Many thanks for the response. > False. Using a write-combining MTRR helps performance on PCI as well as > AGP.
I actually have an AGP card (ATI Radeon7000) > > On startup, before X has ever run, do a "cat /proc/mtrr". You should > see a single MTRR the size of your memory, like so: > > reg00: base=0x00000000 ( 0MB), size= 256MB: write-back, count=1 Doesn't work here. If I do "cat /proc/mtrr" before running an X-server I get nothing at all: "" > Then, start X. In an xterm, do "cat /proc/mtrr". You should see some > more mtrr entries there. Here's mine: > > reg00: base=0x00000000 ( 0MB), size= 256MB: write-back, count=1 > reg01: base=0xd4000000 (3392MB), size= 16MB: write-combining, count=1 > reg05: base=0xd0000000 (3328MB), size= 64MB: write-combining, count=1 Running "cat /proc/mtrr" after starting the X server gives me the following: reg00: base=0xd0000000 (3328MB), size= 32MB: write-combining, count=1 I do not seem to be able to modify this entry with "echo "base=0xd9000000 size=0x2000000 type=write-combining" >| /proc/mtrr" When I do another "cat /proc/mtrr", I simply get the same as before: reg00: base=0xd0000000 (3328MB), size= 32MB: write-combining, count=1 > Additionally, you can look at the XFree86 log file, Can't find anything about MTRR in "XFree86.0.log". I included a copy of the file in my first post. Any ideas on how get MTRR set up under these circumstances? Thanks, Markus _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
