Valve’s new Steam Deck OLED just went on sale today, but there are goodies for the original LCD model, too — the company is now rolling out a stable build of SteamOS 3.5.5 with a hefty list of fixes, changes, and upgrades.
- Home
- Technology
- News
A huge stable Steam Deck update gives the Dock a brand-new feature
Valve is now rolling out a stable build of SteamOS 3.5.5 with a hefty list of fixes and upgrades, like support for VRR and HDR external displays, undervolting your processor, and a big performance improvement for Starfield .


Some of the biggest are ones we’ve already seen in a September beta, like support for VRR and HDR external displays, the ability to tweak your screen’s color and undervolt your processor with new firmware, and a graphics driver update with a big performance improvement for Starfield (though it still looks like mud in cities).
But there’s one thing on the list I didn’t expect: The update gives the official $79 Steam Deck Dock the new ability to support VRR external monitors itself. (Last I checked, the Steam Deck Dock page said “FreeSync support is in-progress, update is forthcoming”.)
Personally, I’m most excited by the ability to customize the MangoHud performance overlay to show what I want it to show. For example, I’d like a minimal version that’s just FPS, wattage, and battery life remaining.
There’s also “slightly improved sleep resume speed,” “Improved Bluetooth connection stability, especially with multiple controllers,” lots of KDE Plasma changes to how the Linux desktop mode looks and works, and much more.
You can find the whole changelog right here.

PSL X anthem ‘X Dekho’ unveiled
- 12 hours ago

Google discontinues Nest Protect smoke alarm and Nest x Yale door lock
- 4 hours ago

The self-defeating tragedy of the Trump tariffs
- 2 hours ago

Judge dismisses Samsung’s smart ring lawsuit against Oura
- 4 hours ago

First Alert’s new smart smoke alarm is meant to be a Google Nest Protect replacement
- 4 hours ago

US tariff hikes may slow global growth: Russian central bank
- 12 hours ago

What's going on with Rafael Devers? Putting his historic strikeout streak into context
- 3 hours ago

Naqvi briefs PM Shehbaz on security, others issues
- 12 hours ago

Why has Cory Booker been talking for 19 straight hours (and counting)?
- 2 hours ago

Yale’s new smart lock can match your Google Nest doorbell
- 4 hours ago

NBA play-in tournament 2025: Schedule, standings, format
- 3 hours ago

Bueckers, Betts, Booker among Wooden finalists
- 3 hours ago