Bug#568555: xserver-xorg: DPMS "off" doesn't stick

[Michel Dänzer <daenzer@debian.org>]

On Don, 2011-08-18 at 20:17 +0200, Stephen Kitt wrote: 
> 
> On Thu, Aug 18, 2011 at 10:07:21AM +0200, Michel Dänzer wrote:
> > On Don, 2011-08-18 at 08:37 +0200, Stephen Kitt wrote: 
> > > I'm experiencing the same symptoms as the original submitter. I've
> > > tried watching all the input devices (using evtest) while executing
> > > "xset dpms force off", but the display always comes back without there
> > > being any input event registered.
> > 
> > Are you running it like
> > 
> > sleep 1; xset dpms force off
> > 
> > ? Otherwise, one common issue is that xset runs when the enter key goes
> > down, and then the key up event immediately disables DPMS again.
> 
> I am indeed, at least in effect:
> for dev in /dev/input/event*; do (sudo xterm -e "evtest $dev" &); done; read; sleep 2; xset dpms force off

You may want to try a current drm-fixes kernel, e.g.

http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=73104b5cfe3067d68f2c2de3f3d4d4964c55873e

looks possibly relevant.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer