General

• Updated to a newer Arch Linux base
• Updated the Linux kernel to 6.11
• Updated the Mesa graphics driver base
• Desktop mode now ships with Plasma 6.2.5
• Beginnings of support for non-Steam Deck handhelds

Controllers and Input

• Add support for the Proteus Byowave controller
• Fixed an issue where Switch Pro Controller gyros might not work on first connection
• Fixed an issue with stuck/hanging controller inputs when exiting Steam

Bluetooth

• Fixed Bluetooth devices still being able to wake the Steam Deck from suspend, even when Bluetooth was disabled from Desktop mode
• Enable HFP/HSP profiles, to allow using the integrated microphone from headsets and earbuds
  • Currently only available to select in Desktop mode
• Added battery level display for supported Bluetooth devices
• Include a bugfix for the Airpods when using the AAC codec
• Bluetooth controllers can now wake LCD units from sleep, previously only available on OLED models
  • Known issue: Bluetooth LE based controllers are not currently compatible with bluetooth wake on LCD models

Steam Deck Dock

• Made compatibility improvements for certain displays including TCL FireTV models and Dell VRR capable monitors

Graphics and Performance

• Enabled AMD P-State CPU frequency control
• Fixed a performance regression for No Rest for the Wicked

Desktop

• Updated to Plasma 6.2.5 (previously 5.27.10) - see the big changes in Plasma 6 here
• Surround sound now works correctly
  • Enabling the setting is currently only available via Desktop mode
• KDE Filelight is now installed by default for disk usage visualization and low disk space notifications
• Speed and robustness improvements when switching between desktop and game mode
  • Fixed a common cause of hangs when switching to desktop mode
  • Fixed some cases where Steam could take up to ninety seconds to exit on shutdown or switch to desktop
• Added ‘gocryptfs’ support to desktop session to enable use of the Plasma Vaults feature

Misc

• Fixed some cases where “filter-chain” or other virtual sound devices would erroneously appear in the UI
• Fixed cases where applying system updates could fail if certain configuration files were corrupted or malformed
• Various enhancements to System Report functionality for support and troubleshooting
• Fixed compatibility issue with certain DNS servers causing very slow domain lookups
• Improved responsiveness of system when running into out-of-memory crash situations
• Enabled IPv6 Privacy Extensions by default

Known Issues

• Creative Zen Air Pro earbuds display an unexpected all-zeros entry under the “Show all devices” section when pairing
• Super NES controllers can erroneously show up as connected when they are not
• DualShock 3 controllers are currently not able to be paired or used

Developer

• Updated to a 6.11 based kernel
• Added debuginfod URLs for SteamOS
• Added systemd .socket units to the default list of /etc files preserved across updates
• When running in a VM, system will now default to the desktop session
• Swap file setup now uses standard ‘mkswap’ functionality instead of shipping an ad-hoc ‘mkswapfile’ script
• The steamos-readonly command now warns that the status might not be accurate when sysexts are loaded
• Fixed a case that could introduce duplicate boot entries for devices manually setup to dual-boot
• The pacman cache is now cleaned after applying a SteamOS update
  • Fixes stale cache errors working with pacman after switching branches