Video not working in 640x480

[metalx1000]

I'm new to Linux (as most people seem to be)
I've got knoppix 4.something running of a LiveCD on my Sony Vio Laptop.

everything works great but 640x480 rez. When I try to set my screen rez down to 640x480 the picture gets all messed up.
Normaly this would not be a problem (why would I want to go down to 640x480?). But, when I try to play any games full screen (exp. Frozen-Bubble) the same thing happens. I'm guessing because they try to reset the screen rez to 640x480.

In windows I would guess that I have the wrong drivers installed. In Linux I have no clue what to do.

durning boot up the following is printed on the screen:


ATI:Raden IGP 340m, using XFree86(fbdev)Server
Monitor is Generic Monitor, H:28.0-96.0KHz, V:50.0-75.0Hz
Using Modes "1024x768" "800x600" "640x480"


Thanks for any help you can give.

[ckamin]

It appears that your setup uses the fbdev module, which should work with a wide variety of GPUs. You can look at the cheatcodes and use some to try specifying a different module to try. Look at the following link for some information: http://www.knoppix.net/wiki/Cheat_Codes Some you might try first would be xmodule=ati or xmodule=radeon. Might even try xmodule=fbxine. They might give you good or absolutely horrible results.

Good luck and be sure to post your results.

[metalx1000]

Well I have not tried what you have suggested, but I just up graded to Knoppix 5.0 and I don't have that problem with it. But I'll keep those in mind If I ever have that probem again.

Thanks

[ckamin]

Version 5.0.1 uses the X.org video and earlier versions used Xfree86. They handle video slightly differently, so that's probably made the difference for you.