most likely due to the mga driver not supporting randr-1.2. You could try building the experimental driver from debian-experimental (1.9.100..)
http://packages.debian.org/source/experimental/xserver-xorg-video-mga ** Changed in: xserver-xorg-video-mga (Ubuntu) Sourcepackagename: xorg => xserver-xorg-video-mga -- 320x240 screen mode not supported https://bugs.launchpad.net/bugs/183913 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