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

[Manuel Krause]

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

Attachment: 3.12.x-looses-serial-mouse-over-hibernate.zip
Description: Zip archive