Ubuntu says no to non-free video drivers for Feisty (Linux.com)
Posted Feb 14, 2007 6:29 UTC (Wed) by
drag (subscriber, #31333)
In reply to:
Ubuntu says no to non-free video drivers for Feisty (Linux.com) by drag
Parent article:
Ubuntu says no to non-free video drivers for Feisty (Linux.com)
Just for a FYI..
I played around trying different things to get the best performance out of my 945g GMA 950 and these are the things that I've found out to help..
In my xorg.conf I did:
Option "mtrr" "on"
VideoRAM 131072
Option "LinearAlloc" "6144"
Option "UseFBDev" "false"
Not sure what mtrr is, but it did give me a decent performance boost. Also it lowered the cpu overhead of running glxgears by a large margin.
VideoRAM has it allocate a full 128megs of RAM. I think the GMA 950 can do up to 256 and the G965 can do up to 512.
LinearAlloc is to allocate enough ram to be able to use XV for HD-sized video.
Not sure if UseFBDev is nessicary though.
Then before running games or anything that I want to use 3d acceleration with I do:
export INTEL_BATCH=1
I don't know exactly what that is suppose to do, but I think it disables ome RandR stuff.
Then 16bit graphics will help you get a bit more out of your limited memory bandwidth, but it makes things look ugly sometimes.
All these things together probably gave me a 75% - 100% boost in 3D performance, which makes it usable for games like Tremulous.
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