XBMC running too slow
#1
Hi I am a linux newbie although this is the 3rd of my computers I have installed ubuntu on. This 3rd one is giving me problems with XBMC, its running too slow to be usable. Any pointers would be great.

Heres whats running on my Acer Aspire Laptop:
lntel Core 2 Duo 1.66 Ghz
1GB RAM
Intel Graphics Media Accelerator 950

ubuntu 8.1 (i686)
XBMC installed from PPA (version in synaptic says: 8.10final1-intrepid4)
Visual effects in Ubuntu are set to 'None'

When I do glxgears I am only getting about 240fps

I realise that the graphics card is pretty much minimum requirements but I have my laptop on dual boot for the moment and XBMC runs fine in Vista with the hardware i have, but i would really like to run linux as my main OS.

I have searched lots of forums and there does seem to be some issues with this graphics card but i have struggled to find a definitive answer

I have tried updating xorg config with
Code:
Section "Device"
(...)
        Option "MonitorLayout" "LVDS,VGA"
        Option "Clone" "true"
        Option "AccelMethod" "EXA"
        Option "MigrationHeuristic" "greedy"
        VideoRam       229376
        Option "CacheLines" "1980"
EndSection

and updating /etc/profile with:

Code:
export INTEL_BATCH=1

but this didn't make any difference

Running glxinfo | grep renderer results in this:
Code:
OpenGL renderer string: Software rasterizer

I am not sure if that's correct?? but even if it is not correct I am not sure what next steps I should take to try and get the video card to play nice (if its at all possible)

Any help much appreciated. Cheers
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#2
Disable CPU throttle (power mode set to "performance").
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#3
mr_raider Wrote:Disable CPU throttle (power mode set to "performance").

thanks for the input, but I don't see any kind of settings like that in my BIOS or in system->preferences->power management so not sure if you were meaning something else entirely? cheers anyway
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#4
fixed it thanks....

in case anyone else has same issues.....

After some more reading I was convinced it was something to do with the graphics card and the fact that even though direct rendering was enabled open GL was reporting Software Rasterizer. Apparently it's because I had my laptop connected to my tv, but the graphics card can't handle > 2048 resolution see here ........
http://ubuntuforums.org/showthread.php?t...rasterizer

I followed the instructions in the link above and updated xorg.conf glxinfo now reports:

Code:
sudo glxinfo | grep renderer
OpenGL renderer string: Mesa DRI Intel(R) 945GM 20061102 x86/MMX/SSE2

and hey presto XBMC is nice and smooth and fast again.

Yay no more vista !
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