[Dri-users] Radeon,DRI, >1GB ram lockups

[Steve B. <st...@uh...>]

Hi,

I have just upped my RAM from 512MB to 1.5GB and am having 
problems. When I run any 3D accellerated app (e.g. gears) the machine 
locks hard. (Can't ping it)  I have checked the memory thoroughly using 
memtest86 and it checks OK.  I have narrowed the problem down to having 
more than 1024MB physically in the machine.  If I have only 1024MB 
installed, everything is fine.  If I have 1280MB or 1536MB installed, I 
have this problem.  Note that "boot:  linux mem=1024M" does not help. 
Nor does booting a kernel compiled without high memory support.

I suspect that X is using a memory address just above 0x40000000 (1GB) 
for something and now there is real memory at that address.  I notice in 
the log that something called SAREA gets mapped to 0x40016000 but I 
don't know what that is.

Changing the AGP aperture seems to help some.  Changing it from the 
default 64M to 8M allows "gears" to work and I even get an incompletely 
rendered frame in the game "Rune" before it locks.

I have also noticed that even my 2D X is freezing occasionally.  I have 
just commented out the loading of glx and dri and have not locked up 
again (yet) in 2D.

Here is my setup:

Epox 8KTA2 MB (KT133 chipset?)
1200MHZ Athlon (sdr)
1536MB sdram pc-133
Radeon QD
Xfree86 4.1
Kernel 2.4.14

I have not received confirmation to my subscription to this list, so a 
cc to st...@ru... would be greatly appreciated.


Any suggestions appreciated.

Thanks,
Steve Bergman
mailto://st...@ru...



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