linux-kernel - Re: 3.12.x looses serial mouse over hibernate + resume

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Message-ID: <529CB07C.2040609@netscape.net>
Date:	Mon, 02 Dec 2013 17:08:28 +0100
From:	Manuel Krause <manuelkrause@...scape.net>
To:	Peter Hurley <peter@...leysoftware.com>
CC:	linux-kernel@...r.kernel.org, Greg KH <gregkh@...uxfoundation.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org,
	linux-serial <linux-serial@...r.kernel.org>
Subject: Re: 3.12.x looses serial mouse over hibernate + resume

On 2013-12-01 16:43, Peter Hurley wrote:
> [ +cc Dmitry Torokhov, Greg Kroah-Hartman, linux-input,
> linux-serial ]
>
> On 11/26/2013 05:19 PM, Manuel Krause wrote:
>> Since kernel 3.12.0 I have a problem with hibernate+resume
>> not reactivating my serial mouse (trackball) with my HP notebook.
>> Kernels 3.11.0 til 9 don't show this behaviour.
>>
>> Machine:           HP Notebook with Core2Duo CPU (Penryn)
>> Distro:            openSUSE 12.3, 64bit, continuously updated
>> Desktop:           KDE 4.11.3
>> MESA & drm & Xorg: most recent ones from:
>>
>> http://download.opensuse.org/repositories/home:/pontostroy:/X11/openSUSE_12.3/x86_64/
>>
>> Current kernel:    3.12.1 vanilla from openSUSE repos, with
>>                     -ck1 and BFQ patches
>>
>> The Logitech Trackman Marble FX is a PS/2 device and connected
>> via an original Logitech
>> PS/2-COM-port adapter and manually configured via my xorg.conf.
>>
>> At first, I blamed the -ck1 patches from Con Kolivas for this
>> behaviour that I use in
>> addition  to the BFQ patches, what has showed up as not right:
>> This happens with the
>> normal vanilla kernel
>> schedulers for CPU and disk I/O, too.
>>
>> By coincidence I found a weird(!) way to reactivate the serial
>> mouse:
>> (1) call Hibernate (suspend-to-disk) from KDE desktop as normal
>> (2) resume --> the PS/2 touchpad is working, the serial
>> trackball NOT
>> (3) call suspend-to-RAM (Sleep) from KDE, serial trackball
>> still dead
>> (4) execute `setserial -a /dev/ttyS0` in a konsole window or a
>> tty* console
>> (5) ==> serial trackball is back with all configuration from
>> xorg.conf
>>
>> It's fully reproducible over multiple hibernations. This also
>> happens when calling
>> `pm-hibernate` (to-disk) and `pm-suspend` (to-RAM) and the
>> setserial from a root shell
>> in KDE or any tty*.
>>
>> Please, _always_CC_me_ -- as I'm not on the kernel mailing list.
>
> Manuel,
>
> Please attach complete dmesgs (zipped, if necessary) of a
> suspend/resume cycle
> on a vanilla 3.12.x (where resume fails) _and_ a vanilla 3.11.x
> (where resume succeeds).
>
> For the test configurations, please do not apply patches.
>
> Regards,
> Peter Hurley
>

Thank you very much for your reply!
Attached you'll find a zip file with the two edited dmesg logs of 
plain vanilla kernel runs.

I have to add, that the resumes _do_ succeed in both cases, only 
the serial mouse doesn't get activated after hibernate in 3.12.x 
automatically. Just scan for and compare the lines indicating 
"serial 00:08: disabled" or "serial 00:08: activated". In 3.12.x 
the activation doesn't happen after hibernate, but after 
suspend-to-ram (sleep). That only after STR and not before a 
setserial gets my mouse back... a miracle. ;-)

Best regards, and, please, tell me if you need more information,

Manuel Krause


Download attachment "3.12.x-looses-serial-mouse-over-hibernate.zip" of type "application/zip" (34983 bytes)