After further work I have discovered that the EDID data appears to be corrupted. As there is no easy way to set the desired resolution (that has been reported as a bug by others), I have set the resolution using /etc/X11/xorg.conf. This works - despite what you may read on the Web - even though I am using Intel graphics and that is using KMS. I tried setting video=VGA1:1280x1024 on the kernel command line, but that was ineffective.
You probably want to ignore this bug. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/870813 Title: Failure to detect monitor and set correct resolution Status in “gnome-control-center” package in Ubuntu: New Bug description: The Sharp 19" analogue monitor is connected to Intel "sandy-bridge" graphics using DVI-I. It is detected as "Unknown" and the maximum resolution is 1024x768. The same monitor connected using D-Sub to a different PC (with Intel graphics) is detected correctly under 10.04, 10.10, 11.04 and 11.10. A Liyama 19" monitor is correctly detected on this second PC using 10.04, and is "Unknown" under 11.04. However, the correct 1280x1024 resolution is set. The problem appears to be associated with either the "sandy-bridge" graphics and/or the need to a DVI-I connector, as the motherboard has no D-Sub connector. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: gnome-control-center 1:3.2.0-0ubuntu6 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic x86_64 ApportVersion: 1.23-0ubuntu2 Architecture: amd64 Date: Sat Oct 8 16:51:48 2011 ExecutablePath: /usr/bin/gnome-control-center InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901) ProcEnviron: SHELL=/bin/bash PATH=(custom, user) LANGUAGE=en_GB:en LANG=en_GB.UTF-8 SourcePackage: gnome-control-center UpgradeStatus: Upgraded to oneiric on 2011-10-02 (6 days ago) usr_lib_gnome-control-center: deja-dup 20.0-0ubuntu3 gnome-bluetooth 3.2.0-0ubuntu1 indicator-datetime 0.3.0-0ubuntu3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/870813/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp