I believe I have successfully solved the bug now by reading all the comments again and found a solution in #96. I added
echo 0 >/proc/sys/kernel/nmi_watchdog before "exit 0" in the file etc/rc.local. I have used the system a few hours/days/re-starts/hibernates since and no bug has occured by now. My working configuration is: - Ubuntu Studio 12.04 fresh install - Dell Studio 1558 with ATI Radeon HD 4500. - Gnome Shell - Solution from comment #96 -- 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/1007765 Title: brightness adjusting crashes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1007765/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
