More information: Today I was still using it and noticed that I actually had another USB keyboard attached. (Since this is a wonky dell whose bios doesn't work with the Kinesis USB keyboard I had a generic USB keyboard plugged in also.) That keyboard was unresponsive. Very soon after attempting to use that keyboard, my Kinesis USB keyboard also stopped responding. The mouse was still responding. lsusb hangs in D, and doesn't produce any output to dmesg. dmesg has: (this is the same as the previous OOPs, I've added the surrounding USB output lines in case they help) [ 909.918507] usb 1-1.4: USB disconnect, device number 5 [ 910.118476] usb 1-1.4: new low-speed USB device number 7 using ehci-pci [ 910.218494] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input18 [ 910.218618] hid-generic 0003:1A2C:0002.0006: input: USB HID v1.10 Keyboard [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input0 [ 910.220954] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.1/input/input19 [ 910.221014] hid-generic 0003:1A2C:0002.0007: input: USB HID v1.10 Device [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input1 [ 1605.274576] usb 1-1.4: USB disconnect, device number 7 [ 1605.477007] usb 1-1.4: new low-speed USB device number 8 using ehci-pci [ 1605.577477] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input20 [ 1605.577543] hid-generic 0003:1A2C:0002.0008: input: USB HID v1.10 Keyboard [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input0 [ 1605.580125] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.1/input/input21 [ 1605.580219] hid-generic 0003:1A2C:0002.0009: input: USB HID v1.10 Device [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input1 [ 1606.299002] usb 1-1.4: USB disconnect, device number 8 [ 1606.774686] usb 1-1.4: new low-speed USB device number 9 using ehci-pci [ 1606.988696] usb 1-1.4: new low-speed USB device number 10 using ehci-pci [ 1607.088419] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input22 [ 1607.088527] hid-generic 0003:1A2C:0002.000A: input: USB HID v1.10 Keyboard [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input0 [ 1607.090950] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.1/input/input23 [ 1607.091069] hid-generic 0003:1A2C:0002.000B: input: USB HID v1.10 Device [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input1 [ 1607.579586] usb 1-1.4: USB disconnect, device number 10 [ 1607.780075] usb 1-1.4: new low-speed USB device number 11 using ehci-pci [ 1607.880753] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input24 [ 1607.880805] hid-generic 0003:1A2C:0002.000C: input: USB HID v1.10 Keyboard [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input0 [ 1607.883399] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.1/input/input25 [ 1607.883475] hid-generic 0003:1A2C:0002.000D: input: USB HID v1.10 Device [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input1 [ 4514.756902] usb 1-1.4: USB disconnect, device number 11 [ 4515.508463] usb 1-1.4: new low-speed USB device number 12 using ehci-pci [ 4515.973646] usb 1-1.4: device not accepting address 12, error -32 [ 4516.172901] usb 1-1.4: new low-speed USB device number 14 using ehci-pci [ 4516.273115] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input26 [ 4516.273241] hid-generic 0003:1A2C:0002.000E: input: USB HID v1.10 Keyboard [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input0 [ 4516.275778] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.1/input/input27 [ 4516.275842] hid-generic 0003:1A2C:0002.000F: input: USB HID v1.10 Device [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input1 [ 7660.634615] usb 1-1.4: USB disconnect, device number 14 [ 7660.913555] usb 1-1.4: new low-speed USB device number 15 using ehci-pci [ 7661.378666] usb 1-1.4: device not accepting address 15, error -32 [ 7661.577815] usb 1-1.4: new low-speed