Ubuntu
xserver-xorg-video-via package

how to disable glx

Asked by mikko

Via K8M800
Is there any way to disable glx in gutsy? In feisty I did it by commenting out the glx. But now in gutsy there's no "module" section in xorg.conf. I can't watch dvd's with vesa driver, (output is sooooooooooo slow) so via is the only choice.
But only if glx is set to "off." So I can do my works without freezes.

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Simos Xenitellis  (simosx) said : 		#1

There are several bug reports on the specific graphics card which indicate that indeed there is a problem with 3D.
There real issue is that Via (the company that makes the motherboard) is not doing a good job in supporting their hardware in Linux. They provide "binary drivers" for Linux through they do not make an attempt to provide full open-source support.
It would be beneficial if you could join their forum and voice your concerns at
http://forums.viaarena.com/categories.aspx?catid=28&entercat=y

For technical background reading, see also
Possible source of the problem
http://wiki.openchrome.org/pipermail/openchrome-users/2006-May/001203.html
Bug report on Freedesktop.org
https://bugs.freedesktop.org/show_bug.cgi?id=5092
Bug report on Ubuntu Bugs,
https://bugs.launchpad.net/ubuntu/+bug/57062

I am not familiar with the new xorg.conf in Gutsy. Is there a /etc/X11/xorg.conf in Gutsy? Could you please post it to
http://ubuntu.pastebin.com/
and send the URL here?

Hope this helps.

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mikko (mikko-) said : 		#2

http://ubuntu.pastebin.com/f1ebd9333

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mikko (mikko-) said : 		#3

I found it! I think new xorg loads all modules by default, uncommenting doesn't help. So modules have to been disabled instead. I put these lines to xorg.conf:

Section "Module"
        Disable "dri"
        Disable "glx"
EndSection

And now glxinfo:
mikko@unelma-laptop:~$ glxinfo
name of display: :0.0
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual

   visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
 id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
0x21 24 tc 1 0 0 c . . 0 0 0 0 0 0 0 0 0 0 0 0 0 None
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
0x3a 32 tc 1 0 0 c . . 0 0 0 0 0 0 0 0 0 0 0 0 0 None

So I can use my machine without lockups (I hope) But xv-output still works and dvd playback is quite nice. With vesa-driver it's not possible.
Thank you for you long answer.