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Old 01-21-2008, 01:48 AM   #1
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Registered: Mar 2005
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Twinview, non-xorg.conf problem

I have an unusual Twinview problem in that my xorg.conf settings are appropriate.

I have an XFX Nvidia 7900GS AGP video card. I'm running Debian Etch with the latest proprietary Nvidia driver (169.07) with the 2.6.18 kernel (from the Debian repo) and this is my strange problem:

I boot my machine and when I am greeted with the graphical login screen one of my monitors is black and appears to be in "sleep mode." If I power off both monitors, wait a few hours, then power them on, both heads come up. If I ctrl+alt+f1 into a CLI then (without doing anything) ctrl+alt+f7 back to the GUI login, the one troublesome head is down again. I restart gdm with new xorg configs (and the configs seem to load, producing new logs and differing desktop configurations) but this won't bring up the other head. It requires this power-down period before I can get the head up. Once the head is up, I can change my card settings with the nvidia-settings app and the display behaves normally. Xorg log doesn't show errors really, except font path problems but the appropriate paths are given later and get sorted out (clearly since there are no such problems when the heads are up).

I have tested both monitors and cables in numerous configurations and am satisfied that both are in perfect working condition. I have a 600W thermaltake PSU, so there's no lack of power here. The card is about a week or 2 old, the case has been blown out with compressed air and the thermal sensors indicate that it is idling at 46C (quite normal). I want to pass this off as some kind of damage on the DVI port in question (since it's always the same one) for the following reason:

The only anomaly is that this occurred after I tripped a breaker. Everything was fine until then, then when I rebooted I had these problems. I did a fresh install to see if I could start from scratch and get everything sorted out (maybe there were some modifications I may have forgotten?) by just doing a basic install followed by loading the proprietary Nvidia drivers and configuring X appropriately (pretty much nothing else).

Only thing is, it seems quite unlikely that this would happen as a result of that, seeing as how I can pull monitor serial number information for both monitors through the DVI port that could be knackered.

This concludes my sob-story. Any suggestions? Thanks for even reading this long-winded post.



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