Night Color on KDE Plasma 5.17.5

radio_flyer · Posted: Fri Mar 20, 2020 7:25 am Post subject: Night Color on KDE Plasma 5.17.5

Well, I had Night Color working fine on 5.17.4, but now on 5.17.5 whenever I log in at night Night Color is off. I have to enter System Settings, change something on the Night Color tab, change it back so the Apply button appears, and pressing Apply finally puts the monitors in Night Color mode. Is anyone else having the same problem? Found a fix?

fedeliallalinea · Posted: Sat Mar 21, 2020 10:46 am Post subject:

Try to remove [NightColor] section in .config/kwinrc and relogin, so change settings and see if persist in next login
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radio_flyer · Posted: Sat Mar 21, 2020 4:33 pm Post subject:

I've already tried that, with no success. I've discovered two things about it: it does switch to Night Color if I'm logged in during sunset, but it won't when I log out and then back in after sunset. Also, the SDDM login screen (screens on my system as I have 3 monitors) aren't Night Color (never have been), but they switch to Night Color after I log in but before kwin comes up. Once kwin is running and the KDE panel appears Night Color gets turned off.

$ qdbus org.kde.KWin /ColorCorrect nightColorInfo
Active: true
ActiveEnabled: true
Available: true
CurrentColorTemperature: 6500
EveningBeginFixed: 18:00:00
LatitudeAuto: 0
LatitudeFixed: 0
LocationEnabled: true
LongitudeAuto: 0
LongitudeFixed: 0
Mode: 2
ModeEnabled: true
MorningBeginFixed: 06:00:00
NightTemperature: 3500
NightTemperatureEnabled: true
Running: true
TimingsEnabled: true
TransitionTime: 5

$ sed -nr "/^\[NightColor\]/ { :l /^\s*[^#].*/ p; n; /^\[/ q; b l; }" .config/kwinrc
[NightColor]
Active=true
EveningBeginFixed=1800
Mode=Times
MorningBeginFixed=0600
NightTemperature=3500
TransitionTime=5

Browsing bugs.kde.org it appears Night Color has quite a few bugs. I may have to wait until the next point release and see if it magically fixes itself, or file another bug.

asturm · Posted: Sat Mar 21, 2020 4:49 pm Post subject:

Don't confuse the lock screen with SDDM. SDDM can't have Night Color since it runs before you log into Plasma session.

There will be no more point release if 5.17. Current ~arch available version is 5.18.3 if you want to try that.
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radio_flyer · Posted: Sat Mar 21, 2020 7:25 pm Post subject: