Red Hat Bugzilla – Bug 143877
radeon 7000 dualhead configuration accepted, but nothing happens
Last modified: 2007-11-30 17:10:57 EST
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Description of problem:
I have a ati-radeon-7000 card with dualhead capabilities. When
configuring it with s-c-d everything is accepted, but after restarting
X, nothing has changed. I have the same output on both displays.
The xorg.conf produced by s-c-d seems correct (is attached).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. starting s-c-d
2. giving the correct hardware data (radeon,dualhead,monitors etc)
3. restarting xorg
Actual Results: nothing has changed
Expected Results: a dualhead configuration with a spanned desktop
I had dualhead working with debian unstable and debians dri-enabled
xserver from Michael Daenzer.
Created attachment 109192 [details]
my xorg.conf produced by system-config-display
Please attach your Xorg.log also.
Also can you boot without rhgb (edit the grub line) and see if that makes a
Created attachment 109232 [details]
Xorg log file
booting without rhgb makes no difference ...
Changing cable from bnc to d-sub solves the bug ...
X needs ddc to detect the second monitor (see log).
Still strange: the first mon works without ddc using a bnc cable which
offers a much better quality with my monitors.