color wonky on external monitor

Hi,

I'm having trouble with the colors on an external monitor. If I boot up
and run X, there's no problem. However, on resuming from hibernate, the
colors are all wrong - the screen looks like a rainbow. I can still make
out the windows and even read some of the text, which allows me to exit
fluxbox and restart X. After that everything is fine.

I had some more serious problems with hibernating and the external
monitor, which I fixed by adding:

OnResume 20 xrandr --auto

to /etc/hibernate/common.conf. Any suggestions on how to correct the
color without restarting X?

Thanks,

Tyler


Debian Squeeze
Fluxbox 1.1.1 : (c) 2001-2008 Fluxbox Team
Linux eku238261 2.6.30-2-686 #1 SMP Sat Sep 26 01:16:22 UTC 2009 i686 GNU/Linux
Server reports RandR version 1.3
Driver "radeonhd" [From /etc/X11/xorg.conf]
HP Elitebook 6930p
HP L1910 external LCD monitor, accessed through an HP docking station


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Gireesh Sreekantan <sgireeshmail DeleteThis @gmail.com> writes:

> On Wednesday 28 October 2009 19:40:46 Tyler Smith wrote:
>> However, on resuming from hibernate, the
>> colors are all wrong - the screen looks like a rainbow. I can still make
>> out the windows and even read some of the text, which allows me to exit
>> fluxbox and restart X. After that everything is fine.
>>
>
> Try doing
>
> xset dpms force suspend
>
> and then move the mouse or hit a key to see if the display comes back
> properly. My laptop gives a blank white screen on resume from hibernate and
> the above helps. Since you're using fluxbox, it may be easier to set up a
> shortcut for this command before you do the hibernate. That will ease your job
> instead of having to type the command correctly in a messed up display.

Thanks Gireesh,

The color problem is sporadic, and didn't recur again until I resumed
from hibernate this morning. Unfortunately, xset dpms force suspend
didn't help. When I run this command, the screen blanks for a second or
two, then reappears exactly as it was before. Note that I don't have to
touch the mouse or keyboard, the 'suspend' only lasts a few seconds.

Any other ideas?

Thanks,

Tyler


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