ubuntu-x-swat team mailing list archive

[Jack Wasey <ubuntu@xxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

I have two ViewSonic monitors a VA1912W (connected via a VGA cable) and
a VX2260WM connected by DVI.

With both monitors connected, the DVI monitor shows purple blues. I
cannot adjust the colors with any tools I have tried. Notably xgamma
only changes the first monitor. xdpyinfo shows one single "screen", and
it appears that xgamma isn't able to program individual monitors
comprising one screen.

Removing the VA1912W VGA monitor and rebooting shows that normal purples
are displayed.

The color problem can be seen by looking at:
http://www.lagom.nl/lcd-test/all_tests.php
and
http://www.lagom.nl/lcd-test/all_noprofile.php
which have test images with and without color profile information attached. I don't have the knowledge or time to work out whether all the desktop is wrong, or just images in firefox (and other color profile aware apps).

I've tried the monitor in sRGB and 6500K color modes with the second attached and no change.
To repeat, xgamma definitely cannot adjust the 2nd (in my case DVI attached) monitor.

I think this is a gamma problem related to a dual head set-up with
different monitors. Is X capable of programming different gamma to
multiple heads?

ProblemType: Bug
Architecture: amd64
Date: Mon Feb 15 14:56:30 2010
DistroRelease: Ubuntu 10.04
DkmsStatus:
 vboxdrv, 3.1.4, 2.6.32-13-generic, x86_64: installed 
 vboxnetflt, 3.1.4, 2.6.32-13-generic, x86_64: installed 
 vboxnetadp, 3.1.4, 2.6.32-13-generic, x86_64: installed
Package: xorg 1:7.5+1ubuntu2
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-13-generic root=UUID=5038bb46-fda7-4757-bd56-8af7da7635cc ro rootflags=commit=60,nobarrier,data=writeback crashkernel=384M-2G:64M,2G-:128M quiet splash ipv6.disable=1
ProcEnviron:
 LANGUAGE=fr_FR.utf8
 LANG=fr_FR.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-13.18-generic
RelatedPackageVersions:
 xserver-xorg 1:7.5+1ubuntu2
 libgl1-mesa-glx 7.8.0~git20100203.64da2aee-0ubuntu0sarvatt~karmic
 libdrm2 2.4.17+git20100204.1802e1a4-0ubuntu0sarvatt~karmic
 xserver-xorg-video-intel 2:2.9.1-1ubuntu4
SourcePackage: xorg
Symptom: display
Uname: Linux 2.6.32-13-generic x86_64
dmi.bios.date: 03/13/2006
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F6
dmi.board.name: GA-K8NF9 Ultra
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF6:bd03/13/2006:svn:pn:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-K8NF9Ultra:rvr:cvn:ct3:cvr:
system:
 distro:             Ubuntu
 architecture:       x86_64kernel:             2.6.32-13-generic

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid

-- 
adding second monitor changes colors/colours in first monitor
https://bugs.launchpad.net/bugs/522167
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