redshift doesn't work on ubuntu-gnome 14.04

[dhanvi]

I have installed the latest version of the redshift on ubuntu-gnome 14.04 but it doesn't work at all

what should I do

[maandree]

Does xgamma work for you?

[dhanvi]

yes xgamma is working fine for me

[maandree]

How about redshift -O 4000?

[dhanvi]

I am getting this kind of error
[17:13:23] c0mrad3 :: c0mrad3 ➜ ~ » redshift -O 4000
Brightness values must be between 0.1 and 1.0.
[17:13:29] c0mrad3 :: c0mrad3 ➜ ~ » redshift -O 3700 1 ↵
Brightness values must be between 0.1 and 1.0.
[17:16:10] c0mrad3 :: c0mrad3 ➜ ~ »

[maandree]

Probably an error in your redshift.conf.
Does redshift -O 4000 -b 1 work?

[dhanvi]

is there a way I could configure the my system colour to make it similar using xgamma or xrandr as I want my system colour to be fixed irrespective of the time, please help me with it

[dhanvi]

[17:16:10] c0mrad3 :: c0mrad3 ➜ ~ » redshift -O 4000 -b 1 1 ↵
Screen 1 could not be found.
Failed to start adjustment method randr.

is the thing that I am getting

[maandree]

Neither xgamma nor xrandr have support for adjusting the brightness for red, green and blue separately, which is required to set the colour temperature. However, if you monitor have support for it on its control panel (it should; and it is called contrast on the monitor) you can configure it that way, although that is not very flexible.

---

screen should be set to 0, and crtc should be set to 0 for your primary monitor and 1 for your secondary monitor.

[dhanvi]

Can you say how to do it exactly I am not aware of doing it

[maandree]

If you remove the [randr] section from your config file it should work.

Redshift currently does not have support for using multiple monitors
simultaneously. So if you have two monitors you should run
redshift -m randr:crtc=0 ; redshift -m randr:crtc=1, and add the
-g option if you use gamma correction.

---

If you meant about setting it manually on the monitor, it is a bit more
complicated. You would have to calculate want brightness each
channel should have (you would have to do that if you used another
program can set the brightnesses too) and multiple that to your
current constrasts.

[dhanvi]

working fine