I don't know what am I doing

[Miguel Rozsas]

Hi there ! 

I need some help about how to use colorhug because I guess am doing something wrong...

I know a god subject should describe the problem we are facing, and I think this is fine since I really don't know if there is something wrong or not.

Well, it seens something is wrong, but I don't know if it is a wrong procedure  or a device error.

Anyway...

I just received my ColorHug a few days ago.

I have read the documentation, the FAQ and I still have questions

The firmware of device is updated and the hardware test works. The livecd is 20131205.

My desktop LED monitor is an AOC 2343. 

My first question is about /usr/bin/colorhug-ccmx.After an refresh, there is only two options for LED monitor: Factory and community
So, what I suppose to do ? Stay with the Factory preset ?

The second question is about "Measuring a test patch".
I run /usr/bin/gcm-picker, put the colorhug in the middle of the box on the screen and I got a light-blue box after I click on measure button.
Why you asked me to do this ? What is the point running it ? What I should do with it ? What that light blue box means ?

Than I run gnome-control-center to create an ICC profile.
Everything is ok. No error messages and at end of 10 minutes or so (I choose the intermediate test) there is a icc file on ~/.local/share/icc. That file is attached to this message.

There is no change on what I see on the monitor. I save it on the flash drive to use it on my real system. I will go back to this in a minute.

Then, I see a program named dispcalGUI on the menus. When I run it the screen changes dramatically. It get a much cold cast than the default one. It has a blue cast, much more than the default icc profile (read about bellow).

However, if a try to load that icc file, I got an error message: "The file does not containg settings" and I get a monitor/image with a very dark, yellow cast.

The screens are attached.

Than I close the livecd and back to my system (Ubuntu 14.04.02) I double click on that file and my display gets a very warm cast. I mean, really warm, yellowish cast...I guess it is the same as above, not sure...

You can get an idea based on two photos from my cel phone. In one photo it is using the colorhug icc profile. The other one is  using the default profile/file that came with the monitor. 

I don't know why, but the difference between the two photos is not as big as it is in real life. At naked eye the difference between the 2 profiles is much bigger that the photos can show.

For me, looks like the default icc is right. The whites are more white...the colohug  icc profile gives me a "dirty" yellow white...

What I am doing wrong, please ? I appreciate any comments!

Many thanks in advance, 

[Robert M. Albrecht]

Hi,

using Fedora 22 with latest updates-testing installed

The laptop is sitting lid closed in a docking station with a external
monitor connected.

Using Colorhug2 on the external monitor fails:

Mai 28 18:49:55 localhost.localdomain gnome-session[1853]:
(gnome-control-center:31080): color-cc-panel-WARNING **:
/var/lib/gdm/.local/share/icc/edid-d4351ae8636ca40d810a65c73123a562.icc
is not usable by this user
Mai 28 18:49:55 localhost.localdomain gnome-session[1853]:
(gnome-control-center:31080): color-cc-panel-WARNING **:
/var/lib/gdm/.local/share/icc/edid-1fdb454b8696304509ee2aa42a737137.icc
is not usable by this user
Mai 28 18:50:29 localhost.localdomain /usr/libexec/gdm-x-session[1745]:
Activating service name='org.freedesktop.ColorHelper'
Mai 28 18:50:29 localhost.localdomain /usr/libexec/gdm-x-session[1745]:
Successfully activated service 'org.freedesktop.ColorHelper'
Mai 28 18:50:29 localhost.localdomain gnome-session[1853]:
(gnome-control-center:31080): color-cc-panel-WARNING **: failed to start
calibrate: failed to get output

Color-Preferences brings up the dialog, ask for white point, ... but
when it should start calibrating, nothing happens. Not even an error
message.

Fedora 21 on same configuration worked flawless.

F22: Calibrating the internal display (after opening the lid) works
without problems.

colorhug-flash and colorhug-refresh are working.

How to debug this one ?

cu romal

[Thomas Daede]

Yes, this is this Fedora bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1204282

Due to it, it is currently not possible to use the GNOME calibration
utilities on Fedora 22.

You can instead use the argyll utilities directly, though it is much
more complicated. Or you can figure out a working LiveCD to use for
color profile generation.