hibernate, external monitor, color problem

[Tyler Smith]

Hi,

I have a problem with my external monitor. If I boot while connected, 
the everything is fine. However, if I hibernate the laptop while not 
connected to the external monitor, and then resume after connecting, 
usually (I can't consistently reproduce the error, it happens more than 
50% of the time though) the external monitor color is distorted to be 
almost illegible - very strong pinks and purples, I can barely make out 
the windows on the screen and some text. I can only recover proper, 
legible colors, by rebooting or by closing and restarting X. The same 
problem occurs when connecting to an external monitor through a docking 
station, directly to a lcd television, or directly to an overhead projector.

Details:
I'm running Debian Testing on an HP Elitebook 6930p, with the xorg 
version packaged by Debian, version: 1:7.4+4.

I had previously had problems with getting the external monitor to work 
at all following hibernate, which was corrected by adding the following 
line to /etc/hibernate/common.conf:

OnResume 20 xrandr --auto

The default hardware detection in X used the radeon driver, which 
produced a lot of flickering. I used the Debian tools (dpkg-reconfigure 
xserver-xorg) to generate a xorg.conf file, which I then edited manually 
to use the radeonhd driver, which seems to work properly.

I've googled for answers, read the xrandr and xorg.conf documentation 
(which I don't fully understand, I admit), and my xorg.0.log (also 
mostly incomprehensible to me) but I'm not sure how to proceed.

Any suggestions would be welcome. I've attached my xorg.0.log and my 
/etc/X11/xorg.conf file.

Thanks,

Tyler

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