Upgraded to from Ubuntu 11.10 to 12.04 on my HP 6710b laptop (Intel integrated graphics, naturally) and I was immediately hit by this upon opening the application switcher with Alt-Tab (I don't use the default application switcher, ccsm reminds me that the one I use is the Static Application Switcher; by the way, I use Unity and haven't tried Unity 2D). As soon as the application switcher opened, the first time all the squares (window previews and application icons) were black and a couple of seconds later the display lost all input. The second and third times I can't remember what happened with those squares. The fourth time (just now, intentionally) they all appeared as white squares with RGB rainbow fuzz around the edges. In all cases (whether the switcher was shown briefly or Alt-Tab held down), the display panel lost input a couple of seconds later.
Also in all cases Alt+SysRq+REISUB worked for me (it has been a pleasantly long time since I have had recourse to the sequence, sadly now broken by this), but the graphics driver was completely dead (so no Ctrl+Alt+F1 terminal, etc.). This is to me (to put it mildly) rather an important issue. I've already caused it twice more intentionally, once accidentally and *almost* done it by accident a couple of times in this present session; fortunately I have the popup window delay set to 0.05, so it doesn't immediately pop up the switcher window which makes it die. I'll try the default application switcher after submitting this comment and see what happens with it. If you want more information from me, just ask and I'll provide it*. (* Conditions apply. Of course.) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/980017 Title: [i965gm] GPU lockup render.IPEHR: 0x02000004 To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/980017/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
