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SubjectRe: 2.6.25-rc7: Ugh.
Pavel Machek wrote:
> Hi!
>
>>> It is with great reluctance when I attempt moving my main "desktop"
>>> over to a new kernel version -- because the USB subsystem seems to
>>> break every single time.
>>>
>>> So today I tried 2.6.25-rc7 on it for the first time.
>>> Not good.
>>>
>>> It boots, but just a simple suspend/resume (RAM) was enough to kill it.
>>> It comes back on resume, with an X desktop again,
>>> but with no USB functionality -- no mouse.
>>>
>>> The keyboard still works, so I dropped to a console and tried:
>>>
>>> rmmod usbhid
>>> insmod usbhid
>>>
>>> And the console hung at 100% CPU on the insmod.
>>> Back to 2.6.24.3 again, for now -- I've got work to do.
>>>
>>> The specs of this machine have been posted with great regularity
>>> in the past, every new kernel revision it seems. So here we go again:
>>>
>>> Dell Inspiron 9400 notebook, Intel Core2Duo T7400, 2GB SDRAM.
>> ..
>>
>> Correction there: 3GB of RAM, not 2.
>
> 3GB of RAM can be a problem. Try iommu=soft. .. but in such case
> rmmod/insmod of usbhid would not help...
..

Booted with mem=2GB, and USB hung again on the first suspend/resume cycle.

-ml


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