Description of problem: I've installed FC4 (and all current package updates) on a Dell Optiplex GX620. This machine has a Radeon X600 card installed in the PEG slot. It has 2GB of DDR2 PC2-5300 memory (4 512MB DIMMs). Since it's an Intel EM64T, I installed the x86_64 edition of FC4. (I initially encountered problems while trying to use the DVI output with a Dell LCD Display, but that's a known bug with the default mode timings. Once I switched to the VGA connector, I was fine.) The specific problem I am having now is that starting X locks the entire machine, hard. And when I say "lock", I mean "the machine even stops responding to ICMP ECHO requests". Curiously, though, I get as far as the Fedora splash screen before it locks. Every attempt to start X has locked in this manner--even running system-config-display. The machine is otherwise fast and rock-solid stable; it's been up and running for a week or so without any problems whatsoever. The radeon(4) man page states that the Radeon X600 is supported. From the Xorg.0.log, the X server has no difficulty recognizing both the card and the monitor attached to it. I can detect no other problems with the machine. I don't understand why it consistently locks. Version-Release number of selected component (if applicable): xorg-x11-6.8.2-37.FC4.49.2 kernel-smp-2.6.13-1.1532_FC4 How reproducible: The easiest way to reproduce the problem is to boot the x86_64 installation CD/DVD in graphical install mode. After anaconda starts the X server, you'll get the all-white screen with the mouse pointer on it. It'll lock after about 5 seconds or so. Actual results: The entire system locks. Expected results: Success. Additional info: I've also tested these distributions: FC4 (i386) RHEL 4AS U1 (x86_64) The X server locks in exactly the same manner.
Created attachment 120661 [details] X server log from a session that locks
Based on bug #138539, I tried disabling hyperthreading and booting with the non-SMP kernel. It still locks. I then tried disabling DRI (still using the non-SMP kernel without hyperthreading). It still locks.
FWIW, I have the same problem with a GX620 running RHEL4U2. I reported this and it's known to the world as bug #176826.
Please report this issue to X.Org developers by filing a bug report in the X.Org bugzilla located at http://bugs.freedesktop.org in the "xorg" component. Once you've filed your bug report to X.Org, if you paste the new bug URL here, Red Hat will continue to track the issue in the centralized X.Org bug tracker, and will review any bug fixes that become available for consideration in future updates. Setting status to "NEEDINFO_REPORTER", awaiting X.Org bug URL for tracking.
Closing bug due to lack of information, and lack of feedback/response. If the issue is still present/relevent, please respond to the above engineering queries and reopen and we will re-review the issue. Setting status to "CANTFIX" (lack of response)
I was (finally) able to get back to this issue today. Yes, the Radeon driver still wedges the entire machine. This is with kernel-2.6.15-1.1831_FC4 and xorg-x11-6.8.2-37.FC4.49.2. Here's the bug I've opened with freedesktop.org: https://bugs.freedesktop.org/show_bug.cgi?id=5853 (I've also added an external reference to this bug report.)
Thanks, tracking in the X.Org tracker now.