Bug: With an external monitor on the SteamDeck, the game will launch in the SD's aspect ratio #9265
Description
My external monitor runs at resolution 1920x1080 (16:9) and the SteamDeck's Display uses resolution 800x1280 (10:16). Some games (when using Proton) start with a 10:16 resolution on my 16:9 Display causing black bars on the left and right side.
My SteamDeck runs CachyOS.
Proton: I have tested this with Proton 9, 10 and Experimental
| Game | Steam Linux Runtime 1.0 (scout)1 / Native Version | Proton |
|---|---|---|
| Dying Light |  |
 |
| Dungeons of Hinterberg | No Native version avaliable |  |
| No Man's Sky | No Native Version avalible |  |
| Tomb Raider | Native version wouldn't launch2 |  |
| Euro Truck Simulator 2 |  3 |
 |
Games I tested where the Proton version did not produce this Issue:
- Half-Life
- Half-Life 2
- Satisfactory
- Portal
After noticing what happened with Euro Truck Simulator 2's resolution I got the following (possible, I actually have no idea what happened) conclusion: Proton only reports the fullscreen resolution of the SD's display (Display 1), but then launches on the external Monitor (Display 2). The game then either stretches it's frame (See ETS2) or adds black bars left and right.
Footnotes
-
Only Runtime Version 1.0 showed up in the drop-down menu for compatibility tool overrides for me, so I only tested with 1.0. ↩
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Crashes with
ERROR: ld.so: object '/home/schnow265/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.. I guess scout is 32bit or TR wants a 32bit library? ↩ -
The black bars are intended here. Here is a more clear picture:
↩