** Description changed: + [IMPACT] + + renders IVB GT1 systems basically inoperable, with massive distortion on + screen + + [TESTCASE] + + boot 12.04 on a IVB GT1 (HD2500) system + + [Regression Potential] + + None, the changes are oneliners to reduce the max thread count on IVB + GT1, which matches the current (internal?) intel specs + + -- + I have a Intel 3570 CPU (Ivy Bridge) with built in 2500 graphics [1]. There is a lot of artifacts on screen, both in lightdm and in unity. There more or less impossibly to read any text on screen. I have tested quantal and the packages from ppa:xorg-edgers/ppa without any improvement. I had high hopes what xf86-video-intel 2.20.2 was the solution because it contains ivy bridge fixes, but still no result. [2] Note (link 2): "For the last 9 months, since 2.16.901, we have been shipping a driver that does not work on IvyBridge GT1 systems (HD2500 graphics); we were telling the GPU to use an invalid number of threads for the pixel shader and this in turned caused the GPU to hang." With a plain install of precise I only see artifacts, but X hangs (hard) when I'm using quantal or the packages from ppa:xorg-edgers/ppa My current ugly workaround is to remove the intel driver and let X fall back to something else, not a perfect solution but the system is usable. [1] http://ark.intel.com/products/65702/Intel-Core-i5-3570-Processor-%286M-Cache-3_40-GHz%29 [2] http://lists.freedesktop.org/archives/xorg/2012-July/054947.html Currently the system is running 12.04 with ppa ppa:xorg-edgers/ppa. I have xserver-xorg-video-intel 2:2.20.2+git20120731.fd3a1236-0ubuntu0sarvatt~precise installed, the system hangs hard after I log in, or sometimes the GPU hangs and the screen goes to power save. The system is not in use and I'm free to install and test whatever version and/or packages you want me to install.
** Description changed: [IMPACT] renders IVB GT1 systems basically inoperable, with massive distortion on screen + + also affects systems on the certification queue [TESTCASE] boot 12.04 on a IVB GT1 (HD2500) system [Regression Potential] None, the changes are oneliners to reduce the max thread count on IVB GT1, which matches the current (internal?) intel specs -- I have a Intel 3570 CPU (Ivy Bridge) with built in 2500 graphics [1]. There is a lot of artifacts on screen, both in lightdm and in unity. There more or less impossibly to read any text on screen. I have tested quantal and the packages from ppa:xorg-edgers/ppa without any improvement. I had high hopes what xf86-video-intel 2.20.2 was the solution because it contains ivy bridge fixes, but still no result. [2] Note (link 2): "For the last 9 months, since 2.16.901, we have been shipping a driver that does not work on IvyBridge GT1 systems (HD2500 graphics); we were telling the GPU to use an invalid number of threads for the pixel shader and this in turned caused the GPU to hang." With a plain install of precise I only see artifacts, but X hangs (hard) when I'm using quantal or the packages from ppa:xorg-edgers/ppa My current ugly workaround is to remove the intel driver and let X fall back to something else, not a perfect solution but the system is usable. [1] http://ark.intel.com/products/65702/Intel-Core-i5-3570-Processor-%286M-Cache-3_40-GHz%29 [2] http://lists.freedesktop.org/archives/xorg/2012-July/054947.html Currently the system is running 12.04 with ppa ppa:xorg-edgers/ppa. I have xserver-xorg-video-intel 2:2.20.2+git20120731.fd3a1236-0ubuntu0sarvatt~precise installed, the system hangs hard after I log in, or sometimes the GPU hangs and the screen goes to power save. The system is not in use and I'm free to install and test whatever version and/or packages you want me to install. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1031784 Title: Artifacts on screen with ivy bridge To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1031784/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
