Changing semaphores setting doesn't help here (Fujitsu S751 with 8086:0126 graphics controller).
I still get reproducable freezes - for example when working with libreoffice it appears always after only a few actions (for example if I do some copy+paste stuff). The only change is that instead complaining about missed IRQ it is now complaining about stuck semaphore... syslog entry with i915.semaphores=0: May 14 22:06:48 silk kernel: [ 1665.383643] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 443994, at 443994], missed IRQ? May 14 22:07:51 silk kernel: [ 1727.982616] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 465770, at 465770], missed IRQ? and with i915.semaphores=1: May 16 20:56:32 silk kernel: [25529.161099] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 16 20:56:32 silk kernel: [25529.161124] [drm:kick_ring] *ERROR* Kicking stuck semaphore on render ring I tried 2.6.38-9.43 from natty as well as 2.6.39-0.5~20110427 from ppa :kernel-ppa/ppa but no difference. -- 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/761065 Title: [Sandybridge] Spurious "*ERROR* Hangcheck timer elapsed... blt ring idle" messages in dmesg when using compiz _______________________________________________ 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
