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[tony addyman <870813@xxxxxxxxxxxxxxxxxx>]

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.

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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

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