Redshift: Screen temperature doesn't adjust until suspend-resume cycle

[chiraag-nataraj]

I'm using redshift 1.9 (according to redshift -V) on Debian Sid/Experimental. When redshift adjusts the color temperature, the changes don't take effect until I suspend and resume my computer (basically, the monitor is turned off and back on).
First, why would this be happening?
Second, if this is a bug, is there a way to mitigate this without having to suspend-resume?

[EDIT] I tried using sct instead and it seems the same problem holds. This is most likely an xrandr bug.

[kaipoethkow]

I am observing the same behaviour on ubuntu 16.04.

[jonpolak]

I have the same problem on Ubuntu - but it's working fine on Debian testing

[joiharalds]

I have the same problem on Ubuntu Gnome 16.04 with redshift version 1.10 (redshift -V). I'm on a Dell xps 13 with Intel Corporation Sky Lake Integrated Graphics (rev 07).

[simontheflutist]

Same problem on 16.04 with redshift 1.1. Dell Precision 5510 with Nvidia graphics.

[kaipoethkow]

Anyone found a workaround? Switching a screen off and on again in display settings updates the temperature. But this is only feasible in a multi monitor system.

[jonpolak]

Does it change only the screen that you turn OFF/ON or all at once? You use
arandr?

On Thu, Aug 18, 2016, 11:48 kaipoethkow [email protected] wrote:

Anyone found a workaround? Switching a screen off and on again in display
settings updates the temperature. But this is only feasible in a multi
monitor system.

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[denpad]

I have the same problem.Ubuntu 16.04 and RedShift Version 1.10, screen temperature settings are not applied until suspend/resume. I found a workaround: Use display settings to change resolution of the screen. After resolution switch color temperature settings are applied.

[kaipoethkow]

I agree that the resolution switch is the better workaround (also works for single screen systems).

Anyone knowledgable enough about X to figure out a real fix for this?

[chiraag-nataraj]

Even easier actually - rotate your screen using xrandr -o inverted && xrandr -o normal. But yeah, there's something else going on here on X's part.

[thob]

for the record: f.lux doesn't work either on LM 18 (16.04)

[inactivist]

Similar problems on LM 18 -- After a reboot, Redshift's current settings take effect only after resume from suspend. @chiraag-nataraj's xrandr -o inverted && xrandr -o normal seems to have no effect here (didn't try resolution switch, will do that on next reboot)

Running redshift 1.10 on Lenovo Carbon X1 4th gen

Graphics:  Card: Intel Sky Lake Integrated Graphics bus-ID: 00:02.0
           Display Server: X.org 1.18.3 drivers: intel (unloaded: fbdev,vesa)

EDIT: It seems no _dynamic_ adjustments are applied even after system suspend/resume. Enabling/disabling redshift has no visible effect, "Suspend for x minutes" etc doesn't seem to have any visible effect on display color adjustment -- unless I suspend the system (sleep) then resume the system - changes take effect only once on system resume.

[thob]

Seems Kernel related

[chiraag-nataraj]

Huh interesting. That would explain why other programs like this aren't working either and why it stopped working even though I didn't update anything to do with X.

[kaipoethkow]

It works again normally for me! :)

Latest 4.4 Kernel on Ubuntu 16.04 seems to have fixed this issue. (installed it yesterday)

[jonpolak]

4.7 kernel from yakkety latest build has same problems.

On Thu, Sep 1, 2016, 11:10 kaipoethkow [email protected] wrote:

It works again normally for me! :)

Latest 4.4 Kernel on Ubuntu 16.04 seems to have fixed this issue.
(installed it yesterday)

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[denpad]

I can confirm that since the latest update of thr 4.4 Kernel on ubuntu 16.04 changing of the screen temperature works again.

Am 1. September 2016 20:10:28 MESZ, schrieb kaipoethkow [email protected]:

It works again normally for me! :)

Latest 4.4 Kernel on Ubuntu 16.04 seems to have fixed this issue.
(installed it yesterday)

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[chiraag-nataraj]

Latest 4.7 kernel fixed this issue (4.7.2).