I tried to get a backtrace via SSH, but no luck. I can start the gdb session and attach to the Xorg process, but the moment the bug occurs (screen freeze), I can't send any signals through my SSH session either. A few times I had to do a hard-reset because Magic SysReq was not recognized anymore (REISUB sequence).
There were two things that changed when attaching a gdb session, aside from REISUB not working: 1. I got a few frames from the game (meaning, my ship spawned and everything went fine for ~3 seconds) 2. the kern.log file had a bunch of this inside of it: [ 745.250679] radeon 0000:02:00.0: GPU lockup (current fence id 0x000000000000f5a5 last fence id 0x000000000000f5b2 on ring 0) [ 745.749923] radeon 0000:02:00.0: ring 0 stalled for more than 89868msec [ 745.749932] radeon 0000:02:00.0: GPU lockup (current fence id 0x000000000000f5a5 last fence id 0x000000000000f5b2 on ring 0) [ 746.249238] radeon 0000:02:00.0: ring 0 stalled for more than 90368msec [ 746.249247] radeon 0000:02:00.0: GPU lockup (current fence id 0x000000000000f5a5 last fence id 0x000000000000f5b2 on ring 0) [ 746.748547] radeon 0000:02:00.0: ring 0 stalled for more than 90868msec [ 746.748556] radeon 0000:02:00.0: GPU lockup (current fence id 0x000000000000f5a5 last fence id 0x000000000000f5b2 on ring 0) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1438303 Title: Radeon driver freezes GPU (reproducible) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1438303/+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
