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#1 2009-06-21 21:42:36
- cm4021
- Member
- Registered: 2009-06-21
- Posts: 3
[SOLVED] nvidia / compiz / xorg / idk what lag issue
I have a strange issue where if my computer is idle for a short time (somewhere in the neighborhood of 30 seconds) my 2d acceleration seems to be disabled. Then, when I perform some 2d action (drag a window, move a scrollbar/mousewheel, minimize,maximize, etc.) there is bad lag as if very slow software rendering is taking place, then normal 2d rendering kicks back in, and I can scroll smoothly or drag a window without the 2fps, horizontal tearing, etc occuring. Then if i stop to read a page in firefox again, and stop for longer than about 30 seconds, the lag starts again. I've been digging through nvidia-settings -e all, xorg.conf, a little on the compiz side, but theres not a lot to go on there. Anyone else experience this issue? Any information at all would be appreciated, this has been driving me crazy.
I'm on a new install of archlinux 64bit with only nvidia xorg and compiz-gtk installed (no de, no panels/bars/whatever yet). my vid card is a 9800gt. Let me know if theres any configs or logs that i could post which might include helpful info. Thanks in advance.
Last edited by cm4021 (2009-06-21 23:23:20)
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#2 2009-06-21 23:32:32
- cm4021
- Member
- Registered: 2009-06-21
- Posts: 3
Re: [SOLVED] nvidia / compiz / xorg / idk what lag issue
Many google searches later, I discovered that this issue is due to powermizer underclocking my card and that powermizer settings are not configured through nvidia-settings, but through xorg.conf in the device section with
option "RegistryDwords" "........
see: http://tutanhamon.com.ua/technovodstvo/ … IX-driver/ this is written from the perspective of saving power on a laptop but the information needed to disable powermizer is in there. AFAIK this is completely undocumented in any of the nvidia man pages or on the nvidia website (maybe in whatever source is released for the driver?)
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#3 2009-06-22 01:59:52
- iBertus
- Member
- From: Greenville, NC
- Registered: 2004-11-04
- Posts: 2,228
Re: [SOLVED] nvidia / compiz / xorg / idk what lag issue
I was under the impression that this didn't work with current nvidia drivers but only with the older ones. I tried with my laptop and 9800m and it didn't change the powermizer configuration at all. BTW, the driver used was the 185.xx series beta drivers.
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#4 2009-06-22 04:37:57
- cm4021
- Member
- Registered: 2009-06-21
- Posts: 3
Re: [SOLVED] nvidia / compiz / xorg / idk what lag issue
Ah you may be right, i'm running 180.51 (what pacman gave me). I guess i'll avoid upgrading til I hear that the issue is fixed, thanks for the headsup. Were you following this issue anywhere in particular?
Just looked through the changelogs over at nvidia.com and it seems like the major new feature for the 185 drivers is upgraded cuda support. This doesnt affect me, but is there any other reason for upgrading that i'm missing?
Last edited by cm4021 (2009-06-22 04:44:56)
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