A quick web search suggests that the laptop in question has a ATI Mobility Radeon 4x AGP graphics chipset in it. I can confirm that a similar rendering error occurs on a Dell Precision WorkStation 340 which has a dualhead ATi card reported by lspci as: Radeon RV100 QY [Radeon 7000/VE].
I am not running the ATi binary drivers, so I suspect this is a bug in the xorg radeon driver. ** Changed in: Ubuntu Sourcepackagename: None => xserver-xorg-driver-ati Status: Unconfirmed => Confirmed -- On all screen buttons, I have lines/ dots in the dialog boxes https://launchpad.net/bugs/50819 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs