Same problem here with Ubuntu 12.04 with latest updates and a Radeon HD3600:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV635 [Radeon HD 3650/3750/4570/4580] Tried the nomodeset trick mentioned above but it did not solve the issue. The problem occurs both with the open source driver and fglrx. Installing manually fglrx legacy drivers from AMD site seems to reduce the freezes but it still hangs with the firegl_sig_notifier crash from time to time. If I first logout and then shutdown it seems to avoid the freeze (similar to the trick above of killing xorg before shutting donw). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to fglrx-installer in Ubuntu. https://bugs.launchpad.net/bugs/750437 Title: fglrx hard lockup on shutdown Status in “fglrx-installer” package in Ubuntu: Confirmed Bug description: First reported here: http://ubuntuforums.org/showthread.php?t=1720894 fglrx is preventing clean shut downs. Hardware is an ASUS E-35M1-I Deluxe, ie. the Fusion APU, and I'm running Ubuntu Natty AMD64, linux- generic 2.6.38.7.21, fglrx 2:8.840-0ubuntu1, xserver-xorg 1:7.6+4ubuntu1. Everything else in the driver is working perfectly, ie. hardware accelerated video and 3D, etc. Executing "service slim stop" or "service gdm stop" while running fglrx, the whole system would sometimes hang, needing a hard reset. More often I'll just get "slim is not responding to TERM signals". slim.log shows "unexpected signal 15", but slim and X are still running. No errors in the Xorg.0.log file. Slim no longer responds to input when switching to view the login screen, perhaps because it's trying to shut down. Trying to kill slim manually has no effect, probably because it's already trying to shut down, but fglrx and/or X won't let it. This is probably what's preventing a clean shut down. "kill -9" on slim and X do kill them, but certain kernel resources are clearly not reclaimed because switching to the X console, ie. alt-F7, produce a black screen and I can't get back to a regular tty console. System still responds to ctl-alt-delete reboot though (sometimes). Shutdown times out and the disks are forcibly unmounted, forcing a disk check on the next boot. No adverse messages in the logs that I can see (Xorg.0.log, slim.log, syslog, kern.log, etc.). The open source radeon driver does not have these issues. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/750437/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
