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Old 06-02-2005, 11:12 AM   #1
demianill
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Registered: Jun 2005
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Unhappy Help ! Problems with video configuration...


Hi all,

Brazilian congratulations ! Sorry about the poor English...

I'm a new user with Linux. I'm using CentOS 4.0 and WinXP (dual boot)

I bought a LCD monitor LG Flatron and I changed the resolution to meet the maximum resolution of my new screen. Unfortunately, I chose the wrong value (1600 X 1280), not supported by the monitor (the maximum value is 1280 X 1024).

After reboot, the monitor shuts off before logging in saying its out of its frequency range.

I only can use my computer in Windows... it's not good. I prefer CentOS....

So...I need help. I would like to get to a command prompt from grub and manually configure the video settings for my lcd. My grub Options are only CentOS and Windows, without Failsafe mode. I don't know how to boot in Prompt Mode.

I don't know any of the neccessary commands, because I'm completely new in Linux.

Please, help me !


Thanks!


Demian.
 
Old 06-02-2005, 01:08 PM   #2
securehack
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Registered: Sep 2003
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Do you have a boot floppy for CentOS? That will bring you to shell.

--Abid Kazmi
 
Old 06-02-2005, 01:13 PM   #3
demianill
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Thanks for the answer, but I don't have a boot disk. How can I make it ? It's possible to find it in the Internet ?
 
Old 06-02-2005, 01:28 PM   #4
phaserx
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When you boot up and the monitor hibernates because of an invalid resolution, press the following key combination at the same time:

CTRL+ALT+F1

This will kick the monitor back on and drop you to a console login. From there you can login and edit the /etc/X11/xorg.conf (or XF86Config) file..
 
Old 06-02-2005, 03:11 PM   #5
securehack
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Forget my suggestion, use phaserx's suggestion. And yes you can find it on the internet but it is always included in the distro CD. It is usually located in the boot, disks, or .bootdisks directory.

--Abid Kazmi
 
Old 06-03-2005, 06:57 AM   #6
demianill
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Thanks securehack & phaserx !!! I'm travelling today, but tonight I will try !
 
  


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