OpenGL screensavers MUCH slower now

[Douglas Stewart]

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Mike Lurk wrote:

|
| Since nothing has changed in the Radeon drivers or X server,
| libGL, DRI drivers, etc. whatsoever in a long time, it is highly
| unlikely that any performance loss is an XFree86 driver induced
| problem.
|
| Oddly enough, Ingo Molnar, and several other people have remarked
| to me this week that OpenGL performance has magically sped up
| dramatically lately.  I haven't changed anything which would
| change performance up or down, so I'm surprised anyone sees any
| difference at all.  My guess is something in the kernel changed.
|
| Personally, I see no change in performance either way.
|


After some further messing about with stuff, (namely, the Display
(redhat-config-xfree86) and Screen Resolution (gnome-display-properties)
tools in the preferences:/// and system-settings:/// Nautilus views) I
think I may have uncovered the issue: the Display tool allows me to
choose a screen resolution far above what the laptop screen can handle.

The screen can go to 1400x1050, yet the xfree86 config allows me to pick
all the way up to 1920x1440.  I was having all manner of problems with
OGL stuff when I had the max res. set to 1600x1200.  I bumped this down
to 1280x1024 and everything seems to be happy now, OpenGL-wise.

However, gnome-display-properties adamantly REFUSES to set my resolution
to the default I ask it for.  I've told it to use 1280x1024 countless
times. It does an xRandR and keeps it for the session, but when I log
out/log back in, it resets to 1024x768.  Also, after the RandR, the
OpenGL screensavers don't resize.  They default to 1024x768 and run in
only a portion of the window.

Any ideas?

- --
- ----------
Doug Stewart
Systems Administrator/Web Applications Developer
Lockheed Martin Advanced Technology Labs

Quidquid latine dictum sit, altum viditur
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