Bug#689368: Mouse and keyboard freeze on Ivy Bridge platform

On Thu, Oct 04, 2012 at 11:36:06PM +0200, Sébastien Dinot wrote:

Alan Stern a écrit :

quoted

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.

In my humble opinion, this issue is not caused by a bad USB hardware
because I am encountering it with two different motherboards (MSI
Z77A-G43 and ASUS P8Z77-V LX), both with an uptodate BIOS.

May be it is caused by a bad cabling but my mouse and my keyboard worked
fine with my previous PC. They are connected to USB2 ports in both
cases. But to clear up this point, I will try new mouse and keyboard.

A last question: if it is a cable failure, why does it disappear
temporarily when I unload then reload the module? I do not have deep
experience and knowledge of hardware, may be there is a rational
explanation to it.

quoted

You could try getting a USB-2 hub and attaching your mouse and
keyboard through the hub. That might help ... or it might not.

Sorry, I do not understand the aim of this operation. Could you explain
me it?

Sometimes USB 2.0 hubs can handle more electrical noise from the host
controller, especially if they are externally powered by a wall-wort.
So introducing a USB 2.0 hub may fix the transfer errors caused by the
host.

BTW, do these Ivy Bridge systems have any (blue) USB 3.0 ports?  If so,
does your mouse and keyboard work under those ports?

Sarah Sharp


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