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Doctor Feelgood
Arrrrghh!
Joined: 07 Apr 2003
Posts: 20349
Location: New Jersey
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 Posted: Sat, 10 Jun 2006 23:41:16 Post Subject: recover from bad display settings in Linux |
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I have a 1280x1024 LCD connected to my CentOS 4.3 x64 based system. It had been running at 1024x768, and I upped it to 1280x1024, and logged out as instructed.
In the past if things didn't work it would walk me through the low res way to fix it, but not this time... Just a blank screen with the monitor showing its no signal message.
That was in Gnome, and I was able to reboot and get in through KDE... and of course I tried to set it to 1280x1024 too, and then logged out... same problem. 
Now I can't log in at all graphically, and have no idea how to fix this!
Any help?
Thanks!  |
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Little Bruin
Boo Boo
Joined: 07 Apr 2003
Posts: 667
Location: Pic-A-Nic Basket |
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Blue|Fusion
Rated XXX
Joined: 30 May 2005
Posts: 441
Location: Cleveland, OH
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| Posted: Sun, 11 Jun 2006 01:03:52 Post Subject: |
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In the console, open up /etc/X11/xorg.conf with a text editory (nano/pico or vim), and change the following line in the Screen section from:
| Code: | | Modes "1280x1024" "1024x768" "800x600" "640x480" |
to:
| Code: | | Modes "1024x768" "800x600" "640x480" |
And it should efault to 1024x768.
As for it not working at 1024x768, what kind of connection are you using and what video card / drivers are you using? If it's nVidia card and you're using the pre-installed "nv" drivers, that's probably your problem. |
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Doctor Feelgood
Arrrrghh!
Joined: 07 Apr 2003
Posts: 20349
Location: New Jersey
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| Posted: Sun, 11 Jun 2006 08:28:28 Post Subject: |
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Well, I can't figure out what drivers to use... The motherboard has integrated ATI x200 (or x300 according to some documents) graphics. I have tried a bunch of different ATI Radeon drivers built in to no avail, so I have been using the Generic VESA drivers.
1024x768 works... Its 1280x1024 that doesn't.
Thanks for the help!!!  |
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Doctor Feelgood
Arrrrghh!
Joined: 07 Apr 2003
Posts: 20349
Location: New Jersey
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| Posted: Sun, 11 Jun 2006 09:31:08 Post Subject: |
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I had been avoiding a download of drivers from ATI as I thought it would be a big PITA! I know I tried in the past with either ATI or nVidia and I was highly frustrated.
Anyway, this was easy enough, installed quickly, and after a reboot I am up and running on 1280x1024 and it looks really really good!
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Blue|Fusion
Rated XXX
Joined: 30 May 2005
Posts: 441
Location: Cleveland, OH
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| Posted: Sun, 11 Jun 2006 09:57:13 Post Subject: |
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Make sure you edit your xorg.conf as required by your drivers to get best performance. I also throw in the
| Code: | | Option "RenderAccel" "true" |
in the Device section of the xorg.conf to accelerate hardware rendering a bit.
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5 home-built PCs, ASUS A6Jc Laptop, and a PowerEdge 2650 - all running Gentoo. Now if only I can get a car and plane to run it. Take a look at my Gallery! |
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