USB device number 17 using ehci-pci [ 7661.677145] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input28 [ 7661.677264] hid-generic 0003:1A2C:0002.0010: input: USB HID v1.10 Keyboard [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input0 [ 7661.679602] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.1/input/input29 [ 7661.679689] hid-generic 0003:1A2C:0002.0011: input: USB HID v1.10 Device [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input1 [ 7663.195802] usb 1-1.4: USB disconnect, device number 17 [ 7663.628916] usb 1-1.4: new low-speed USB device number 19 using ehci-pci [ 7663.728806] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input30 [ 7663.728875] hid-generic 0003:1A2C:0002.0012: input: USB HID v1.10 Keyboard [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input0 [ 7663.731570] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.1/input/input31 [ 7663.731639] hid-generic 0003:1A2C:0002.0013: input: USB HID v1.10 Device [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input1 [10956.977574] usb 3-4.3.3: USB disconnect, device number 5 [12175.414682] usb 4-4.3.3: new SuperSpeed USB device number 4 using xhci_hcd [12175.536463] usb-storage 4-4.3.3:1.0: USB Mass Storage device detected [12175.536588] scsi7 : usb-storage 4-4.3.3:1.0 [12176.547153] scsi 7:0:0:0: Direct-Access Generic- SD/MMC/MS/MSPRO 1.00 PQ: 0 ANSI: 6 [12176.547311] sd 7:0:0:0: Attached scsi generic sg3 type 0 [12176.558268] sd 7:0:0:0: [sdc] Attached SCSI removable disk [12252.512042] usb 4-4.3.3: reset SuperSpeed USB device number 4 using xhci_hcd [12252.564151] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda00 [12252.564154] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda40 [12597.534413] usb 1-1.4: USB disconnect, device number 19 [12597.818546] usb 1-1.4: new low-speed USB device number 20 using ehci-pci [12598.294564] usb 1-1.4: device not accepting address 20, error -32 [12598.493832] usb 1-1.4: new low-speed USB device number 22 using ehci-pci [12598.593899] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input32 [12598.593942] hid-generic 0003:1A2C:0002.0014: input: USB HID v1.10 Keyboard [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input0 [12598.596403] input: USB USB Keykoard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.1/input/input33 [12598.596432] hid-generic 0003:1A2C:0002.0015: input: USB HID v1.10 Device [USB USB Keykoard] on usb-0000:00:1a.0-1.4/input1 [12856.953617] usb 4-4.3.3: reset SuperSpeed USB device number 4 using xhci_hcd [12857.005436] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda00 [12857.005439] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda40 [12875.393063] usb 4-4.3.3: reset SuperSpeed USB device number 4 using xhci_hcd [12875.445122] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda00 [12875.445126] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda40 [13055.700277] usb 4-4.3.3: reset SuperSpeed USB device number 4 using xhci_hcd [13055.752311] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda00 [13055.752312] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda40 [13170.441108] usb 4-4.3.3: reset SuperSpeed USB device number 4 using xhci_hcd [13170.492828] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda00 [13170.492830] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda40 [13276.986342] usb 4-4.3.3: reset SuperSpeed USB device number 4 using xhci_hcd [13277.038189] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda00 [13277.038192] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda40 [13811.760730] usb 4-4.3.3: reset SuperSpeed USB device number 4 using xhci_hcd [13811.812939] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda00 [13811.812942] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda40 [14432.591945] usb 4-4.3.3: reset SuperSpeed USB device number 4 using xhci_hcd [14432.643759] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda00 [14432.643761] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804ebbdda40 [14500.486171] usb 4-4.3.3: Failed to set U1 timeout to 0x0,error code -71 [14500.486180] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [14500.486196] IP: [<ffffffff81486788>] usb_enable_link_state+0x38/0x350 [14500.486204] PGD 0 [14500.486206] Oops: 0000 [#1] PREEMPT SMP [14500.486211] Modules linked in: snd_pcm_oss snd_mixer_oss snd_hda_codec_hdmi snd_hda_codec_realtek nouveau cfbfillrect cfbimgblt mxm_wmi wmi fbcon cfbcopyarea bitblit i2c_algo_bit softcursor ttm font x86_pkg_temp_thermal coretemp drm_kms_helper drm snd_hda_intel fb fbdev snd_hda_codec snd_hwdep e1000e snd_pcm snd_page_alloc ptp snd_timer pps_core snd video [14500.486251] CPU: 5 PID: 5576 Comm: usb-storage Tainted: P O 3.13.4-gentoo #2 [14500.486254] Hardware name: Dell Inc. OptiPlex 7010/0KRC95, BIOS A12 01/10/2013 [14500.486256] task: ffff8804cd982d80 ti: ffff8805b410a000 task.ti: ffff8805b410a000 [14500.486259] RIP: 0010:[<ffffffff81486788>] [<ffffffff81486788>] usb_enable_link_state+0x38/0x350 [14500.486263] RSP: 0018:ffff8805b410bc08 EFLAGS: 00010246 [14500.486265] RAX: 0000000000000000 RBX: ffff8804865af000 RCX: 0000000000000000 [14500.486268] RDX: 0000000000000001 RSI: ffff8804865af001 RDI: ffff8806013f1c00 [14500.486270] RBP: 0000000000000001 R08: 0000000000000400 R09: ffffffff81a238e4 [14500.486272] R10: 0000000000000372 R11: 0000000000000371 R12: ffff8806013f1c00 [14500.486275] R13: ffff88058a552400 R14: ffff8804865af000 R15: 0000000000000000 [14500.486277] FS: 0000000000000000(0000) GS:ffff88061dd40000(0000) knlGS:0000000000000000 [14500.486280] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [14500.486282] CR2: 0000000000000010 CR3: 0000000001891000 CR4: 00000000001427e0 [14500.486284] Stack: [14500.486285] ffffffff81806269 0000000000000000 00000000ffffffb9 ffffea0018044400 [14500.486290] 0000000000000010 ffffffff81485a0c 0000000000000000 ffff8804865af000 [14500.486296] ffff8806013f1c00 0000000000000003 ffff88058a552400 ffff8804865af000 [14500.486300] Call Trace: [14500.486303] [<ffffffff81485a0c>] ? usb_set_lpm_timeout+0x12c/0x140 [14500.486306] [<ffffffff81486b28>] ? usb_enable_lpm+0x88/0xb0 [14500.486308] [<ffffffff81486c62>] ? usb_disable_lpm+0xb2/0xc0 [14500.486311] [<ffffffff81486c9e>] ? usb_unlocked_disable_lpm+0x2e/0x60 [14500.486314] [<ffffffff81489adf>] ? usb_reset_and_verify_device+0x9f/0x5f0 [14500.486317] [<ffffffff8148a0ff>] ? usb_reset_device+0xcf/0x190 [14500.486320] [<ffffffff814c59e1>] ? usb_stor_port_reset+0x61/0x70 [14500.486323] [<ffffffff814c5a82>] ? usb_stor_invoke_transport+0x92/0x4b0 [14500.486326] [<ffffffff814c6ec7>] ? usb_stor_control_thread+0x147/0x250 [14500.486329] [<ffffffff814c6d80>] ? fill_inquiry_response+0x170/0x170 [14500.486331] [<ffffffff814c6d80>] ? fill_inquiry_response+0x170/0x170 [14500.486335] [<ffffffff8109c90c>] ? kthread+0xbc/0xe0 [14500.486338] [<ffffffff810a0000>] ? SyS_nanosleep+0x70/0x70 [14500.486341] [<ffffffff8109c850>] ? __kthread_parkme+0x70/0x70 [14500.486348] [<ffffffff81680c7c>] ? ret_from_fork+0x7c/0xb0 [14500.486351] [<ffffffff8109c850>] ? __kthread_parkme+0x70/0x70 [14500.486353] Code: 89 6c 24 40 89 d5 4c 89 64 24 48 83 fd 01 49 89 fc 4c 89 6c 24 50 4c 89 74 24 58 4c 89 7c 24 60 48 8b 86 e0 02 00 00 40 0f 94 c6 <48> 8b 40 10 0f b7 50 08 0f 84 ba 00 00 00 83 fd 02 40 0f 94 c7 [14500.486401] RIP [<ffffffff81486788>] usb_enable_link_state+0x38/0x350 [14500.486413] RSP <ffff8805b410bc08> [14500.486418] CR2: 0000000000000010 [14500.493761] ---[ end trace d25575b6f3b6d968 ]--- [14500.737725] usb 4-4: USB disconnect, device number 2 [14500.737727] usb 4-4.3: USB disconnect, device number 3 [14500.737728] usb 4-4.3.3: USB disconnect, device number 4 -- 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
