Description of problem: my AMD64 machine with a Radeon 9600XT locks up completely when I start up X with xinit and enter a command which requires the xterm to scroll. Version-Release number of selected component (if applicable): XFree86-4.3.0-62 How reproducible: always Steps to Reproduce: 1. check that XF86Config doesn't contain any Xaa* or noaccel options 2. exec xinit 3. enter a commnd which produces enough output to require scrolling Actual results: lockup Expected results: normal operation Additional info: - XFree86 works as expected with Option "noaccel" "true" - Option "XaaNoScreenToScreenCopy" "true" is the culprit, machine locks up if this line is commented out. - disabling Option "XaaNoScanlineCPUToScreenColorExpandFill" "true" leads to corrupted characters, but the machine doesn't lock up.
XFree86 4.3.0 doesn't support Radeon 9600XT officially, however now that xorg-x11 is replacing XFree86 in Fedora Core 2, can you please upgrade to xorg-x11 and confirm if this problem is still present? Thanks in advance.
xorg-x11 works in 32bit and in 64bit mode on my x86_64. But it is quite slow, I think this line is indicating why: (WW) RADEON(0): Failed to set up write-combining range (0xd0000000,0x8000000)
Karsten: So this card is working now in FC2test3 (albeit slow)? If so, we can close this report as RAWHIDE. You can file a separate bug for the MTRR related issue if you'd like that to be tracked also. The X server MTRR code doesn't work very well on AMD64 architecture and I believe it needs complete rewrite. Setting status to MODIFIED. Please change to ASSIGNED if problem described in initial report still persists in FC2test3, or change to RAWHIDE if it is now resolved in rawhide. Thanks in advance.