Display scale jumps from 100% to 200% some times upon coming from suspend or a locked state
Debian testing/unstable mix with gnome shell 3.34.1+git20191024-1. On Thinkpad P1, using nvidia drivers to drive 3840x2160 resolution, I boiled down (so probably used 200% at some point) to use 100% Scale and 1.7 scaling factor for fonts set via Gnome Tweaks. Generally everything works but some times upon unlock of a locked screen or coming up from resume Display scale jumps to 200%. I have not yet captured some logs around specific such point but I see in the past (according to what I have reported by journalctl), I have e.g. "Nov 09 18:43:44 lena gnome-shell[1257]: Getting invalid resource scale property", which seems to come from mutter: https://codesearch.debian.net/show?file=mutter_3.34.1%2Bgit20191107-1%2Fclutter%2Fclutter%2Fclutter-actor.c&line=5773 . Not sure yet if relevant, and will provide more information later unless someone already has an idea on where to dig (may be some setting somewhere).