Robert, since this is reproducible for us on a stock Natty install, I've generated an apport report on Natty, and I'm attaching it here.
Steps to reproduce: 1. Configure T420s in the BIOS to use Intel integrated graphics. 2. Install Natty with the Ubuntu desktop task 3. After install, GDM and X will start normally. 4. Shut down the laptop 5. Power on the laptop. When X starts, the display is corrupted as David explains above--2/3 of the screen is black and 1/3 is black and white striped. At this point, you can fix the display by closing the lid to suspend and then opening the lid again. I should point out that not all T420s Thinkpads exhibit this problem. We have some, type 4174AY9, that have this problem. But also I have a 4174A11 model that doesn't have this problem. ** Attachment added: "812638.apport" https://bugs.launchpad.net/ubuntu/+source/linux-lts-backport-natty/+bug/812638/+attachment/2267262/+files/812638.apport -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/812638 Title: video problems with Thinkpad T420s integrated intel graphics To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-backport-natty/+bug/812638/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
