отваливаются устройства ввода (мышь, клава) как диагностировать?

[loco2k]

Время от времени перестает работать мышь или клава (иногда через пару минут после загрузки, иногда целый день нормально)
Помогает вытащить и вставить девайс, но часто после нескольких передергиваний, перестает работать и то и другое до ребута. Через юсб хаб такая же история.

Куда смотреть? Где копать?

В логах вроде ничего необычного:
$ lsusb

Код: [Выделить]

Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 002: ID 2109:0811 
Bus 004 Device 002: ID 2109:0811 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 011: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 002 Device 004: ID 040b:2000 Weltrend Semiconductor
Bus 003 Device 003: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port Hub
момент перетыкания dmesg:

Код: [Выделить]

[ 4752.826683] input: PixArt USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0/input/input16
[ 4752.827030] hid-generic 0003:093A:2510.0008: input,hidraw0: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-0000:00:1d.0-1.5/input0
[ 4785.459737] usb 2-1.5: USB disconnect, device number 8
[ 4785.670958] usb 2-1.5: new low-speed USB device number 9 using ehci-pci
[ 4785.766752] usb 2-1.5: New USB device found, idVendor=093a, idProduct=2510
[ 4785.766758] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 4785.766761] usb 2-1.5: Product: USB Optical Mouse
[ 4785.766764] usb 2-1.5: Manufacturer: PixArt
[ 4785.769352] input: PixArt USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0/input/input17
[ 4785.769700] hid-generic 0003:093A:2510.0009: input,hidraw0: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-0000:00:1d.0-1.5/input0
[ 4838.870864] usb 2-1.5: USB disconnect, device number 9
[ 4840.092367] usb 2-1.5: new low-speed USB device number 10 using ehci-pci
[ 4840.188664] usb 2-1.5: New USB device found, idVendor=093a, idProduct=2510
[ 4840.188669] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 4840.188672] usb 2-1.5: Product: USB Optical Mouse
[ 4840.188675] usb 2-1.5: Manufacturer: PixArt
[ 4840.191179] input: PixArt USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0/input/input18
[ 4840.191371] hid-generic 0003:093A:2510.000A: input,hidraw0: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-0000:00:1d.0-1.5/input0
[ 9380.861461] usb 2-1.5: USB disconnect, device number 10
[ 9382.338900] usb 2-1.5: new low-speed USB device number 11 using ehci-pci
[ 9382.434687] usb 2-1.5: New USB device found, idVendor=093a, idProduct=2510
[ 9382.434693] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 9382.434696] usb 2-1.5: Product: USB Optical Mouse
[ 9382.434699] usb 2-1.5: Manufacturer: PixArt
[ 9382.437338] input: PixArt USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:1.0/input/input19
[ 9382.437746] hid-generic 0003:093A:2510.000B: input,hidraw0: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-0000:00:1d.0-1.5/input0
3.8.0-30-generic x64 ubuntu