Valve Releases SteamOS 3.9.5 With Linux 7.2 and Plasma 6.7

Valve ships the first stable SteamOS 3.9 release

Valve released SteamOS 3.9.5 as a stable update available across supported systems on October 24. It is the first stable release in the SteamOS 3.9 series and carries forward changes previously available in preview form.

The update is based on a newer Arch Linux foundation and includes an updated bootloader, package changes, security and stability fixes, and other system improvements.

Linux 7.2 and Plasma 6.7 update the platform

SteamOS 3.9.5 introduces the Linux 7.2 kernel and upgrades Desktop Mode from KDE Plasma 6.4 to Plasma 6.7. The release also improves Steam Deck idle power consumption when no audio is playing, adds preliminary hibernation support, and strengthens compatibility for running SteamOS as a virtual-machine guest.

The release also changes WPA Supplicant to the default Wi-Fi component. It includes a fix for hidden Wi-Fi networks failing to connect on the first attempt, while the Desktop Mode lockscreen can now be explicitly enabled in settings but remains off by default.

Hardware support and compatibility receive targeted fixes

SteamOS 3.9.5 improves support for the Steam Frame wireless adapter. It also addresses suspend-and-resume problems on systems with RDNA1 or RDNA2 dedicated graphics, fixes audio issues when certain monitors are connected in multi-monitor setups, and resolves occasional Steam Machine firmware-update failures.

The update adds preliminary Legion Go 2 brightness control and fixes a crash when launching Forza Horizon 6 on the device. It also includes a workaround for excessive fan speed after waking some ASUS devices and addresses boot-screen corruption on Intel Panther Lake systems.

Frame limiting, Remote Play and game fixes

The release fixes the “Disable Frame Limiter” setting when variable refresh rate is enabled and corrects frame-limiter behavior for VR titles streamed from Steam Machine to Steam Frame. It also fixes Remote Play failing on Steam Machine when the system boots without an external display connected.

Additional fixes address lost input when a launcher window is moved in Game Mode, lower-than-intended frame rates on some external displays, and games failing to run on recent Panther Lake Intel processors. It also includes fixes for resume-related performance issues in Star Wars: Galactic Racer on Steam Machine, GPU errors in The Crew Motorfest, and a firmware-related fan-speed issue affecting some ASUS devices.

Security certificates are revoked and stability issues are addressed

SteamOS 3.9.5 includes security and stability updates, including the revocation of compromised eMudhra Certificate Authority certificates. The release also fixes a problem where changing the time zone could prevent the system from switching to Desktop Mode until it was rebooted.

The stable release was publicly reported on October 24. The available reporting does not provide a separate measured rollout timeline beyond the release being available for all supported systems.