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Created attachment 529941 [details] /proc/cpuinfo for the affected machine Description of problem: The system panics on boot with kernel-3.1.0-0.rc9.git0.3.fc17.x86_64 kernel-3.1.0-0.rc10.git0.1.fc17.x86_64 kernel-3.1.0-0.rc9.git0.0.fc17.x86_64 is fine. Version-Release number of selected component (if applicable): How reproducible: Tried some 3 times with 3.1.0-0.rc10 and once with 3.1.0-0.rc9.git0.3 Steps to Reproduce: 1. 2. 3. Actual results: Panic Expected results: Additional info:
Do you have a backtrace?
Created attachment 530106 [details] /var/log/messages, but for 3.1.0-0.rc9.git0.0 As the kernel crashed before the splashscreen, no trace remains. I tried to reboot it several times, as the firmware on the motherboard is buggy and prone to hang (sorry, old machine; can't upgrade). First I tried to reboot remotely with 3.1.0-0.rc10.git0.1, and the machine didn't come up. When I physically got to the machine, the screen was black. I reset it, and tried again with 3.1.0-0.rc10.git0.1, panic. Then I tried 3.1.0-0.rc9.git0.3, again panic. 3.1.0-0.rc9.git0.0 worked, but shows a backtrace.
Created attachment 530481 [details] Backtrace Took a photograph of the screen and copied it by hand, checked accuracy comparing a printout of the text with the photograps.
Now it worked (after finding out that /boot/grub2/grub2.cfg was empty, and recreating by "grub2-mkconfig -o /boot/grub2/grub.cfg", then updated to kernel-3.2.0-0.rc0.git2.0.fc17.x86_64. Flawless boot. It seems it got snagged by grub --> grub2 transition. Sorry for the noise.