Valve's Steam Machine Runs Linux: What Its SteamOS Desktop Mode Means for Live Wallpapers
A month ago, Valve finally shipped the Steam Machine, a compact living room gaming PC the company had been quietly working toward for years after its first, unsuccessful attempt at the idea back in 2015. It's a real product now, sitting under people's TVs, and it runs SteamOS, the same Linux-based operating system that powers the Steam Deck, not Windows. That single fact turns out to matter for more than gaming benchmarks. It means the Steam Machine has a genuine desktop hiding underneath its console-style interface, a full KDE Plasma environment you can switch into and use like any other Linux PC. That's worth taking seriously here, since a real Linux desktop is exactly the kind of environment a live wallpaper app is built for.
This isn't a marketing angle. Gloomia already ships real, signed builds on Windows, macOS, and Linux, so a new mainstream Linux device landing in a lot of living rooms is a genuinely interesting development, worth looking at honestly, including the parts that don't have a tidy answer yet.
A living room PC that finally shipped, at a price nobody expected
Valve confirmed official Steam Machine pricing on June 22, 2026, and units began arriving in the final days of that month. The specs are solid for the category: a semi-custom AMD Zen 4 APU with six cores and twelve threads clocked up to 4.8 GHz, a semi-custom RDNA 3 GPU with 28 compute units, 8GB of dedicated GDDR6 video memory, and a target of 4K gaming at 60 frames per second with FSR upscaling doing some of the work. Valve has claimed it's roughly six times more powerful than the Steam Deck, and independent GPU benchmarks have put its gaming performance somewhere around an RX 6600 or RTX 3060, respectable for a small, quiet box rather than a full tower.
The price is where things got complicated. Reporting through 2026 had pointed toward Valve targeting something close to $600 for a base model, but a global memory and storage shortage pushed DRAM and NAND prices up sharply over the course of the year, and Valve ended up shipping at $1,049 for the 512GB model without a controller, rising to $1,349 for the 2TB model and $1,428 if you want the 2TB model bundled with a Steam Controller. Valve also quietly dropped the system from a planned dual-channel memory configuration down to a single 16GB module to help control the cost increase, a change reviewers have measured as costing something like a 20 percent performance hit in memory-sensitive workloads. And if you skipped the controller bundle, Valve has told buyers not to expect the standalone Steam Controller to ship on its own before 2027. None of that is Valve's finest hour on pricing predictability, but it also isn't unique to Valve. It's the same component squeeze that's been pushing up prices across PC hardware generally this year.
What reviewers have consistently praised, independent of the pricing story, is how quiet the thing actually is. GamersNexus measured the Steam Machine at 35.4 dBA at maximum fan speed under a solid front panel, dropping to around 23 dBA at reduced fan speeds, all while keeping thermals comfortably in check. For a box meant to sit in a living room next to a TV rather than tucked under a desk, that's a genuinely deliberate design choice, and it paid off.
What "runs Linux" actually means underneath Gaming Mode
The part that matters most for anything beyond gaming is what's running under the hood. SteamOS boots by default into Gaming Mode, a console-style, controller-first interface that hides almost all of the underlying operating system, exactly like the Steam Deck. But press the Steam button, scroll to Power, and choose Switch to Desktop, and the Steam Machine drops you into a full KDE Plasma desktop: a taskbar, a file manager, a web browser, a terminal, and Discover, KDE's software center, which installs additional applications through Flatpak, the sandboxed packaging format used widely across Linux distributions.
SteamOS also runs on a read-only root file system by design, mounted with a BTRFS and OverlayFS setup across two alternating partitions, so a failed system update can roll back automatically instead of leaving the machine broken. It's a sensible choice for a console meant to survive software updates in millions of living rooms without a tech-savvy owner nearby to fix it, and it's borrowed from the same immutable-filesystem philosophy other modern Linux distributions have been moving toward. Advanced users can disable the read-only protection to install software outside the Flatpak catalog, but Valve doesn't recommend it, since it trades away some of that reliability.
So can you actually run a live wallpaper in Desktop Mode?
Technically, the pieces line up. Desktop Mode is a real KDE Plasma Linux desktop, not a stripped-down shell, which is the same broad category of environment Gloomia's own signed Linux build already targets, covered in more depth in the macOS and Linux differences guide. Installing something outside Steam's own library means going through Discover's Flatpak catalog, or, for software packaged a different way, working around the read-only root file system, the same tradeoff Steam Deck owners have been navigating in Desktop Mode for years already.
What's worth being honest about is that none of this has actually been tested on Steam Machine hardware specifically, and Valve clearly designed the thing around a controller and a TV ten feet away, not a mouse and keyboard three feet from your face. Desktop Mode exists and works, but it's a secondary surface Valve built for flexibility, not the primary way anyone is expected to use the console day to day. If you genuinely set one up as a small, quiet living room Linux PC, connected to a monitor and used like any other desktop, it behaves like one, read-only file system caveats and all. If you're mostly using it the way Valve intended, as a console sitting under a TV running full-screen games in Gaming Mode, a desktop wallpaper of any kind isn't really part of that picture at all.
