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Old 06-15-2007, 09:04 PM   #1
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ATI Driver Problem. Analog works but DVI doesn't

I am running SUSE 10.2 64-bit and am trying to run the ATI proprietary driver obtained from there website. I have a ATI Radeon 850 PCI-express card. I successfully installed the driver and it exhibits the following behavior. If I hook my monitor up via the VGA head on the video card linux works fine, however if I hook it up with the DVI head I get a black screen when X starts. If I boot up with the VGA cable I can give it the following command to switch to the DVI head which then works: aticonfig --enable-monitor=tmds1 --effective=now. I am assuming since I can get the DVI to work once X starts there should be a way of getting it to work on boot. I would use the VGA head but that is taken by my XBOX. I am new to linux it might be missing something very obvious. I would appreciate any help provided.
Old 06-16-2007, 03:27 PM   #2
Junior Hacker
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If you look about mid way down the page of the link below you'll find an option called "MonitorLayout" which I believe would be placed in the 'Section "Monitor"' of the /etc/X11/xorg.conf file. Based on how I understand that option, you would add a line to the monitor section called Monitor Layout to use the primary port (head) as in the sample below:
Section "Monitor"
    Identifier     "Dell 1905FP"
    HorizSync       28.0 - 64.0
    VertRefresh     43.0 - 60.0
    Option         "DPMS"
    Option         "MonitorLayout" "TMDS on primary"
My Dell 1905FP and nvidia card have DVI, but I don't have that option specified, probably because it was hooked up via DVI during installation.

Last edited by Junior Hacker; 06-16-2007 at 03:30 PM.
Old 06-19-2007, 10:23 PM   #3
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ATI driver

I tried adding that line, as well as other combinations and still am having the same problem. I would appreciate any other suggestions.

Old 09-27-2008, 10:09 PM   #4
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Suse 11!


I am having the same issue with openSUSE 11. The VGA works fine but the DVI does not. Back to xorg.conf


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