When option "AGPFastWrite" is set to "true" - X crashes just after "startx". Option "AGPMode" can be set to "1", "2" or "4" and it works stable. When it it set to "8" - glxgears crashes system. My card is Radeon 9800 Pro: (--) PCI:*(1:0:0) ATI Technologies Inc Radeon R350 [Radeon 9800 Pro] rev 0, Mem @ 0xe8000000/27, 0xfbe00000/16, I/O @ 0xe000/8, BIOS @ 0xfbd00000/17 (--) PCI: (1:0:1) ATI Technologies Inc Radeon R350 [Radeon 9800 Pro] (Secondary) rev 0, Mem @ 0xf0000000/27, 0xfbf00000/16 (...) (--) Chipset ATI Radeon 9800PRO NH (AGP) found (...) (--) RADEON(0): Chipset: "ATI Radeon 9800PRO NH (AGP)" (ChipID = 0x4e48) OpenGL renderer string: Mesa DRI R300 20060815 AGP 4x x86/MMX+/3DNow!+/SSE2 TCL OpenGL version string: 1.3 Mesa 6.5.2 My motherboard is Asus K8V-X SE, CPU is Athlon 64 3000+, kernel 2.6.18.4.
yes, it does. (that's why it's not enabled by default.)
There is already a bug for fast writes, #6001. It never works (with radeons at least), and noone really knows why. As for AGP8x, should work. However, since it seems to almost work for you and only crashes when starting a 3d app (so potentially lots of agp traffic happens), sounds like a hw issue to me. It is possible the windows driver hacks this up with changing agp drive strength and other nasty settings (if you tried it there and it worked).
I have the same Motherboard, CPU and a Radeon 9600 card. I also get crash with Fast Write on. It crashes when using Windows as well. I believe this is a known issue with motherboard too.
I found information about AGP problem on this board here: http://ubuntuforums.org/showthread.php?t=302902
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.