gnome-display-properties dual monitor setup resolution incorrect-not full screen

[michael o'sullivan]

Binary package hint: gnome-control-center

Description: Ubuntu maverick (development branch)
Release: 10.10

gnome-control-center:
  Installed: 1:2.31.91-0ubuntu2
  Candidate: 1:2.31.91-0ubuntu2
  Version table:
 *** 1:2.31.91-0ubuntu2 0
        500 http://gb.archive.ubuntu.com/ubuntu/ maverick/main i386 Packages
        100 /var/lib/dpkg/status

Using a Lenovo 3000 C100 laptop
VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04)
Connected to an HP w19ev 19" Monitor

While setting up dual monitor output, setting both screens to same image works with full screen 1024x768 in both screens, but I can't set an independent 1440x900 in the HP monitor at the same time as having 1024x768 in the laptop monitor (i.e. when same image in all monitors box is unchecked). Instead of displaying a full screen at 1440x900, the 19" monitor displays a 1024x768 area, with surrounding black space.

Output from xrandr when this is attempted:
Screen 0: minimum 320 x 200, current 2048 x 768, maximum 4096 x 4096
VGA1 connected 1440x900+1024+0 (normal left inverted right x axis y axis) 410mm x 256mm
   1440x900 59.9*+ 75.0
   1280x960 60.0
   1152x864 75.0
   1024x768 75.1 70.1 60.0
   832x624 74.6
   800x600 72.2 75.0 60.3 56.2
   640x480 72.8 75.0 66.7 60.0
   720x400 70.1
LVDS1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 304mm x 228mm
   1024x768 60.0*+
   800x600 60.3 56.2
   640x480 59.9

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: gnome-control-center 1:2.31.91-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
Uname: Linux 2.6.35-20-generic i686
Architecture: i386
Date: Sat Sep 11 17:15:55 2010
ExecutablePath: /usr/bin/gnome-display-properties
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta i386 (20100901.1)
ProcEnviron:
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: gnome-control-center

[Dorgendubal (svenwerlen)]

Same problem with Ubuntu 11.04 (Unity).
Resolution 1024x768 is fine but higher resolutions result in surrounding black space (top and right). The top menu bar, however, seems to be rendered correctly. No problem under KDE.

[Dorgendubal (svenwerlen)]

See attached snapshot. Very strange behavior.

[Pedro Villavicencio (pedro)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue that you reported is one that should be reproducible with the live environment of the Desktop CD of the development release - Oneiric Ocelot. It would help us greatly if you could test with it so we can work on getting it fixed in the next release of Ubuntu. You can find out more about the development release at http://www.ubuntu.com/testing/ . Thanks again and we appreciate your help.

[Launchpad Janitor (janitor)]

[Expired for gnome-control-center (Ubuntu) because there has been no activity for 60 days.]