-- Description of problem: I have had installed Fedora 12 a few days and now the system hangs during boot process. I have updated the system with the last packages and kernel and rebooted (and hibernated) without problems. Suddenly, the system has stopped working without an apparent problem. I have to boot the system in text mode (init 3) and I have to execute startx from command line to restart the graphic mode. If I execute "init 5" the system hangs again. /var/log/messages dies with this line when the system tries to boot in mode 5: [date] [time] [machine] kernel: [drm:drm_mode_rmfb] *ERROR* tried to remove a fb that we didn´t own I have tried to boot with another kernel version, but I have the same problem everytime. I don't know if there is a problem with the kernel or with a grapichs module that loads in init 5 and doesn't load in init 3. -- Version-Release number of selected component (if applicable): kernel-2.6.31.6-166 kernel-2.6.31.5-127 -- How reproducible: Boot the system in "normal" mode (init 5) and wait one or two minute to hang. I have experienced the same behavior after trying to install Fedora 12 from a USB disk. The system didn't boot until I didn't the image from a linux system. Create the image from a windows system had the same problems during boot.
There is a workaround that solves the problem but graphic boot gets lost. If you modify the kernel options and delete the "rhgb" option, the system boots perfectly. Clearly there is a problem with the modules that control the graphics or there is a problem with the graphic loader, I don't know. So this workaround can serve until someone finds the correct solution.
*** This bug has been marked as a duplicate of bug 539709 ***