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
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Updated to a newer Arch Linux base
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Updated the Linux kernel to 6.11
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Updated the Mesa graphics driver base
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Desktop mode now ships with Plasma 6.2.5
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Beginnings of support for non-Steam Deck handhelds
Controllers and Input
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Add support for the Proteus Byowave controller
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Fixed an issue where Switch Pro Controller gyros might not work on first connection
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Fixed an issue with stuck/hanging controller inputs when exiting Steam
Bluetooth
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Fixed Bluetooth devices still being able to wake the Steam Deck from suspend, even when Bluetooth was disabled from Desktop mode
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Enable HFP/HSP profiles, to allow using the integrated microphone from headsets and earbuds
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Currently only available to select in Desktop mode
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Added battery level display for supported Bluetooth devices
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Include a bugfix for the Airpods when using the AAC codec
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Bluetooth controllers can now wake LCD units from sleep, previously only available on OLED models
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Known issue: Bluetooth LE based controllers are not currently compatible with bluetooth wake on LCD models
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Steam Deck Dock
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Made compatibility improvements for certain displays including TCL FireTV models and Dell VRR capable monitors
Graphics and Performance
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Enabled AMD P-State CPU frequency control
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Fixed a performance regression for No Rest for the Wicked
Desktop
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Updated to Plasma 6.2.5 (previously 5.27.10) – see the big changes in Plasma 6 here
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Surround sound now works correctly
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Enabling the setting is currently only available via Desktop mode
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KDE Filelight is now installed by default for disk usage visualization and low disk space notifications
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Speed and robustness improvements when switching between desktop and game mode
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Fixed a common cause of hangs when switching to desktop mode
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Fixed some cases where Steam could take up to ninety seconds to exit on shutdown or switch to desktop
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Added ‘gocryptfs’ support to desktop session to enable use of the Plasma Vaults feature
Misc
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Fixed some cases where “filter-chain” or other virtual sound devices would erroneously appear in the UI
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Fixed cases where applying system updates could fail if certain configuration files were corrupted or malformed
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Various enhancements to System Report functionality for support and troubleshooting
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Fixed compatibility issue with certain DNS servers causing very slow domain lookups
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Improved responsiveness of system when running into out-of-memory crash situations
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Enabled IPv6 Privacy Extensions by default
Known Issues
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Creative Zen Air Pro earbuds display an unexpected all-zeros entry under the “Show all devices” section when pairing
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Super NES controllers can erroneously show up as connected when they are not
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DualShock 3 controllers are currently not able to be paired or used
Developer
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Updated to a 6.11 based kernel
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Added debuginfod URLs for SteamOS
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Added systemd .socket units to the default list of /etc files preserved across updates
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When running in a VM, system will now default to the desktop session
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Swap file setup now uses standard ‘mkswap’ functionality instead of shipping an ad-hoc ‘mkswapfile’ script
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The steamos-readonly command now warns that the status might not be accurate when sysexts are loaded
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Fixed a case that could introduce duplicate boot entries for devices manually setup to dual-boot
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The pacman cache is now cleaned after applying a SteamOS update
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Fixes stale cache errors working with pacman after switching branches
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