Public bug reported: this has been a long term problem with X11. I think it dates back to 6.06.
laptop: compaq presario 1700t lspci reports video as: 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M6 LY install sets up video as 1024x768 which works ok but is very fuzzy because of mismatch between native lcd resolution and displayed resolution. to trigger the problem, system->preferences->screen resolution. change resolution to 1400x1040. display changes to higher resolution and has random broken blocks of screen data. I have screen capture if it is any help ProblemType: Bug Architecture: i386 Date: Wed Mar 14 21:33:24 2007 DistroRelease: Ubuntu 7.04 Uname: Linux slappy 2.6.20-10-generic #2 SMP Mon Mar 12 00:02:49 UTC 2007 i686 GNU/Linux ** Affects: Ubuntu Importance: Undecided Status: Unconfirmed -- X11 does not support laptop lcd native resolution https://launchpad.net/bugs/92408 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs