Re: Mouse and keyboard freeze on Ivy Bridge platform

On Thu, 4 Oct 2012, Sébastien Dinot wrote:

Hi,

Alan Stern a écrit :

quoted

Please build a kernel with CONFIG_USB_DEBUG enabled.

Done (3.6.0+ kernel)

quoted

When a hang occurs, get a list of hang tasks (Alt-SysRq-w probably
won't work, but "echo w >/proc/sysrq-trigger" from a network login
should). Then send the dmesg output

The mouse and the keyboard froze four times tonight in half an hour :

- at 20:42:05
- at 20:53:44
- at 20:58:21
- at 21:15:19

But the SysRq command (executed through a remote SSH connection)
displayed nothing. :(

No tasks were hung.  That's okay.

In attachment, you will find the kern.log file.

 
The log file shows lots and lots of low-level communication errors.  
They could be caused by bad cabling or by bad USB hardware in your
computer.  It's unlikely that they were caused by the mouse or
keyboard, because the log shows errors for both of them starting at
exactly the same times.
 
You could try getting a USB-2 hub and attaching your mouse and
keyboard through the hub.  That might help ... or it might not.

Alan Stern

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