Since reporting this problem I looked more closely at syslog. It looks like the ASIC hang was caused by my attemts to restart the system. In particular, it happens after "SysRq : SAK".
The real problem is a few lines earlier: [fglrx:firegl_lock_free] *ERROR* lock was not held by 12! (*lock=0x80000001) [fglrx:firegl_unlock] *ERROR* firegl_lock_free failed! Possibly related to bug 118605 ? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to fglrx-installer in Ubuntu. https://bugs.launchpad.net/bugs/883803 Title: [fglrx] ASIC hang happened To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/883803/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
