Re: [gentoo-amd64] Kernel-3.8 USB Disconnect

[Paul Hartman]

On Fri, Mar 8, 2013 at 2:27 PM, Frank Peters <frank.peters@×××××××.net> wrote:
> Hello,
>
> After compiling kernel-3.8 (plain vanilla) I begin to see lots of these
> entries in the kernel log:
>
> usb 1-1.3: USB disconnect, device number 4
> usb 1-1.3: new low-speed USB device number 5 using ehci-pci
> input: Microsoft  Microsoft Basic Optical Mouse v2.0  as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.0/input/input2
>
> These entries are repeated, with the device number increasing (+1)
> each time.
>
> The odd thing is that these USB disconnects occur only in console mode.
> My system boots up to the console and the messages appear roughly every
> 60 seconds.  But when I start X, the messages suddenly stop.  There may
> be only one or two USB disconnects over the next 12-16 hours.  The only
> difference between console mode and X is that the mouse is only active
> under X.
>
> The system remains stable, but for some reason, the USB mouse will repeatedly
> disconnect in console mode, but also rarely in X.
>
> I have searched for references to the problem but could only find a
> possible similar issue with 3.8-rc1
>
> https://lkml.org/lkml/2012/12/23/100
>
> Has anyone else seen this "USB disconnect" problem with kernel-3.8.x?
>
> It could be that my motherboard is failing (it's approx. 2 years old) but
> then why would the USB disconnects suddenly halt under X.
>
> USB is built in to the kernel; there are no USB modules loaded.
>
> Any comments on how I could investigate this further would be appreciated.

I do not know the cause of your problem, but if it's a machine you can
afford to reboot a few times, I would try doing a git bisect between
that kernel and the previous working one, and e-mailing your results
to the person whose name is on the offending commit.