VT screen corruption

[loser520]

When I switch to a virtual terminal using "CTRL+ALT+F1-F6" i'm getting screen corruption.

My Specs:
X800XL
Ubuntu 6.10 Edgy Eft
X Window System Version 7.1.1
ATI FGLRX 8.29.6

I see yellow lines all over the screen.

Anyone else having this problem?

Thanks.

[Michael]

If I recall correctly, this is a known issue with the fglrx display drivers. Not sure off hand if anyone has figured a work-around -- you may want to check the BugZilla.

[colo]

I'm in no way familiar with this bug, but you may want to try enabling or disabling - depending on whether you're using it at the moment or not - the framebuffer console for your VTs.

Apart from that, there's always the free drivers. They should even provide hardware-accelerated GLX for your graphics adapter by now.

[loser520]

Originally Posted by colo

I'm in no way familiar with this bug, but you may want to try enabling or disabling - depending on whether you're using it at the moment or not - the framebuffer console for your VTs.

Apart from that, there's always the free drivers. They should even provide hardware-accelerated GLX for your graphics adapter by now.

I tried using the "ati" driver that comes with edgy and it reports "no screens found". With the "radeon" driver I get the same screen corruption. This makes be think that this is an Xorg 7.1 issue, or a config issue on my side.

Anyone else have any insight??

[Coucou]

I already had this problem on 2 Ubuntu installations (both 32 and 64 bit) and from what I found, this error is related to the boot/GRUB/Splash screen resolution with the ATI drivers installed.
You should try and change this resolution to get your virtual terminal work again.

See here http://www.ubuntuforums.org/showthread.php?p=1541970 for a very well explained post on how to change this.
Basically you need to test different vga= options on the #defoptions line of your /boot/grub/menu.lst file.

I have no exact and always working solution because... it depends even on the same hardware !
For me the resolution that solved the problem is 1280x1024x24 in Ubuntu 32-bit :

# defoptions=quiet splash vga=795

And with the exact same machine, I need to stay in 640x480 to avoid virtual terminal corruption in Ubuntu 64-bit.

(All this is with ATI's latest 8.33.6 drivers installed.)