Fedora 10 + Intel 945 poor GL performance

[Steve Hill]

On Mon, 8 Dec 2008, Brian Mury wrote:

> - switching to a console (such as Ctrl-Alt-F2) and back makes OpenGL
> switch from hardware rendering to software rendering (this is the most
> reproducible issue - it always happens - the next two I cannot reproduce
> on demand, but seem to happen at random)

Without Compiz running, glxgears reports 319fps (I have no idea if that's 
good or bad - I thought Fedora 8 used to give me a much higher number 
but I no longer have it installed to test with).  Seems to stay the same 
after switching to a console and back again.

When running Compiz (without glxgears), switching to a console and back 
again causes Xorg to give me a black screen with a mouse pointer.  After 
about 20 seconds the desktop reappears.  I thought this might be related 
to waiting for a VSync so I told Compiz not to wait for a VSync - no 
difference.

> - sometimes, when switching to a console, instead of the console I see a
> what looks like a corrupted copy of my desktop (though I cannot interact
> with it at all). Switching back to the desktop is fine, but the consoles
> all seem to stay that way until I reboot.

I haven't seen this problem, although I don't switch to consoles that 
often.

> - occasionally, X dies completely - my screen goes black, and several
> seconds latter the gdm login screen comes up.

When trying to resume from suspend or hibernate, my machine sits on a 
black Xorg screen for a long time (black screen but with a movable mouse 
pointer).  Sometimes it eventually recovers after several minutes, 
frequently it doesn't recover at all and I have to powercycle the machine.

> and yep, I do seem to be missing a xorg.conf, odd that I didn't notice
> that before.

I understand that we're no longer supposed to have an xorg.conf for 
"normal" systems.  Personally I think this is a really bad decision if 
only because there is now no template xorg.conf there to edit when I need 
to add a custom option.

  - Steve
    xmpp:steve at nexusuk.org   sip:steve at nexusuk.org   http://www.nexusuk.org/

      Servatis a periculum, servatis a maleficum - Whisper, Evanescence