It is necessary to correct the myth about the relationship between SteamOS and Arch Linux. The two cannot be equated, and using SteamOS does not mean you can say “I use Arch btw.”
Recently, while playing Galgame on Arch Linux, under almost identical testing conditions, Steam games’ Proton kept crashing for inexplicable reasons until I was annoyed. Going back to Debian made everything fine, so let me talk about this issue.
In my humble opinion, rolling-release distributions such as Arch Linux & CachyOS are not suitable for gaming. Semi-rolling releases such as Fedora & Bazzite are not suitable either. Only battle-tested Debian Stable or Ubuntu LTS are trustworthy. I really do not know how I dared to play games on Arch Linux in the past, but now I use Debian.
Another consideration is that when reporting game compatibility to ProtonDB, I hope to use a traceable and stable system version. The testing platform should be stable, not a system that keeps changing.
According to information from the SteamOS official website, although SteamOS after 3.0 is indeed developed based on Arch Linux, SteamOS is an immutable system. Users cannot, and should not, modify system files. Every system OTA update downloads a new image to overwrite the old version. Also, SteamOS is not a rolling release. The system update schedule is decided by Valve, a commercial company, not by Arch Linux’s rolling updates.
Valve has its own Steam Deck & Steam Machine product experience to take care of. It wants SteamOS to become a reference console platform, so updates cannot be too aggressive. For example, in 2026, the stable SteamOS 3.7.8 desktop mode still uses KDE 5.27, while Arch Linux’s KDE 6.0 was released back in 2024. KDE 6 in SteamOS 3.8.0 is still in beta. At present, the strategy of SteamOS’s main screen compositor, Gamescope, is to run X11 games through XWayland while also enjoying Wayland HDR support, a stitched-together strategy. Whether it can move toward pure Wayland in the future remains a huge question mark.
Valve must ensure the “entire” SteamOS system and Steam client are stable before releasing updates.
On the other hand, according to the Arch Wiki, Arch Linux’s software update schedule is not fixed. Each piece of software has different maintainers, and the open source community releases it when they think it is stable, letting the whole public beta-test and catch bugs. The testing time is not long enough.
The benefit of this approach is that problems can be discovered and fixed quickly. The downside is that nobody can guarantee whether the current system is completely stable, because there are too many variables.
Arch Linux in its freshly installed state has no graphical interface at all. There is no so-called “default”, no “whole”, and therefore it is hard to do comprehensive testing before releasing updates. A small package update may blow up the KDE desktop.
On Arch Linux, the Steam client is modified by the open source community based on the installer released by Valve. Even though the Steam client itself has its own Runtime to satisfy Proton execution and tries not to depend on OS libraries, components of the Arch Linux system still affect the Steam client, and random problems can occur.
From the perspective of release model, SteamOS is still much more stable than a crowd of rolling Linux distributions. It is hard for any rolling-release distribution to approach the SteamOS experience while also being stable.
At present, SteamOS still only supports a few specific hardware devices. If they really release an open source general-purpose x86 image in the future, I wonder whether their Github issue tickets will explode……
