Hello all, I used to see very similar behaviour on my Sandy Bridge box. Interestingly I'm also using an Asrock Board (H67M-GE). That indicates that it might be a hardware issue. I flashed the latest BIOS version provided bei Asrock (V 2.10, used to have 1.40 or 1.50 before, don't remember exactly) and the issue went away for me, hasn't ever re- appeared since.
If I remember correctly, the BIOS changelog mentioned something about fixing the voltage settings of the GPU for the change to version 1.60. Asrock's documentation is rather poor unfortunately, but searching the web for "h67m-ge igpu voltage" yields several hits with descriptions of the BIOS update: "Modify default setting for IGPU voltage." As the bug seems to appear only with RC6 enabled there might be a connection here. If there's no new BIOS available for other boards, manually changing IGPU in the BIOS/UEFI might also work around the issue maybe. Maybe that helps someone. Regards, Stefan -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1020733 Title: [sandybridge-m-gt2+] GPU lockup IPEHR: 0x78170003 To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1020733/+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
