can't get RHEL display resolution to change
 

I can't get my resolution to change for the life of me... i switched to 640x480.. restarted.. no change.. changed it back to 800x600.. restarted.. still no change... anyone experienced this problem b4?

How are you attempting to change the resolution? From command line editing the config or thru a GUI? Better and more details always helps in us providing better replies and possible solutions!

sorry.. it's GUI... i went to Applications > System Settings > Display.. and changed the setting there..

I've even specified my monitor is 1024x768.. the resolution option doesn't even give me that option.. it only gives me 640x480 & 800x600..

Don't use this tool, it never seems to work as I've encountered this before. For the best results in what you want, edit the XF86config file manually.

i opened the xf86config.py file.. but what line do i edit to force the resolution?

i also went to Applications > Preferences > Screen Resolution.. and my only choice there was 640x480

help anyone? =)

It's possible that you have the wrong video card and / or monitor selected. I haven't had any problem using the redhat-config-display or in the case of Fedora3 system-config-display .
If you do want to edit the file, it would be nice to know what your system has.
As root user, type the command: ddcprobe and note the information.

For example, here's my output:
On my system, that goes in the /etc/X11/xorg.conf . That should be similar in your XF86config file like this..
Also, the video card information , I ran the comand: lspci |grep VGA
That returns somthing like this, so I look in the config file for related info....
00:01.0 VGA compatible controller: Intel Corp. 82810E DC-133 CGC [Chipset Graphics Controller] (rev 03)

when i ran ddcprobe.. here's what i got:

my xorg.conf file contains this:

lspci |grep VGA retuns this:

The VendorName and ModelName are bogus and that is likely because ddcprobe can't even detect it.
I have had that type of problem on some monitors. The only thing that really helped was to swap out the monitor. Here are a couple of things to try though...
First, I would run yum update to make sure everything is current.
Look on the back of the monitor for proper make and model information.
Run the redhat-config-display or system-config-display and manually select the correct monitor. Sometimes, you can select a model which is very close. If there is nothing close, select a generic monitor. If that doesn't help, try another monitor.

I tried a diff monitor.. still giving me same symptoms... the Applications > Preferences > Screen Resolution
only gives me one choice.. and it's 640x480...


the "Display" pref gives me 2 choices but it doesn't seem like this one matters... "Screen Resolution" seems to be the one the system is following... is there a way to force screen resolution?

perhaps it's my cirrus card... how can i add new video card in RHEL 4 AS? i plugged in another vid card but can't find where i can add it in the RHEL system.. i found Hardware Browser.. but it couldn't detect my new vid card.. hmmm

I'd kind of like to try one thing at a time. What kind of output do you get with the new monitor and the command: ddcprobe ?

same result:


:(

Do you know what is the make and model of your monitor?

yes it's KDS XFLAT.. i chose Korea Data System - XF models


is this normal? it's been 4 days i've installed linux for the first time.. and i cna't even change the resolution? imagine when i start doing more complicated tasks... this will take forever to learn linux.... very discouraging :(

Can you manually put that info into the xorg.conf ?
VendorName "Korea Data System"
ModelName "XF ????" ###Put the model here
Also, try default depth 24