Description of problem: When running "glxinfo" on a remote machine over "ssh -Y", the local x86_64 system randomly freezes with a hard lockup requiring a reboot. No errors are displayed, and unfortunately no errors are present in the kernel or X server logs upon system startup either. The local system is AMD64 with an ATI Radeon 9800Pro AGP card. The kernel I am using is the F7 test kernel version 2.6.23.1-20.fc7 however I have had the problem occur under previous kernels as well. The current official Fedora kernel release for F7 has an AGP related bug that prevents AGP from working on this machine, so reproduction on the current official kernel update isn't possible on this system. At this point there isn't enough information to determine whether it is the X server, kernel, etc. at fault so I've just filed it against xorg-x11-server for the time being, until the problem can be narrowed down further. Version-Release number of selected component (if applicable): xorg-x11-server-Xorg-1.3.0.0-9.fc7 xorg-x11-drv-ati-6.6.3-4.fc7 mesa-libGL-6.5.2-13.fc7 kernel-2.6.23.1-20.fc7 How reproducible: Sometimes the glxinfo command completes successfully, and it shows that indirect rendering is available, however other times it just hard locks. It's more or less random in nature, however if I keep running glxinfo over and over again, eventually it will hang usually within 5 attempts. It hung every time the last 3 times I ran it. Putting glxinfo in an endless while loop on a remote host over "ssh -Y" should be a good way to attempt to reproduce. Steps to Reproduce: 1. start up X on x86_64 with Radeon 9800Pro AGP 2. "ssh -Y remotehost" 3. run glxinfo Actual results: Local system deadlock within 3 seconds if it does lockup. glxinfo usually only gets out one line of output before this happens. Additional info: Linux hammer 2.6.23.1-20.fc7 #1 SMP Wed Oct 31 20:31:48 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux I'm tracking Fedora 7 official kernel updates as well as koji built test kernels for other unrelated problems, so I'll provide updates here if any kernel updates cause changes in reproducability at all. When I get a chance, I'll attach some additional troubleshooting/debugging info as well.
Created attachment 246111 [details] X server log file from successful startup.
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I see this behavior on Fedora 24. I have Fedora 24 running inside of VirtualBox, if I remote desktop into the host, run Fedora 24 glxinfo will hang in the same manner (generates one line of output, ignores Ctrl+C Ctrl+Z, the program will not terminate).