Re: usb-ohci mouse lockups on National Geode system

From: Patrik Staehli (lkml@pstaehli.ch)
Date: Tue Jan 14 2003 - 02:12:23 EST


>>We are experiencing usb mouse freezing with different 2.4.x kernels
>>(tested: 2.4.1, 2.4.17 and 2.4.20). In 2.4.20 it's actually much more
>>frequent than in the older ones.
>>The freezing lockups only happen when the ide disk is active and the
>>mouse is being moved during that time.
>
> Sounds like a bug in ohci, but it may be hard to track down.
> In the meantime, use "hdparm -u 1 /dev/hda" in your boot scripts
> as a workaround.

I tried it, but there are no noticeable improvements. This maybe
indicates that it's a general interrupt timing problem with the ohci driver?

/Patrik

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