Re: [Bugme-new] [Bug 9555] New: Suspend to RAM horks keyboard autorepeat, system bell, trackpad

[Andrew Morton <akpm@linux-foundation.org>]

(switching to email - please respond via emailed reply-to-all, not via the
bugzilla web interface)

On Wed, 12 Dec 2007 18:18:05 -0800 (PST) bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=9555
> 
>            Summary: Suspend to RAM horks keyboard autorepeat, system bell,
>                     trackpad
>            Product: Power Management
>            Version: 2.5
>      KernelVersion: 2.6.23.8
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Hibernation/Suspend
>         AssignedTo: power-management_other@kernel-bugs.osdl.org
>         ReportedBy: akkzilla@shallowsky.com
> 
> 
> Most recent kernel where this bug did not occur: 2.6.23.1
> Distribution: Ubuntu feisty
> Hardware Environment: Sony Vaio SR71
> Software Environment:
> Problem Description:
> 
> With 2.6.23.8, when I suspend to RAM (using /usr/sbin/hibernate -F
> /etc/hibernate/ram.conf) from within X, when I resume I see the following odd
> behavior:
> 
> 1. The system bell is now half a second long.
> 2. Keyboard autorepeat has a very long delay -- like 7 seconds before the first
> repeated character shows up.
> 3. If I configure X to use the (Alps) trackpad via the synaptics driver, after
> resuming, clicks from the trackpad don't work at all -- not only are taps
> ignored (which is how I've configured xorg.conf) but the physical buttons don't
> generate click events either. If I configure X to use the trackpad just as a
> PS/2 mouse, though, it still works normally after resuming.
> 
> 2.6.23.1 with the same .config (I took the .config from 23.8, copied it into
> the 23.1 directory, and ran make oldconfig) does NOT exhibit any of these
> problems -- it resumes from suspend normally and everything still works.
> 
> Steps to reproduce:
> Boot 2.6.23.8. Log in, start X, suspend, resume. Hold down the return key and
> observe no autorepeat (at least for a long time). echo ^G and hear the long
> bell. xorg.conf to test the trackpad part available upon request.
> 
> I will attach my .configs from 23.1 and 23.8. I've tried with and without
> evdev, and with and without tickless, so neither of those is to blame. I wanted
> to try turning off the synaptic driver, but it seems to be a mandatory part of
> the PS/2 mouse driver now. I'm happy to try other configuration options.
> 
> It's possible this is related to bug 7977, but that one is from 2.6.21 and is
> supposedly fixed now, and nobody there mentioned the keyboard or bell aspects.
> 

A regression in the -stable series.

IT'd be interesting to see if this has gone into 2.6.24-rc5 too.