I’ve installed Redshift some time ago using “Software Boutique”.
After upgrading to Ubuntu MATE 18.10 a notification message asks for permission to use “geoclue” after the PC is restarted.
If you click:
- No => Redshift quits
- quickly click Yes => Redshift runs correctly adjusting the color temperature of your monitor
- delayed click Yes => Redshift quits
Found following solution - for my PC - from here: https://github.com/jonls/redshift/issues/445
sudo pluma /etc/geoclue/geoclue.conf
- add following:
[redshift] allowed=true system=false users=
- save the file
- restart the PC
Hope this helps.