SteamOS 3.9.2 beta stops the frame limiter clamping VR streamed to a Steam Frame

SteamOS 3.9.2 fixes the frame limiter being applied to VR titles streamed from a Steam Machine to a Steam Frame, the first time Valve’s release notes have named that streaming path. Valve published the build on September 25 for the SteamOS beta and preview channels, a different branch from the 3.8.28 stable release that reached everyone the same day.

Valve’s fix covers a Steam Machine booting with no display attached. Image: Valve

Valve’s wording is narrow: “Fixed the frame limiter incorrectly applying to VR titles when streaming from Steam Machine to Steam Frame.” The same build also fixes the “Disable Frame Limiter” toggle failing when VRR is switched on.

Valve has not announced that VR streaming from a Steam Machine to a Frame is available. On September 19 the company’s position was that the Steam Machine could not stream VR games to the headset yet, while calling the console an ideal host for it.

A frame limiter is a console-friendly idea: cap the output, keep the fans quiet, keep the power draw predictable. A VR title has to hold the headset’s own refresh rate instead, and Valve’s wording says the limiter should not have been reaching those titles.

A display-less Steam Machine can host Remote Play again

The same build fixes Steam Remote Play not working on a Steam Machine that boots with no external display connected, according to Valve. Owners on the Steam Machine discussion board had been raising it since August 15, describing waking the machine with nothing plugged into it and finding it absent from the Remote Play list, and the ways round it they found themselves were an HDMI dummy plug or Wake-on-LAN over ethernet.

Valve’s note covers Remote Play, and only that. It does not say the machine now boots headless in every other sense.

The frame limiter fix concerns VR titles streamed from the console to a Steam Frame. Image: Valve

3.9 is a much bigger rebase than the stable branch

SteamOS 3.9 sits on a Linux 7.2 kernel, moves Desktop Mode from Plasma 6.4.3 to Plasma 6.7.3, and adds preliminary hibernation support that is not exposed in the Game Mode interface. It also switches the Wi-Fi backend to wpa_supplicant for new installations, and Valve calls one consequence a known issue: existing installations stay on iwd unless it is turned on in Developer Settings.

3.9.2 also undoes four regressions Valve shipped to its own earlier 3.9 previews, among them a Steam Machine waking itself out of hibernation and virtual keyboard input breaking for some languages in Game Mode. On the compatibility side it fixes Elden Ring and Dark Souls III failing to run on recent Panther Lake Intel CPUs, works around a firmware issue causing excessive fan speed after waking from sleep on some ASUS devices, and adds preliminary Legion Go 2 brightness control.

Beta and preview are opt-in through Settings, System, System Update Channel, and Valve gives no date for 3.9 reaching the stable branch. Until it does, the frame limiter fix only exists for owners who went looking for it.

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