That distinction also matters for one detail that's easy to miss: Gloomia already pauses and throttles itself automatically the instant a full-screen app takes over the display, precisely so a wallpaper doesn't sit there competing with a game for GPU headroom, the same behavior covered from a general gaming angle in the gaming desktop live wallpapers guide. On a machine that spends nearly all its time in a full-screen console interface, that kind of automatic pause is doing most of the relevant work regardless of what operating system happens to be underneath.
The irony of a Steam-branded console and a Steam-free wallpaper app
There's a small irony worth pointing out here. Gloomia has always been built to run with no Steam client or account required at all, a deliberate contrast covered in the Wallpaper Engine alternative piece, since the best-known live wallpaper app on the market has historically been distributed exclusively through Steam's Workshop. Valve's own new hardware, meanwhile, is obviously built around Steam from the ground up, Gaming Mode is essentially a Steam client that happens to be the entire operating system's front door. Desktop Mode is the one place on a Steam Machine where that stops being true, where you're just using a Linux computer that happens to have Steam installed on it rather than the other way around.
Thermals and noise are also worth a second look for anyone actually curious about running background rendering on this hardware for long stretches. GamersNexus's measurements, quiet operation at reduced fan speeds and comfortable junction temperatures even at maximum fan RPM, suggest the Steam Machine has real headroom to spare outside of demanding gaming workloads, which lines up with the broader point made in the battery and GPU impact guide: what actually determines the real-world cost of a continuously rendered wallpaper is the specific scene and how well the app manages GPU usage automatically, not the raw horsepower sitting idle in the box.
The bottom line, a month after launch
A month into real ownership, the clearest picture of the Steam Machine is a genuinely capable, impressively quiet living room gaming PC that arrived more expensive than early rumors promised, for reasons largely outside Valve's control. It also happens to be a real Linux computer once you step past Gaming Mode, running the same KDE Plasma desktop environment Gloomia's Linux build already targets on other machines. That doesn't make the Steam Machine a wallpaper PC, it's a console first, and its automatic full-screen pause behavior is doing the practically important work regardless of what's happening in Desktop Mode. But for the smaller group of people treating it as a genuine small-form-factor Linux desktop rather than purely a console under the TV, it's one more machine where a live wallpaper isn't a strange idea at all, it's just another Linux desktop, with all the same file system caveats any Steam Deck owner already knows well.
Frequently asked questions
What is Valve's Steam Machine, and when did it actually ship?
The Steam Machine is Valve's new living room gaming PC, a compact box built around a semi-custom AMD Zen 4 six-core, twelve-thread APU paired with a semi-custom RDNA 3 GPU with 28 compute units, 16GB of DDR5 system memory, and 8GB of GDDR6 video memory, aimed at 4K gaming at 60 frames per second with upscaling. Valve confirmed official pricing on June 22, 2026, and units began shipping in the final days of that month, after years of the project sitting dormant since Valve's first, unsuccessful Steam Machine attempt back in 2015.
What does it mean that Steam Machine runs SteamOS instead of Windows?
SteamOS is Valve's own Linux-based operating system, the same one that powers the Steam Deck. Its default Gaming Mode is a console-style, controller-driven interface, but underneath it you can switch into Desktop Mode, a full KDE Plasma desktop with a file manager, web browser, terminal, and the Discover software center for installing additional Linux applications through Flatpak, the same packaging format used across many other Linux distributions.
Can you actually run a live wallpaper app like Gloomia in Steam Machine's Desktop Mode?
Desktop Mode is a genuine KDE Plasma Linux desktop, the same broad category of environment Gloomia's real, signed Linux build already targets, so the pieces are technically there: a windowed desktop, a file system you can install software into through Flatpak, and a way to run general-purpose applications outside Steam's own library. That said, this hasn't been tested on Steam Machine hardware specifically, and Valve's read-only root file system means anything outside the Flatpak catalog requires deliberately disabling that protection, something Valve itself discourages for most users.
Why did the Steam Machine end up more expensive than people expected?
Valve had reportedly been targeting a price closer to $600 before a global memory and storage shortage drove DRAM and NAND prices up through 2026. Valve confirmed final pricing of $1,049 for the 512GB model without a controller, up to $1,428 for the 2TB model bundled with a Steam Controller, and also dropped the system to a single 16GB memory module instead of a dual-channel configuration to help control costs, a change reviewers measured as costing roughly a 20 percent performance hit in some workloads compared to the dual-channel setup Valve originally planned.
Does the Steam Machine come with the Steam Controller?
Only if you pay for the bundle that includes it, at $1,428 for the 2TB configuration. Valve has also told buyers not to expect the standalone Steam Controller accessory to ship on its own before 2027, so anyone who bought the console without the bundle is currently using a different controller or a keyboard and mouse in the meantime.
Should you actually want a live wallpaper running on a console connected to your TV?
For the machine's primary job, probably not, since it's designed to spend most of its time in full-screen Gaming Mode, and Gloomia already pauses and throttles automatically the moment a full-screen app or game takes over the display, exactly so a wallpaper doesn't compete with a game for GPU headroom. Desktop Mode is a different story: if you're genuinely using the Steam Machine as a small, quiet Linux PC connected to a monitor rather than purely as a console on your TV, it behaves like any other desktop a live wallpaper is built for.