc01e5000 rtsx_pci_sdmmc 24576 0 - Live 0xffffffffc01de000 mmc_core 118784 2 mmc_block,rtsx_pci_sdmmc, Live 0xffffffffc0354000 atkbd 24576 0 - Live 0xffffffffc019d000 libps2 16384 2 psmouse,atkbd, Live 0xffffffffc02ef000 crct10dif_pclmul 16384 0 - Live 0xffffffffc0303000 crc32_pclmul 16384 0 - Live 0xffffffffc0226000 crc32c_intel 24576 1 - Live 0xffffffffc031c000 ghash_clmulni_intel 16384 0 - Live 0xffffffffc021a000 aesni_intel 167936 3 - Live 0xffffffffc032a000 aes_x86_64 20480 1 aesni_intel, Live 0xffffffffc030d000 lrw 16384 1 aesni_intel, Live 0xffffffffc02fe000 gf128mul 16384 1 lrw, Live 0xffffffffc0308000 glue_helper 16384 1 aesni_intel, Live 0xffffffffc02f9000 ablk_helper 16384 1 aesni_intel, Live 0xffffffffc0193000 cryptd 20480 4 ghash_clmulni_intel,aesni_intel,ablk_helper, Live 0xffffffffc02e5000 ahci 36864 2 - Live 0xffffffffc02d4000 libahci 28672 1 ahci, Live 0xffffffffc02c7000 libata 204800 2 ahci,libahci, Live 0xffffffffc027d000 xhci_pci 16384 0 - Live 0xffffffffc0274000 xhci_hcd 159744 1 xhci_pci, Live 0xffffffffc0241000 rtsx_pci 45056 2 rtsx_pci_ms,rtsx_pci_sdmmc, Live 0xffffffffc022e000 scsi_mod 155648 2 sd_mod,libata, Live 0xffffffffc01f3000 usbcore 200704 5 dvb_usb_dw2102,dvb_usb,usbhid,xhci_pci,xhci_hcd, Live 0xffffffffc01ac000 usb_common 16384 1 usbcore, Live 0xffffffffc018e000 i8042 24576 1 libps2, Live 0xffffffffc017c000 serio 20480 7 psmouse,serio_raw,atkbd,i8042, Live 0xffffffffc0188000 hid_cherry 16384 0 - Live 0xffffffffc0183000 hid 114688 3 hid_generic,usbhid,hid_cherry, Live 0xffffffffc015f000 jitterentropy_rng 16384 0 - Live 0xffffffffc015a000 sha256_ssse3 32768 1 - Live 0xffffffffc0151000 sha256_generic 20480 1 sha256_ssse3, Live 0xffffffffc0148000 hmac 16384 1 - Live 0xffffffffc0140000 drbg 32768 1 - Live 0xffffffffc0133000 ansi_cprng 16384 0 - Live 0xffffffffc012b000 [8.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem) #ioports empty #iomem 02020000-02073fff : 2020000.sysram: 03810000-0381000b : /audss-clock-controller@3810000 03860000-03860fff : /pinctrl@03860000 03880000-03880fff : /amba/adma@03880000 03880000-03880fff : /amba/adma@03880000 10040000-10044fff : /system-controller@10040000 101e0000-101e00ff : /rtc@101E0000 10800000-10800fff : /amba/mdma@10800000 10800000-10800fff : /amba/mdma@10800000 10830000-108302ff : /sss@10830000 10a60000-10a60fff : /sysmmu@0x10A60000 10a70000-10a70fff : /sysmmu@0x10A70000 10ca1000-10ca11ff : /nocp@10CA1000 10ca1400-10ca15ff : /nocp@10CA1400 10ca1800-10ca19ff : /nocp@10CA1800 10ca1c00-10ca1dff : /nocp@10CA1C00 11200000-11200fff : /sysmmu@0x11200000 11210000-11210fff : /sysmmu@0x11210000 11c00000-11c00063 : /rotator@11C00000 11d40000-11d40fff : /sysmmu@0x11D40000 11f10000-11f10fff : /sysmmu@0x11F10000 11f20000-11f20fff : /sysmmu@0x11F20000 12000000-12007fff : /usb3-0/dwc3@12000000 12000000-12007fff : /usb3-0/dwc3@12000000 1200c100-1200ffff : /usb3-0/dwc3@12000000 12100000-121000ff : /phy@12100000 12110000-121100ff : /usb@12110000 12120000-121200ff : /usb@12120000 12130000-121300ff : /phy@12130000 121a0000-121a0fff : /amba/pdma@121A0000 121a0000-121a0fff : /amba/pdma@121A0000 121b0000-121b0fff : /amba/pdma@121B0000 121b0000-121b0fff : /amba/pdma@121B0000 12200000-12201fff : /mmc@12200000 12220000-12220fff : /mmc@12220000 12400000-12407fff : /usb3-1/dwc3@12400000 12400000-12407fff : /usb3-1/dwc3@12400000 1240c100-1240ffff : /usb3-1/dwc3@12400000 12500000-125000ff : /phy@12500000 12880000-12880fff : /sysmmu@0x12880000 12890000-12890fff : /sysmmu@0x12890000 128a0000-128a0fff : /sysmmu@0x128A0000 128c0000-128c0fff : /sysmmu@0x128C0000 128d0000-128d0fff : /sysmmu@0x128D0000 128e0000-128e0fff : /sysmmu@0x128E0000 12c00000-12c000ff : 12c00000.serial: 12c10000-12c100ff : 12c10000.serial: 12c20000-12c200ff : 12c20000.serial: 12c30000-12c300ff : 12c30000.serial: 12ca0000-12ca0fff : /i2c@12CA0000 12dd0000-12dd00ff : /pwm@12dd0000 13400000-13400fff : /pinctrl@13400000 13410000-13410fff : /pinctrl@13410000 13e00000-13e00fff : /video-scaler@13e00000 13e10000-13e10fff : /video-scaler@13e10000 13e80000-13e80fff : /sysmmu@0x13E80000 13e90000-13e90fff : /sysmmu@0x13E90000 14000000-14000fff : /pinctrl@14000000 14010000-14010fff : /pinctrl@14010000 14640000-14640fff : /sysmmu@0x14640000 14650000-14650fff : /sysmmu@0x14650000 14680000-14680fff : /sysmmu@0x14680000 40000000-42ffffff : System RAM 40008000-40ae61bb : Kernel code 40c00000-40cf10c3 : Kernel data 43800000-50ffffff : System RAM 51800000-be9fffff : System RAM [8.5.] PCI information ('lspci -vvv' as root) [8.6.] SCSI information (from /proc/scsi/scsi) [8.7.] Other information that might be relevant to the problem (please look in /proc and include all information that you think to be relevant): [9.] Other notes, patches, fixes, workarounds: [9.1] https://lkml.org/lkml/2014/4/28/234 [9.2] https://lkml.org/lkml/2015/2/2/259 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html