Bug 24916

Forwarding a bug report from ubuntu user ubuntu@szantocsalad.hu:
  https://bugs.launchpad.net/bugs/470422

[Problem]
Two identical IIyama PLE511S monitors are connected to the computer with Q45 chipset. One is connected to the VGA (D-sub) output and uses the D-sub input on the monitor. The other is using the HDMI output on the computer and DVI input on the monitor. The native resolution of the monitors are 1600x1200, but this seems to only be available on the VGA connected one. The computer reads the EDID just fine from both monitors and they both look sane at first sight. parse-edid gives a mode with 1600x1200 resolution. This is with KMS. The user reports unrelated problems that makes it impossible to test with UMS.

I find it a bit strange that the HDMI-DVI connected monitor is reported as HDMI instead of DVI, but that may be normal [1]. 

The problem persists if the VGA connected monitor is disconnected. Under Ubuntu 9.04 (with UMS and intel driver 2.6.3 + some patches) the monitor was assigned a resolution of 1600x1200.

[1]: http://www.hdmi.org/download/HDMISpecification13a.pdf section 8.3.3 says that when there are no EDID extension blocks it should be treated as a DVI.

[Original]

Binary package hint: xserver-xorg-video-intel

After installing ubuntu 9.10 I cannot set the resolution of my 2nd monitor higher then 1280 x 1024. Previously both of my monitors was working on 1600 x 1024. I have an Integrated Intel Graphics Media Accelerator 4500 in a HP Compaq dc7900 Ultra-slim Desktop PC (http://h10010.www1.hp.com/wwpc/us/en/sm/WF06a/12454-12454-64287-321860-3328898-3785404.html)

This is a 5 years old monitor with DVI and D-sub inputs. The HDMI output of the computer is connected to the DVI input of the monitor (and the d-sub to the d-sub on the other monitor)

ProblemType: Bug
Architecture: amd64
Date: Mon Nov  2 10:52:09 2009
DistroRelease: Ubuntu 9.10
MachineType: Hewlett-Packard HP Compaq dc7900 Ultra-Slim Desktop
Package: xserver-xorg-video-intel 2:2.9.0-1ubuntu2
ProcCmdLine: root=UUID=c5c9baa8-4906-479d-8c3d-caa3202d1199 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu7
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.31-14-generic x86_64
dmi.bios.date: 03/05/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786G1 v01.16
dmi.board.asset.tag: CZC9363FV9
dmi.board.name: 3033h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC9363FV9
dmi.chassis.type: 15
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786G1v01.16:bd03/05/2009:svnHewlett-Packard:pnHPCompaqdc7900Ultra-SlimDesktop:pvr:rvnHewlett-Packard:rn3033h:rvr:cvnHewlett-Packard:ct15:cvr:
dmi.product.name: HP Compaq dc7900 Ultra-Slim Desktop
dmi.sys.vendor: Hewlett-Packard
fglrx: Not loaded
system:
 distro:             Ubuntu
 architecture:       x86_64kernel:             2.6.31-14-generic