Same bug here. IBM T40 with ATI RADEON MOBILITY 7500 using radeon driver. Screen looks garbled and unusable in GDM, workaround with manual setting of resolution to 1024x768 in Gnome solves the problem for user (not for global GDM settings). Disabling modesetting with "options radeon modeset=1" in /etc/modprobe.d/radeon-kms.conf solves the problem, but performance drops to unusable level. Changes to xorg.conf forcing modelines doesn't solve problem, Ubuntu still recognizes screen as 16:9.
** Attachment added: "xrandr log" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/641525/+attachment/1626113/+files/xrandr.log -- Screen with 4:3 ratio incorrectly detected as having 16:9 ratio https://bugs.launchpad.net/bugs/641525 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
