SteamOS

Last updated

SteamOS
SteamOS Logo.png
KDE Plasma 5.23 on Steam Deck Desktop screenshot.png
SteamOS 3.0 "holo" with the default Plasma desktop running on the Steam Deck
Developer Valve, Collabora [1]
OS family Linux (Unix-like)
Working stateCurrent
Source model Open source base system with closed source components
Initial releaseDecember 13, 2013;10 years ago (2013-12-13)
Latest release 3.5.17 (February 29, 2024;41 days ago (2024-02-29) [2] ) [±]
Latest preview 3.5.17 Preview (February 29, 2024;41 days ago (2024-02-29) [3] ) [±]
Repository repo.steampowered.com/steamos/ (Contains only up to SteamOS 2.0)
Marketing targetGaming, entertainment
Available in Various
Package manager
Platforms x86-64
Kernel type Monolithic (Linux)
Userland GNU
Default
user interface 		Steam (gaming mode)
Plasma (desktop mode)
Official website SteamOS

SteamOS is a Linux distribution developed by Valve. It incorporates Valve's popular namesake Steam video game storefront and is the primary operating system for the Steam Deck, Valve's portable gaming device, as well as Valve's earlier Steam Machines. SteamOS is open source with some closed source components.

Contents

SteamOS was originally built as a client for video game streaming over a local network from a gaming PC and was later extended to support some on-device gameplay, with the intent for lightweight, upgradeable PCs, known as Steam Machines, to run SteamOS for game streaming and local play. SteamOS versions 1.0, released in 2013, and 2.0, released in 2015, were based on the Debian distribution of Linux with GNOME desktop. [6] Valve encouraged developers to incorporate Linux compatibility into their releases to better support Linux gaming options, including SteamOS, with mixed success.

In February 2022, Valve released the Steam Deck gaming handheld, running a dramatically updated version of SteamOS, version 3.0, based on the Arch Linux distribution with the KDE Plasma environment pre-installed, as well as Valve's Proton compatibility layer, allowing many games designed for Windows to run natively on SteamOS. [7] [8]

History

During a panel at LinuxCon on September 16, 2013, Valve co-founder and executive director Gabe Newell stated that he believed "Linux and open source are the future of gaming", going on to say that the company was aiding game developers who want to make games compatible with Linux, and that they would be making an announcement the following week related to introducing Linux into the living room. [9] On September 20, 2013, Valve posted a statement on its website titled The Steam Universe is Expanding in 2014 which teased three new announcements related to "even more ways to connect the dots for customers who want Steam in the living-room". [10] [11] The first announcement was made on September 23 as SteamOS, with Valve saying they had "come to the conclusion that the environment best suited to delivering value to customers is an operating system built around Steam itself". [12] A large focus of the reveal was the openness of the operating system, with it being announced that users would be able to alter or replace any part of the software, and that it would be free. [13]

In October 2013, Valve announced Steam Dev Days; a two-day developer conference where video game developers could test and provide feedback on SteamOS and prototype Steam Machines. [14] In October 2013, Nvidia also announced their collaboration with Valve to support SteamOS with the help of a development suite called Nvidia GameWorks, incorporating PhysX, OptiX, VisualFX and other Nvidia-proprietary APIs and implementations thereof. [15]

Versions 1.0 and 2.0

In November 2013, Valve confirmed that they would not be making any exclusive games for SteamOS, and discouraged other developers from doing so, as it goes against their philosophy of selling games wherever customers are. [16] In December, Valve announced that a beta version of SteamOS would be released on December 13, 2013. [17] When this beta version (dubbed SteamOS 1.0) released, Valve encouraged customers unfamiliar with Linux to wait until 2014, and the release of SteamOS 2.0. [18]

Originally, video content such as television, movies and music were only available on SteamOS through Steam's store, which offered only a small number of films, or locally stored content. In October 2015, an update allowed Netflix and other DRM protected content to function in the native built-in browser. [19] SteamOS 2.0 installations recommended an Intel or AMD 64-bit capable processor, at least 4 gigabytes of RAM, 200 GB on one's hard disk, either an AMD Radeon 8500 or newer or an Nvidia Fermi graphics card (GeForce 400 series and GeForce 500 series) or newer, [20] a USB port and UEFI boot support. [21] A custom installer method was also made available through Valve's repositories, which could require additional configuration steps, allowing for smaller hard-disk sizes and non-UEFI motherboards. [22] [23]

In mid-October 2015, preorders of the Steam Controller, [24] Steam Link, [25] and Alienware branded Steam Machines became available. [26] The official release date for Steam Machines was November 10, 2015. [27] In the following years, reliance by game engines on proprietary Windows APIs, as well as steadily more efficient computer hardware, made SteamOS an obstacle to the success of Steam Machines, which declined in popularity throughout the latter half of the decade relative to platforms such as mobile gaming and handheld consoles. [28]

Version 3.0

On July 15, 2021, Valve announced the Steam Deck, [29] a brand-new handheld PC gaming device, which would run a new and substantially different version of SteamOS, version 3.0. This new version is based upon Arch Linux, with the KDE Plasma 5 desktop environment pre-installed to allow users to customize their systems. [8] The decision to move from Debian to Arch Linux was based on the different update schedule for these distributions; Debian, geared for server configurations, updates core OS software in one large release, with intermediate patches for known bugs and security fixes, while Arch uses a rolling update approach for all parts. Valve found that using Arch's rolling updates as a base would be better suited for the Steam Deck, allowing them to address issues and fixes much faster than Debian would allow. [30] SteamOS itself is not rolling release. Valve affirmed that SteamOS 3.0 will continue to be freely available, with the intention of allowing other hardware developers to take advantage of it and build similar handheld computing devices like the Deck. [31]

With the release of Version 3.0, older versions of SteamOS are no longer supported and are not maintained. Valve has not released a version of SteamOS 3.0 intended for devices other than the Steam Deck, though community resources exist for installing it onto commercial hardware. [32]

Features

SteamOS is designed primarily for playing video games made for PC away from a traditional computer, such as on a television or a handheld device. It does this by providing a console-like experience, including quality of life features and a streamlined user interface, on top of an operating system that targets generic PC hardware which can be housed in any form factor. The first versions of SteamOS could run games developed natively for Linux, as well as stream games from Windows, Mac or Linux computers. Version 3.0 utilizes Valve's Proton compatibility layer to run a variety of games originally developed for Windows. While SteamOS supports Linux-native package managers, the primary software distribution method for SteamOS is the Steam storefront also used to distribute games to other operating systems. Some features, such as family sharing and parental restrictions, handled by Steam's desktop client on other operating systems, were moved into SteamOS. [33] Valve claimed that it had "achieved significant performance increases in graphics processing" on the first two versions of SteamOS prior to the maturation of Proton. [34] The operating system is open source, allowing users to build on or adapt the source code, though the actual Steam client is closed. [35] [36]

As SteamOS was intended for playing games without a mouse or keyboard, the first two versions did not have many built-in functions beyond web browsing and playing games. As of Version 3.0, users may freely access the KDE Plasma 5 desktop environment and perform tasks such as installing other software. [37] Version 3.0 still utilizes an immutable file system, with only the user's home directory being writeable, but allows full permissions for solutions such as containerization and chroot for user programs requiring root access. The OS natively supports Nvidia, Intel, and AMD graphics processors. [38] [39] Version 3.0 added full support for peripheral devices, allowing SteamOS devices such as the Deck to be used as conventional PCs.

Version 3.0 is based on Arch Linux, rather than Debian, with some customizations. The OS includes Gamescope, which is a gaming-oriented microcompositor designed to optimize display on the Steam Deck. [40] [41]

Releases and performance

ReleaseCodenameBase distributionDateNotes
SteamOS 1.0 (Beta)alchemist [42] Debian 7 (Wheezy) December 2013
SteamOS 2.0brewmaster [42] Debian 8 (Jessie) November 2015Major changes compared to SteamOS 1.0 [43]
  • Various third-party drivers and updated graphics stack
  • Updated kernel tracking the 4.1 longterm branch
  • Custom graphics compositor
  • Auto-update from the Valve SteamOS repositories
SteamOS 3.0clockwerk [42] Debian 9 (Stretch) N/ANot published as of 2021, [44] cancelled. [45]
holo [46] [47] Arch Linux [45] March 2022Only available as the system image for the Steam Deck.
Includes Proton Windows-compatibility layer

SteamOS 1.0

In December 2013, Phoronix compared three Nvidia graphics cards on SteamOS 1.0 beta and Windows 8.1 Pro. [48] Overall, Nvidia's proprietary Linux graphics driver delivered performance comparable to that of the Windows drivers due to the platforms’ largely shared codebase.

In January 2014, GameSpot compared the performance of three games ( Dota 2 , Left 4 Dead 2 , and Metro: Last Light ) running on Windows 7 x64 and SteamOS 1.0 beta. With an AMD graphics card, they found that all ran at considerably fewer frames per second on SteamOS, and Left 4 Dead 2 stuttered, which they attributed to a device driver problem. With an Nvidia graphics card, they found that Metro: Last Light ran at a slightly higher frame rate and Dota 2 broke even. [lower-alpha 2] With both video card brands, Left 4 Dead 2 and Dota 2 had longer load times on SteamOS. [49]

SteamOS 2.0

When Steam Machines were officially released in November 2015, Ars Technica compared the rendering performance of cross-platform games on SteamOS 2 and Windows 10 running on the same machine, using average frame-per-second measurements, and found that games rendered between 21% and 58% slower on SteamOS 2. Ars Technica suggested this might be due to the inexperience of developers optimizing on OpenGL in contrast to DirectX, and believed that the performance might improve with future titles. [50] They noted that their benchmark test, using six games on a single computer, was far from comprehensive.

SteamOS 3.0

In March 2022, Linus Tech Tips compared SteamOS 3.0 and Windows 10 performance on the Steam Deck using three gaming benchmarks (including Hitman 3 , Doom Eternal , and Elden Ring ) showing all three titles having a higher average frames per second on SteamOS compared to Windows 10. Hitman 3 delivered a 19 fps average for Windows 10 and a 34 fps average for SteamOS 3. In Doom Eternal, SteamOS 3 hit a 60 fps average while Windows hit a 47 fps average. Elden Ring on SteamOS topping out at 37 fps average while running on Windows 10 at a 30 fps average. [51] [52]

Reception

Following SteamOS’ initial announcement, many video game developers expressed enthusiasm. Minecraft creator Markus Persson described it as "amazing news," and Thomas Was Alone developer Mike Bithell called it "encouraging" for indie games. [53] [54] Other developers such as DICE, creators of the Battlefield series, and The Creative Assembly, developers of the Total War series, stated that they may add Linux support for their games following SteamOS’ release. [55] [56]

On the operating system front, Gearbox Software head Randy Pitchford expressed a belief that the operating system needed a unique application to attract developers, saying "without that must-buy product driving us all towards this stuff, I expect that the industry at large will watch curiously, but remain largely unaffected." [57] Richard Stallman, former president of the Free Software Foundation, expressed cautious support, but did not condone the use of non-free games or DRM. [58]

The SteamOS beta release received mixed reviews. In TechRadar's review Henry Winchester praised the easy to navigate interface and future potential but criticized the hard installation and lack of extra features compared to the Steam software. [59] Eurogamer's Thomas Morgan did not experience installation problems, but commented negatively on the lack of options available for detecting monitor resolutions and audio output, in addition to the lack of games available natively on the operating system. However, he responded well to the user interface, calling it "a positive start". [60]

Since then, outlets such as Ars Technica have revisited the SteamOS since its initial debut, offering observations on the platform's growth, pros, and cons. [61] Both Falcon Northwest and Origin PC, computer manufacturers that were planning on offering Steam Machine hardware, opted to not ship a SteamOS-enabled machine in 2015 due to limitations of SteamOS over Windows; Falcon Northwest said they would still consider shipping machines with SteamOS in the future if performance improves. [62] [63]

See also

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