Ubuntu

gnome-color-manager ignore wizard selections: strong magenta cast with Spyder2Express calibration

Reported by claudio@ubuntu on 2012-05-06
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
gnome-color-manager (Ubuntu)
Undecided
Unassigned

Bug Description

The new calibration tool worked had acceptable results on a second laptop running Ubuntu 12.04. However, on my own laptop (attached to an external screen) the profile had a terrible magenta cast. Very pronounced, not the type "your eyes adapt to it".

After investigating and looking closely at the profile, it was clear that the profile used a 6500K white balance (in the properties of the profile in the Ubuntu Colour setting), instead of the 5000K requested in the wizard (it's called "Photography and graphics" there). Furthermore, the wizard offered 3 calibrations options: 4, 10 and 20 minutes depending on the desired accuracy. While I chose 4 minutes for testing purposes, the calibration took a long time (an hour or longer). Also, the advanced output in the calibration window (hidden by default) categorised the screen as CRT while it's a LCD.

Because of this, I don't think the problem is tied to the specific firmware (running the latest available) of the hardware, but rather to gnome-color-manager integration with the device and maybe certain configurations. I don't have other calibration devices available to test.

The workaround is to just use dispcalGUI to generate the profile. See my blogpost here: http://nxadm.wordpress.com/2012/05/06/screen-calibration-on-ubuntu-12-04-with-spyder2-workaround

Thank you for your work and please feel free to contact me.

Claudio

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-color-manager 3.4.0-1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Sun May 6 13:46:01 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
SourcePackage: gnome-color-manager
UpgradeStatus: Upgraded to precise on 2012-04-28 (8 days ago)

claudio@ubuntu (claudio.ubuntu) wrote :
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