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.

• 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.