From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020830 Description of problem: After upgrading from Red Hat 7.3 to 8.0 (during which process the X server seemed to work fine), I discovered that X failed to work: when running just "X", the monitor would switch modes but remain at only a black screen. Caps Lock would be useable for a few seconds, then the Caps and Scroll lock keys would start blinking, at which point the only working keyboard function appeared to be "Alt-SysRq-B". Booting into the 2.4.18-0.13 kernel left from the 7.3 install with no other changes was sufficient to fix the problem. I have not tested this system with a stock 2.4.18 or 2.4.19 kernel. At one point while attempting to get my computer working I saw part of a kernel oops (from 2.4.18-14) which mentioned the agpgart module in the stack trace, but the computer froze in the middle of the oops. I don't know how specific to my hardware this problem is. I am running a Radeon 7500 on a Via KT266A based motherboard with a 1400Mhz Athlon. "mem=nopentium" is set in the kernel options. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Run the command "X" (or boot into runlevel 5) on a computer with a Radeon 7500 video card 2. 3. Additional info:
please don't set mem=nopentium