[Bug 366270] Re: [i945] [Xubuntu, i945] wrong screen resolution after upgrade to Jaunty

[Bryce Harrington]

** Description changed:

  Binary package hint: xorg
  
  After upgrade to Jaunty, Xubuntu starts with a wrong resolution on a
  laptop with external monitor.
  
  hardware: HP Compaq nc2400, with i945 graphics card + Dell 1680x1050
  screen, connected via docking station (so the laptop lid is closed all
  the time)
  
  software: Xubuntu 9.04, i386; vanilla (untouched) xorg.conf
  
  behaviour with intrepid: gdm uses 1024x768, but after login the screen switches to 1680x1050
  behaviour with jaunty: screen stays in 1024x768 even after login
  
  other observations:
  - Settings->Display shows only one screen (Screen 1), but Settings->Desktop sometimes shows settings for both VGA and LVDS screens.
  - I can choose the 1680x1050 resolution in Settings->Display and it works without problems.
  - In Settings->Desktop, I have selected a different background pictures for VGA and LVDS. Then I see that after login the desktop starts with a background of the LVDS screen, not the VGA background. This is even more obvious if I add "xrandr --output VGA --auto" to gdm/Default - then I get the correct resolution (1680x1050), but I get the LVDS desktop drawn over the VGA one, i.e. there is the correct VGA 1680x1050 background picture, but over it there is drawn the smaller LVDS background picture (placed in the top-left corner of the screen). Looks xorg or xrand draws both screen on top of each other?  .. could be a xrandr bug?
  - I could not report this as a xrand bug using 'ubuntu-bug -p xrandr', as this results in a message that the package does not exist - which is wrong, as I can ran 'xrandr' command.
  - Using the internal screen only (taking the laptop out of the docking station) works fine, using the correct resolution (1280x800).
  - Probably not important, but under intrepid I had problem with the intel driver, with the system crash with a message about underrun on pipeB .. about once a day, with no reason I could see. I haven't yet seen it on Jaunty, but I have had it only a couple of hours..
  - I installed grandr and in the Layout screen, both VGA and LVDS are in the middle box and neither can be moved anywhere. Also the "clone / extend" choice is grayed out - but that is probably correct, as the laptop lid is closed?
  
  ProblemType: Bug
  Architecture: i386
  DistroRelease: Ubuntu 9.04
  Package: xorg 1:7.4~5ubuntu18
  ProcEnviron:
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcVersion: Linux version 2.6.28-11-generic (buildd at palmer) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009
  SourcePackage: xorg
  Uname: Linux 2.6.28-11-generic i686
+ 
+ [lspci]
+ 00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub [8086:27a0] (rev 03)
+     	Subsystem: Hewlett-Packard Company Device [103c:30a1]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03)
+     	Subsystem: Hewlett-Packard Company Device [103c:30a1]

-- 
[i945] [Xubuntu, i945] wrong screen resolution after upgrade to Jaunty
https://bugs.launchpad.net/bugs/366270
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