linux-kernel - Re: Status of Regression/Bug 13407 adb trackpad disappears after suspend to ram?

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Date:	Mon, 28 Sep 2009 06:31:05 +0200
From:	Martin Wache <m.wache@....net>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: Status of Regression/Bug 13407 adb trackpad disappears after
 suspend to ram?

Benjamin Herrenschmidt schrieb:
> On Sun, 2009-09-27 at 20:10 +0200, Martin Wache wrote:
>> Hi,
>>
>> Rafael J. Wysocki schrieb:
>>
>>> A patch has been submitted which is reported to fix the issue:
>>>
>>> http://patchwork.kernel.org/patch/49462/
>>>
>>> Please test it as requested.
>>>
>> Thank you for the info :-)
>>
>> Unfortunately, applying the patch on top of 2.6.31 doesn't improve the 
>> situation for me, rather the opposite. Under X I get no reaction on any 
>>   keypress on the keyboard or movement on the trackpad. Even plugging in 
>> an USB mouse and keyboard didn't help, the usb port doesn't provide an 
>> power to the mouse (at least the led in the mouse doesn't light up).
>> Before X starts up the keyboard does respond, also the trackpad seems to 
>> be detected. Doing a suspend/resume cycle doesn't change the situation.
> 
> That looks like a different problem than the one I fixed. Is there an
> email thread or a bugzilla entry that describes the setup precisely, the
> symptoms, kernel logs etc... ?
> 
The USB not working was indeed a separate issue, I striped down my 
kernel config before building 2.6.31 and striped it down too much. After 
fixing the config the usb is again working.

What I don't really understand is that now after I fixed the usb kernel 
config and recompiled also the adb keyboard and trackpad are working again.
To test the original issue, I did several suspend/resume cycles and my 
trackpad is still working :-).
Without the patch the trackpad was almost never working after a 
suspend/resume cycle, so the adb trackpad issue seems to be fixed with 
your patch.
Thank you very much :-)

Bye,

Martin
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