Me just install slackware 11.0 and the default resolution is at 1024x768 61hz but i want to use 800x600 at 72hz. i set the resolution to 800x600, the kde crash. i tried to use xorgconfig to reset but no luck. graphic card is trident blade 3d. any help/hint? thank you.

Ok, i had problem with trident blade so i change the graphic card to ati rage pro 2x and the result it the same. kde crash whenever i change the resolution to 800x600 or lower. Not only kde, i tried fluxbox and xfce , all the same. i'm not sure where is the problem. the kernel me using it bareacpi.i

could also try the automatic xconfig option to see if it could configure it manually or search the web and try finding a specific driver for your card. to help we would also need the model card you have...9880 or etc.

My graphic card is ati rage pro 2x 8mb. Monitor 15" acer 55s. I tried using xorgconfig.

it using 1024x768 at 61hz . when i try to change it to 800x600 at 73hz, the whole kde crash and shows this errors :

Please consult the The X.Org Foundation support
at http://wiki.X.Org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

kdeinit: Fatal IO error: client killed
kdeinit: sending SIGHUP to children.
warning: leaving MCOP Dispatcher and still 13 object references alive.
- Arts::SampleStorage
ksmserver: Fatal IO error: client killed
kwin: Fatal IO error: client killed
*** kdesktop got signal 1 (Exiting)
kicker: sighandler called
/usr/X11R6/bin/xinit: connection to X server lost.
klauncher: Exiting on signal 1
Hangup
GOT SIGHUP
kdeinit: sending SIGTERM to children.
kdeinit: Exit.
kicker: sighandler called
kicker: Fatal IO error: client killed
klauncher: Fatal IO error: client killed
root@********:~# kdeinit: Fatal IO error: client killed
kdeinit: sending SIGHUP to children.
kicker: sighandler called
startkde: Shutting down...
Warning: connect() failed: : No such file or directory
Error: Can't contact kdeinit!
startkde: Running shutdown scripts...
startkde: Done.
kdeinit: sending SIGTERM to children.
kdeinit: Exit.

and once i press enter, system back to runlevel 3. first i thought it might be caused by my kvm switch but i tried without kvm and result is same. not only kde, even fluxbox crash when i change the resolution using xrandr and same goes to xfce. any idea?

Ok, some how i made the system works at 800x600 but the refresh rate stuck at 60hz but actually the monitor can do 72-75hz at 800x600 without any problem. i got try the refresh rate before on suse 9.1. again, the graphic card is ati rage pro 2x 8mb and monitor is acer 55s.

Ok, i've solved the problem by manually selecting different horizontal and vertical refresh rate. Thank you.