Re: [gentoo-user] Intermittent USB device failures

[Volker Armin Hemmann]

Am 14.08.2014 um 03:52 schrieb Mike Edenfield:
> I've recently taken an old Windows XP system and rebuilt it to run Gentoo.
> Since then, I've been having issues using any type of USB input device
> (which is particularly bad, since it has no PS/2 input ports).
>
> After some indeterminate period of time, the input device simply stops
> responding. Typically, I can use the console for a few days at a time before
> the keyboard dies, but if I load up a GUI and start using the mouse it takes
> less than a few hours. I'm fairly sure this problem is USB-related, since I
> believe I've eliminated everything downstream of that: I've tried using both
> evdev and legacy mouse and keyboard drivers in both the kernel and X and all
> of them work the same way. evtest shows no activity from the device once it
> breaks, nor do the legacy /dev driver files.
>
> Most notably, removing and re-plugging the device doesn't register as a
> device attachment. If, for example, I take a working USB mouse and swap USB
> ports, I get this:
>
> [ 1219.418050] usb 2-8: USB disconnect, device number 3
> [ 1225.258011] usb 2-7: new low-speed USB device number 4 using ohci-pci
> [ 1225.449627] usb 2-7: New USB device found, idVendor=046d, idProduct=c044
> [ 1225.449946] usb 2-7: New USB device strings: Mfr=1, Product=2,
> SerialNumber=0
> [ 1225.450240] usb 2-7: Product: USB-PS/2 Optical Mouse
> [ 1225.450740] usb 2-7: Manufacturer: Logitech
> [ 1225.464165] input: Logitech USB-PS/2 Optical Mouse as
> /devices/pci0000:00/0000:00:0b.0/usb2/2-7/2-7:1.0/input/input6
> [ 1225.464666] hid-generic 0003:046D:C044.0003: input,hidraw1: USB HID v1.10
> Mouse [Logitech USB-PS/2 Optical Mouse] on usb-0000:00:0b.0-7/input0
>
> If I do the same thing after the device has stopped functioning, I get the
> disconnect message but that's it:
>
> [199729.451060] i2c i2c-3: sendbytes: NAK bailout.
> [199733.215303] usb 2-7: USB disconnect, device number 4
> [199814.495204] type=1006 audit(1394381639.494:3): pid=5861 uid=0 old
> auid=4294967295 new auid=1000 old ses=4294967295 new ses=2 res=1
>
> (the i2c errors, I believe, are unrelated; they seem to be caused by the
> nouveau driver I'm using).
>
> I've gone through at least 6 different kernel versions and they all exhibit
> this same behavior. At this point I'm not even sure what else I can do to
> troubleshoot this problem, so any advice would be appreciated!
>

you can use the power button + acpid to reload the usb modules (I hope
you have usb support as modules and not built into the kernel) and see
what happens next time usb acts up.