SteamOS 3.5.1 Preview Update: October 12th
Note: This update is for the Steam Deck Preview channel, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel.
General
- Fixed a case where an SD card with filesystem errors would be mounted as read-only.
- Fixed the custom performance overlay presets file inheriting the default settings from the steam presets.
- Fixed internal display rotation being erroneously reported to the game.
Firmware 118
- Actually added undervolting controls.
External display
- Fixed a 3.5 regression with HDMI output.
- Fixed a long-standing issue where the internal display backlight would always stay on.
- Fixed bug with HDR applications showing in wrong colorspace if they moved their window during swapchain creation.
- Fixed HDR not working in 32-bit applications.
- Added HDR Analysis to developer settings.
- Disabled HDR exposure in “My Little Pony: A Maretime Bay Adventure” as it enables it without rendering in HDR.
Desktop Mode
- Fixed a case where the desktop could be empty and apps would fail to launch.
- Fixed a bug where switching to the Plasma Desktop transition could result in broken colors.
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