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------- Additional Comments From [EMAIL PROTECTED] 2003-07-05 15:21 -------
Michel,
Sorry if I sounded rude before; I think it was the frustration of this problem
talking ;) Thanks for taking the time for this relatively minor problem. I
think we're getting closer to diagnosing it though.
I got some new [testing] information that may prove helpful:
a) I tried out Alex's suggestions. AGPMode and FastWrites do not seem to affect
the behavior or my system. With the mode at 4 or with the mode at 1, and with
FW enabled/disabled, I still get the random black screens of death I was getting
before, and I still get the occasional "good runs" of DRI programs from before.
b) PageFlip, OTOH, does affect the behavior or my system. With it enabled, I
notice a 400+ frame improvement in glxgears (from 1200-1400 to 1600-2000). With
this mode enabled, however, I simply HAVE NOT been able to get into a 3D
accelerated program AT ALL. TuxRacer gives me black screens of death
immediately, no fail, every time. But 2D work seems to be unaffected.
c) I read through the man page for the radeon driver and noticed the
ForcePCIMode option. I tried enabling this. Under this mode performance
dropped considerably (but Direct Rendering was still enabled). glxgears
produced 200 frames per sec. But TuxRacer started EVERY TIME. I tried about 15
consecutive times with no crash. Of course, TuxRacer was running alower than
when agpgart was being used, but it definitely was using DRI. The most
consecutive starts I could get for TuxRacer with no PageFlips (and no
FastWrites, and AGPMode of 1) was four. The 5th time crashed. And the next
time I rebooted, the 3rd time was a crash. So there definitely is a difference
in behavior here.
I am not sure what this all suggests. To me, it seems that if PCIMode works
seemingly flawlessly, then there is a problem of the interaction between agpgart
and the radeon driver. But I don't know for sure. What do you guys think?
-Andrew
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