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View Full Version : [ubuntu] Slow OpenGL graphics on NVidia GeForce



jgb2185
January 24th, 2009, 05:36 AM
I just installed a new LCD monitor (Acer X223W), and have just enough knowledge to cobble together an xorg.conf file to enable the full 1680x1050 resolution. I am not smart enough to figure out why OpenGL graphics now are so slow. GL-based screensavers, and Second Life in particular, are so slow as to be unusable. I am running Ubuntu 8.04.

I was trying to enable both the full resolution and the Compiz advanced desktop effects. At some point in my struggles, I rebooted and found myself in a graphic setup screen, following a warning that Ubuntu was running in low-res mode. I had to pick a card, and I selected the Geforce 4. I am not certain this was the right choice.

I now have the full resolution and the Compiz effects, but very slow OpenGL-based graphics. Any help in sorting this out will be most welcome.

Details of the configuration can be found here:


xorg.conf (http://pastebin.com/f12859fd0)
output of lshw (http://pastebin.com/f2226ffd7)

Thanks...

JGB

Melcar
January 24th, 2009, 06:12 AM
Was performance higher before you switched resolutions? Could be that your card is just too slow for certain things at 1680x1050 (games particularly get more demanding as the resolution increases).

jgb2185
January 24th, 2009, 06:18 AM
Honestly, I hadn't tried anything using OpenGL until after I had got the full resolution working. I can set the resolution lower and try it out.

I know that games can be demanding, but even the screensavers are running very slow. Solarwinds, for instance, is just a bunch of multicolored lines, but runs like molasses in January.

JGB

jgb2185
January 24th, 2009, 02:16 PM
It turns out that Melcar guessed correctly; the GeForce4 card cannot handle Second Life at the maximum screen resolution of 1680x1050. It runs SL okay at 1400x1050, and I can live with that for now.

Thanks...

JGB