Re: [Bugme-new] [Bug 13145] New: Processor does not go below C2 if mouse (uhci) is plugged in.

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On Wed, Apr 22, 2009 at 4:51 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:

> In fact the bug report says that 2.6.27 worked okay.

Not true, didn't tested 2.6.27 - there wasn't such one in debian repos.

> However the changes to uhci-hcd between 2.6.27 and 2.6.28 are quite
> minimal.  I can't see how any of them could have had this effect.  It
> must be due to a change somewhere else in the kernel.

Could You please check 26 <-> 27? In my opinion uhci-hcd was able to
autosuspend while mouse wasn't used in 2.6.26 and it isn't able to do
autosuspend now ( C3 works ok after "rmmod uhci-hcd")
This situation is very similar to using usb memory stick non-stop,
when watching move for eg. then processor also never goes below C2.

Daniel Smoczyk
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