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

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Date:	Sun, 01 Dec 2013 10:43:27 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Manuel Krause <manuelkrause@...scape.net>
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

[ +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

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