Have this issue on LMDE with legacy fglrx (8.97.100.3) on HD4950 and firefox 14.0.1. Occasional hangs, occasional X restarts.
Kern.log: Sep 24 11:02:46 kraken kernel: [10824.115071] [fglrx] IRQ 45 Disabled Sep 24 11:02:46 kraken mdm[3589]: WARNING: mdm_slave_xioerror_handler: Fatal X error - Restarting :0 -- 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/938981 Title: Xorg freeze when starting Firefox To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/938981/+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