Red Hat Bugzilla – Bug 14941
Image corruption in default iinstall -XF86 4.01
Last modified: 2008-05-01 11:37:57 EDT
Severe image and font corruption in default install.. Can be fixed by refreshing the application window, but it comes right back, Card: Matrox G200 AGP 8MB
Created attachment 1735 [details] Screen shot showing courrption - llargish
I'm not sure if this is related or not- but on my system (Athlon 800/MSI-6330/Voodoo3/NEC MultiSync 5FGe) it is not a good idea to "Test this Configuration" during a graphical install. I selected 1024x768x16bpp (works in Zoot) but here the test appears in 640x480 ("Can you see this" is in lower right of screen and you scroll around). If you say yes you are returned to the installer, but the screen is corrupted, the mouse still moves, but no input is accepted from the keyboard (not even CTRL-ALT-BKSPACE). After trying several times, I went 'text' and it installed fine.
Additional info: Corruption only occurs if the agpgart module is loaded. Is this module still needed for DRM/GLX in XF86 4.0.1? With the module unloaded, all is fine.
Yes, it is needed. Does it persist if you load agpgart but *not* the mga kernel module?
How can I /not/ load the mga module? It's required for my X server.
It also appears that the agpgart module doesn't automatically load - I've been using modprobe agpgart. I'm using runlevel 5, logging in with gdm.
The mga module isn't required except for 3D support. You can cause it not to load by removing: Module "dri" from /etc/X11/XF86Config-4.
I've commented out the "dri" line from XF86Config-4, and the corruption is gone, with or without a modprobe agpgart. 3D stuff (such as the gears screensave) is very slow without agpgart, however, and Q3 is unusable.
Please try: http://www.lucon.org/xfree86/4.0.1/g200.patch
That patch will be in XFree86-4.0.1-0.44, and it should fix this problem.