New SteamOS 3.8.26 Beta released with multiple important fixes

Notebookcheck News — Tech — Sat, 29 Aug 2026 19:44:00 +0200

Summary

Valve has released SteamOS Beta 3.8.26 to users enrolled in the Beta or Preview channels, with the update expected to reach the Stable channel after testing. The release primarily fixes regressions from previous beta builds, including degraded performance when composition is required (such as with FSR enabled) and Firefox freezing in Desktop Mode when fullscreen. It also works around an issue where Unreal Engine 5 VR games displayed a blank image in the right eye, and resolves Bluetooth instability affecting the Nintendo Switch Pro Controller (v1). Additionally, the update fixes Wi-Fi connectivity on the MSI Claw A1M, battery display problems on Lenovo Legion Go models, and system freezes related to SD cards during suspend and resume.

Valve has released a new SteamOS Beta update, with version 3.8.26 now available for users who have opted into the Beta or Preview channel on their devices. Like other beta releases, this update will be tested by users first before Valve eventually moves it to the Stable channel.

SteamOS Beta 3.8.26 fixes and improvements

The latest version mainly focuses on fixing problems found in previous beta builds. One of the more important changes addresses performance issues when composition is required, such as when using FSR. Valve says the previous beta could cause degraded performance in some of these situations, and the latest update fixes the problem.

SteamOS Beta 3.8.26 also brings several improvements for gaming and desktop use. An issue that could cause Unreal Engine 5 VR games to show a blank image in the right eye has been worked around, while Bluetooth instability affecting the Nintendo Switch Pro Controller (v1) has also been fixed.

The update also addresses a few problems on other handheld PCs. Valve has fixed a Wi-Fi issue affecting the MSI Claw A1M, as well as battery display problems on Lenovo Legion Go models. Another fix prevents the MSI Claw from freezing when resuming from sleep with an SD card inserted. 

You can check out the complete list of fixes and changes introduced in SteamOS Beta 3.8.26 below:

• Fixed an issue present in previous beta builds causing degraded performance in some cases when composition is required (such as when having FSR enabled)
• Fixed Firefox in Desktop Mode sometimes freezing when fullscreen
• Worked around an issue where Unreal Engine 5 VR games could display a blank right eye
• Fixed Bluetooth instability with Nintendo Switch Pro (v1) controller
• Fixed Desktop Mode allowing resolutions below 640x480 on certain displays, rendering it unusable
• Fixed a regression from previous beta breaking WiFi connectivity on the MSI Claw A1M
• Fixed issues with battery display on Lenovo Legion Go models
• Fixed a bug where the MSI Claw would freeze on resume if an SD card was present during suspend and resume
• Fixed a bug where the system would freeze on resume if an SD card was removed while suspended

Original article: https://www.notebookcheck.net/New-SteamOS-3-8-26-Beta-released-with-multiple-important-fixes.1382726.0.html Source: Notebookcheck News