Night Light not working on fresh Regolith install

[p3k]

• [x] I've run a search on the existing bug reports to make sure I'm not filing a duplicate (you can use the search box at the top left corner)
• [x] I've read the Regolith documentation and didn't find any relevant topic
• [ ] I tried asking on Slack (especially for configuration related issues)

Describe the bug I upgraded Ubuntu 18.04 to 20.04, added the PPA and installed Regolith. Nothing happens when I change the slider in the Night Light settings.

To Reproduce Go to the Night Light settings, enable it if necessary, and change the color temperature.

Expected behavior The color temperature of the monitors should change accordingly.

Screenshots

Monitors are detected correctly.

Configuration file(s)

Did not configure anything related to Regolith, yet.

Installation Details

• Regolith Install Type: PPA
• Regolith Version: 1.6
• PPA url: ppa:regolith-linux/release
• Host OS (for PPA): Ubuntu 20.04

Additional context

When I drag the slider these lines appear in /var/log/syslog:

Sep  8 13:51:18 lichte gsd-color[14429]: could not find device: property match 'XRANDR_name'='
DVI-D-1' does not exist
Sep  8 13:51:18 lichte gsd-color[14429]: could not find device: property match 'XRANDR_name'='
HDMI-1' does not exist

However, xrandr does output exactly these IDs:

→ xrandr --listactivemonitors 
Monitors: 2
 0: +*HDMI-1 1920/518x1200/324+0+0  HDMI-1
 1: +DVI-D-1 1920/518x1200/324+1920+0  DVI-D-1

[p3k]

Killing gsd-color has no effect, it just is restarted, anyway.

[kgilmer]

I have verified this but found that if I log out and back in again that the color settings suddenly work. Did you log out after making this change and see any difference @p3k ?

[p3k]

need to check this when i am back at the machine (office)…

[p3k]

nope, not even after a powered-off weekend and fresh start this morning the night light works.

[amireldor]

Hello persons, I experience this issue or something related. I'm back on Regolith after a while. I installed a fresh Ubuntu 21.10 and then used the PPA to install Regolith.

I had the night light enabled on GNOME before I installed Regolith. When I log in under the Regolith session, there's no night light, even though it's enabled in Settings (I go there with Super+C). When I disable it, it seems like the screen is night-lighted instantly and then "fades" back to normal light. When I re-enable the night light after that, it kicks in and seem to work fine (I don't know if it goes back to normal light at sunrise, I'm sleeping at that time :smiling_face_with_tear: ).

[cwh1te]

I had this problem with similar gsd-color errors in syslog, but after killing the gsd-color process with kill -4 <pid> I was able to turn on the night light.

Edit: This continues to be a recurring issue but pkill gsd-color consistently fixes it. During times when the night light should be applied, gsd-color spams complaints about missing xrandr devices to the system journal every minute until it's killed.

[mpareja]

I can confirm that pkill gsd-color allows night light mode to kick in.

[giomf]

Hello,

unfortunately killing gsd-color does nothing for me. However, I noticed that for org.gnome.SettingsDaemon.Color.target crashes with the following error message:

org.gnome.SettingsDaemon.Color.target: Job org.gnome.SettingsDaemon.Color.target/start failed with result 'dependency'.

Is this the case for you too or is the service running?

[mpareja]

unfortunately killing gsd-color does nothing for me.

Yes, this trick is no longer working for me on newer versions of Ubuntu.

[mimre25]

I experience the same issue just like amireldor describes.

When I log in, the night light doesn't work. Then I go to the settings, turn it off ~ it flicks on and fades off, and then I turn it on and it works fine.

I'm still on Ubuntu 20.04 but with regolith 3:

➜ ~ apt show regolith-desktop

```sh Package: regolith-desktop Version: 4.4.2-1regolith-focal Priority: optional Section: x11 Maintainer: Ken Gilmer Installed-Size: 16,4 kB Provides: regolith-desktop-meta Depends: regolith-desktop-session Suggests: update-manager, software-properties-gtk Conflicts: regolith-desktop-meta, unclutter-startup Replaces: regolith-desktop-meta Homepage: https://github.com/regolith-linux/regolith-desktop Download-Size: 5.556 B APT-Manual-Installed: yes APT-Sources: https://regolith-desktop.org/release-3_0-ubuntu-focal-amd64 focal/main amd64 Packages Description: Meta package for Regolith desktop environment This package specifies the root package from which the Regolith desktop environment can be installed. ````

[peterrus]

Workaround: https://github.com/orgs/regolith-linux/discussions/797#discussioncomment-9725952