Colour profile

From ThinkWiki
Revision as of 11:50, 14 December 2009 by Tonko (Talk | contribs) (Unpack and find your colour profile)

Jump to: navigation, search

Linux distributions are starting to get support for Colour profiles with gnome-color-manager which is planned to be part of Fedora 13 [1].

IBM and Lenovo have been providing colour profile packages for years, unfortunately they are stuck away in Windows .exe files, so you need wine or a windows machine to unpack them.

TODO
simplify the procedure for finding the right colour profile to load

Unpack and find your colour profile

If you unpack the exe file using Wine the profiles will be located in ~/.wine/drive_c/DRIVERS/WIN/MONITOR/ In that directory you will find a .INI file with a mapping of the LCD vendor to colour profile. But first you need to know which LCD you have. Unfortunately xrandr does not provide the vendor information, but monitor-edid from the monitor-edid RPM (on Fedora) does.

$ monitor-edid
EISA ID: LEN4022
Screen size: 28.6 cm x 21.4 cm (14.06 inches, aspect ratio 4/3 = 1.34)
Gamma: 2.2
Digital signal

	# Monitor preferred modeline (60.0 Hz vsync, 64.0 kHz hsync, ratio 4/3, 124 dpi)
	ModeLine "1400x1050" 108 1400 1448 1560 1688 1050 1051 1054 1066 -hsync -vsync

	# Monitor preferred modeline (50.0 Hz vsync, 53.3 kHz hsync, ratio 4/3, 124 dpi)
	ModeLine "1400x1050" 89.97 1400 1448 1560 1688 1050 1051 1054 1066 -hsync -vsync

As you can see from the above, I have a LEN4022. If I then look at the INF file

$ grep LEN4022 TPLCD.INF 
%TPSXGAP%   = TPLCDSXGAP.Install,    Monitor\LEN4022   ; 14"   SXGA+     TFT               1400x1050
%TPSXGAP%   = TPLCDSXGAP.Install.NTx86,    Monitor\LEN4022   ; 14"   SXGA+     TFT               1400x1050
%TPSXGAP%   = TPLCDSXGAP.Install,    Monitor\LEN4022   ; 14"   SXGA+     TFT               1400x1050

You will see this maps to TPLCDSXGAP

We now need to find what colour profile that maps to.

$ grep -A 2 TPLCDSXGAP TPLCD.INF
....
[TPLCDSXGAP.Install.NTx86]             ; SXGA+ 1400x1050
DelReg=DEL_CURRENT_REG
AddReg=1400, DPMS, ICM
--
[TPLCDSXGAPF.Install.NTx86]            ; SXGAP 1400x1050 IPS
DelReg=DEL_CURRENT_REG
AddReg=1400, DPMS, ICMF

This will generate quite a bit of output, but at the end you will see lines like those shown above. The last hit is a false-positive and not what we are looking for, but the one above it is correct. As you can see it refers to a ICM colour profile.

Now to finally find out which file we need to use

$ grep ICM TPLCD.INF
....
[ICM]
HKR,,ICMProfile,0,"TPLCD.icm"
[ICMG60]
HKR,,ICMProfile,0,"TPLCD60.icm"
[ICMF]
HKR,,ICMProfile,0,"TPFLX.icm"
[ICMMB60]
HKR,,ICMProfile,0,"TPMB60.icm"
[ICMMB72]
HKR,,ICMProfile,0,"TPMB72.icm"

As you can see above the ICM colour profile, maps to the TPLCD.icm file, so that is the file we need to load in gnome-color-manager for our ThinkPad LCD.

Recent ThinkPads

Download monitor profiles

Supported ThinkPads

Old ThinkPads

Download monitor profiles

Supported ThinkPads