I have the same problem. This is a fresh install of Ubuntu 9.04 on a Optiplex Gx760.
If visual effects are turned off the problem disappears. Output od lspci -vvnn is attached. ** Attachment added: "output" http://launchpadlibrarian.net/26457546/output -- [Q45] Display corruption on Intel chipset https://bugs.launchpad.net/bugs/362919 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs