Steam seems to allegedly force aggressive scaling on the Deck's internal panels, regardless of type

[RodoMa92]

Your system information

• Steam client version (build number or date): Latest beta client as of 26/12
• Distribution (e.g. Ubuntu): Bazzite Deck 41
• Opted into Steam client beta?: Yes
• Have you checked for system updates?: Yes
• Steam Logs: steam-logs.tar.gz
• GPU: AMD

Please describe your issue in as much detail as possible:

A couple of months ago I've seen that something on bootup is triggering a display scaling reset at 100% on my Deck hardware each time I switch to desktop mode. This is problematic for people with aftermarket display panels since it makes them unreadable on that resolution, and the only workaround I've found is to run this script on bootup to change the settings back after (allegedly, I'm not sure if you are doing this by default on Steam, I do not have source code visibility in it) the Steam Client starts up:

#!/usr/bin/env bash
sleep 1.7s
kscreen-doctor output.eDP-1.scale.1,5

For any other users, you might need to tweak the sleep timer according to your needs.

If your client is indeed doing this by default on Deck, please guard it further with more checks like resolution/panel name and do not just blindly assume that every Deck hardware is all of the same.

If not feel free to close this, I'll debug it further. I've tried to disable the Steam Client autostart to check, but I do not seem to be able to do that properly in a easy way.

Steps for reproducing this issue:

1. Set a higher (more than 100%) resolution scaling using Wayland on KDE
2. Switch back to game mode
3. Switch back to desktop mode again
4. Scale is reset, making it unreadable. It really shouldn't be for me.