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:

quoted

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