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Garrido
n00b
Joined: 15 Dec 2004
Posts: 58
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 Posted: Fri Jan 21, 2005 2:46 pm Post subject: AGPGART vs NvAGP |
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I've (semi-)successfully installed my FX 5200 card - but, after some tweaking, I can only get around 900-950 FPS with glxgears, this on a XP 2500+ Barthon with 512MB RAM. Turns out I'm not using the NvAGP thingy, even though I have:
| Code: | | Options "NvAGP" "1" |
in my xorg.conf. And if I do
| Code: | | cat /proc/drivers/nvidia/agp/status |
it says NvAGP failed loading.
The card works fine, I can run my games, OpenGL is working, I have direct rendering... So the real  is: what is the difference between AGPGART and NvAGP? Should I expect better performance with NvAGP? And what do I have to do to use it? I tried messing around with my AGP support optins in the kernel and recompiling it, but that only made it worse - no xorg at all.... |
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ZothOmmog
Apprentice
Joined: 05 May 2003
Posts: 216
Location: Nashville, TN
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| Posted: Fri Jan 21, 2005 2:53 pm Post subject: |
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Basically, the question of whether NvAGP or AGPGART works best is dependent on your motherboard. The README that comes with the nvidia drivers gives a list of motherboards that perform well with NvAGP.
Generally speaking, AGPGART is a more surefire choice. NvAGP has given me many a problem; odd considering I have an nForce2 motherboard.
This has been covered in the forums many, many times. Search around a bit for a complete answer.
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kmare
l33t
Joined: 20 Nov 2004
Posts: 619
Location: Thessaloniki, Greece
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| Posted: Fri Jan 21, 2005 3:12 pm Post subject: |
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you have agpgart loaded... that's why with cat /proc/drivers/nvidia/agp/status you got the failure... add to /etc/hotplug/blacklist
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# do not load agp in kernel drivers
agpgart
nvidia-agp
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to use NVAGP.
you can't have both agp drivers running at the same time... btw: you should have around 2000+ fps in glxgears... but as we all know it's not a standar benchmark utility... |
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predatorfreak
l33t
Joined: 13 Jan 2005
Posts: 708
Location: USA, Michigan.
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| Posted: Fri Jan 21, 2005 6:14 pm Post subject: |
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On my machine, both AGPGART and NvAGP work quite well. Theres no noticeable different for me (proformance, stablity, etc) between the two. Also as pointed out above, AGPGART cannot be loaded if you want to use NvAGP.
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System: predatorbox
Distro: Arch Linux x86_64
Current projects: blackhole, convmedia and anything else I cook up. |
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