[plug] Ubuntu 4.10, custom 2.6 kernel & ATI's fglrx graphics driver

[Frederic Valton]

Fixed - though I thought I would answer my own question for the benefit
of all:

The two 2.6.7 custom kernels (Debian and Ubuntu) were in fact slightly
different: I had enabled the Direct Rendering Manager (CONFIG_DRM) and
the ATI Radeon (CONFIG_DRM_RADEON) option in the problematic kernel.
After disabling these and installing the ATI drivers in favour of 
Ubuntu's, fgl_glxgears now reports ~800 fps:

3630 frames in 5.0 seconds = 726.000 FPS
4244 frames in 5.0 seconds = 848.800 FPS
4103 frames in 5.0 seconds = 820.600 FPS

and fglrxinfo indicates that the ATI driver is being used:

display: :0.0  screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: RADEON X800 PRO Generic
OpenGL version string: 1.3.4641 (X4.3.0-3.14.6)

Will know for next time...


Frederic Valton wrote:
> Hi,
> 
> I've been trying to puzzle this one out for the last few days but 
> without much success and thought that some lateral thinkers on the PLUG 
> mailing list might be able to help.
> 
> 1. The problem:
> 
> I have no GL acceleration under Unbuntu 4.10 running a customised 
> (patched) version of kernel 2.6.7. The graphics card is an ATI X800.
> 
> 2. Drivers:
> 
> Both the Ubuntu fglrx-driver and ATI's own fglrx-4.3.0-3.14.6 have been 
> tested.
> 
> 3. Details:
> 
> All libGL.so.1 and libGL.so.1.2 symbolic links point to 
> /usr/X11R6/lib/libGL.so.1.2 installed with the fglrx driver.
> 
> lsmod indicates that following modules are loaded (amongst others):
> 
> Module                  Size  Used by
> via_agp                 6784  1
> agpgart                27624  1 via_agp
> fglrx                 234268  0
> 
> yet fgl_glxgears produces the error: "Error: couldn't get fbconfig"
> 
> and fglrxinfo states:
> 
> display: :0.0  screen: 0
> OpenGL vendor string: Mesa project: www.mesa3d.org
> OpenGL renderer string: Mesa GLX Indirect
> OpenGL version string: 1.3 Mesa 4.0.4
> 
> ie. references the old xlibmesa-gl driver.
> 
> 4. The puzzle:
> 
> Both versions of the fglrx driver work under Ubuntu's 2.6.8.1-4-k7 and 
> 2.6.8.1-4-386 kernels _and_ the ATI fglrx driver works fine with the 
> same custom 2.6.7 kernel but this time under Debian Sarge.
> 
> What am I missing? Any help would be much appreciated.
> _______________________________________________
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> http://spark.plug.linux.org.au/cgi-bin/mailman/listinfo/plug
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> 
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> 
> 


-- 
   Fred Valton