** Description changed: Binary package hint: xserver-xorg-video-intel xserver-xorg-video-intel does not have support for Sandybridge Xv video acceleration, but it advertises support and attempting to use it is causing a system hang. Given that these devices will be released before 11.04 is released, I believe it would be in our best interest to disable Xv for Maverick for a better user experience. The change only affects these specific devices (covered by the IS_GEN6 macro) so the regression potential is extremely low. - Upstream addressed this issue in this commit: http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=8784c4f5a1524fb979b00c7ce7981cbc1dcf0ec0 author Chris Wilson <ch...@chris-wilson.co.uk> 2010-10-01 20:40:36 (GMT) committer Chris Wilson <ch...@chris-wilson.co.uk> 2010-10-01 20:45:15 (GMT) commit 8784c4f5a1524fb979b00c7ce7981cbc1dcf0ec0 tree d73f10e7631195c2ecb70d87aa7f3ba00da93e09 parent 345c963e443ec325f1ff530512a356ddb318ff70 video: Disable TextureAdaptor for Sandybridge The acceleration code does not yet exist, so we try to use gen4 shaders which hangs the chip and makes everybody upset. Disable it until such a time as support is written for Sandybridge XVideo. Reported-by: Matthias Hopf <mh...@suse.de> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30500 Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> + Patch will follow soon and has been tested by me on 2 sandybridge + machines to verify that desktop applications that autodetect Xv support + no longer crash the system (cheese, totem visualizations, rhythmbox + visualizer). - Patch will follow soon and has been tested by me on 2 sandybridge machines to verify that desktop applications that autodetect Xv support no longer crash the system (cheese, totem visualizations, rhythmbox visualizer). + + --- SRU JUSTIFICATION NOTES --- + + IMPACT: Sandy Bridge machines (with generation 6 intel GPUs) do not have + code in the driver to handle Xv acceleration, but due to the way its + coded it advertises that it works and attempts to use a generic GM45 + generation code path for it which hangs the system 100% of the time. + This confuses gstreamer which does auto detection and every app that + plays back video with it will hang the system unless Xv is forcibly + disabled. + + RESOLUTION: Disable Xv only on this generation of devices by adding an + XVideo option to the intel driver that only disables it on generation 6 + devices. The option was universally enabled previously. + + TEST CASE: + 1) Boot ubuntu maverick on a Sandy Bridge machine + 2) Launch gstreamer-properties + 3) Go to the video tab, under default output press "Test" + 4) System hangs without this fix. Switching the output to "X Window System (No Xv)" works correctly. + + REGRESSION POTENTIAL: Extremely low, this only changes the behavior for + devices that match the IS_GEN6 macro which only contains Sandy Bridge + devices. + + SRU PATCH PROPOSALS: + https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/654876/+attachment/1692570/+files/xserver-xorg-video-intel_2.12.0-1ubuntu5.1.debdiff
** Description changed: + --- SRU JUSTIFICATION NOTES --- + + IMPACT: Sandy Bridge machines (with generation 6 intel GPUs) do not have + code in the driver to handle Xv acceleration, but due to the way its + coded it advertises that it works and attempts to use a generic GM45 + generation code path for it which hangs the system 100% of the time. + This confuses gstreamer which does auto detection and every app that + plays back video with it will hang the system unless Xv is forcibly + disabled. + + RESOLUTION: Disable Xv only on this generation of devices by adding an + XVideo option to the intel driver that only disables it on generation 6 + devices. The option was universally enabled previously. + + TEST CASE: + 1) Boot ubuntu maverick on a Sandy Bridge machine + 2) Launch gstreamer-properties + 3) Go to the video tab, under default output press "Test" + 4) System hangs without this fix. Switching the output to "X Window System (No Xv)" works correctly. + + REGRESSION POTENTIAL: Extremely low, this only changes the behavior for + devices that match the IS_GEN6 macro which only contains Sandy Bridge + devices. + + SRU PATCH PROPOSALS: + https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/654876/+attachment/1692570/+files/xserver-xorg-video-intel_2.12.0-1ubuntu5.1.debdiff + + --- ORIGINAL DESCRIPTION --- + Binary package hint: xserver-xorg-video-intel xserver-xorg-video-intel does not have support for Sandybridge Xv video acceleration, but it advertises support and attempting to use it is causing a system hang. Given that these devices will be released before 11.04 is released, I believe it would be in our best interest to disable Xv for Maverick for a better user experience. The change only affects these specific devices (covered by the IS_GEN6 macro) so the regression potential is extremely low. Upstream addressed this issue in this commit: http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=8784c4f5a1524fb979b00c7ce7981cbc1dcf0ec0 author Chris Wilson <ch...@chris-wilson.co.uk> 2010-10-01 20:40:36 (GMT) committer Chris Wilson <ch...@chris-wilson.co.uk> 2010-10-01 20:45:15 (GMT) commit 8784c4f5a1524fb979b00c7ce7981cbc1dcf0ec0 tree d73f10e7631195c2ecb70d87aa7f3ba00da93e09 parent 345c963e443ec325f1ff530512a356ddb318ff70 video: Disable TextureAdaptor for Sandybridge The acceleration code does not yet exist, so we try to use gen4 shaders which hangs the chip and makes everybody upset. Disable it until such a time as support is written for Sandybridge XVideo. Reported-by: Matthias Hopf <mh...@suse.de> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30500 Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> Patch will follow soon and has been tested by me on 2 sandybridge machines to verify that desktop applications that autodetect Xv support no longer crash the system (cheese, totem visualizations, rhythmbox visualizer). - - - --- SRU JUSTIFICATION NOTES --- - - IMPACT: Sandy Bridge machines (with generation 6 intel GPUs) do not have - code in the driver to handle Xv acceleration, but due to the way its - coded it advertises that it works and attempts to use a generic GM45 - generation code path for it which hangs the system 100% of the time. - This confuses gstreamer which does auto detection and every app that - plays back video with it will hang the system unless Xv is forcibly - disabled. - - RESOLUTION: Disable Xv only on this generation of devices by adding an - XVideo option to the intel driver that only disables it on generation 6 - devices. The option was universally enabled previously. - - TEST CASE: - 1) Boot ubuntu maverick on a Sandy Bridge machine - 2) Launch gstreamer-properties - 3) Go to the video tab, under default output press "Test" - 4) System hangs without this fix. Switching the output to "X Window System (No Xv)" works correctly. - - REGRESSION POTENTIAL: Extremely low, this only changes the behavior for - devices that match the IS_GEN6 macro which only contains Sandy Bridge - devices. - - SRU PATCH PROPOSALS: - https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/654876/+attachment/1692570/+files/xserver-xorg-video-intel_2.12.0-1ubuntu5.1.debdiff -- [Sandybridge] Attempting to use Xv textured video hangs the system. https://bugs.launchpad.net/bugs/654876 You received this bug notification because you are a member of Ubuntu-X, which is the registrant for xf86-video-intel. _______________________________________________ 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
