It's Easy Getting Intel Graphics To Work On SteamOS
While Valve only advertises NVIDIA graphics driver support in the SteamOS Beta released on Friday, I already found that AMD Radeon GPUs work with Catalyst on this Debian Linux derived OS. With a simple tweak, Intel HD Graphics can also run quite fine on SteamOS.
Initially when trying to use Intel Ivy Bridge and Haswell HD Graphics on SteamOS, on boot it would just be a black screen... My experiences were also the same as what others have reported. Fortunately, with being well experienced with Linux graphics driver issues, etc, it was easy to figure out and correct the problem.
SteamOS is forcefully disabling the DRM drivers from providing kernel mode-setting support. The open-source Intel, Radeon, and Nouveau (NVIDIA) drivers effectively require kernel mode-setting (KMS) for any level of graphics support on the modern Linux desktop, but SteamOS is setting nomodeset when booting the kernel.
Mesa 10.0 will be pushed soon since it has OpenGL 3.3 support, Radeon / Intel / Nouveau performance improvements, and other new features.
7-Way NVIDIA SteamOS graphics card comparison. I do have a Windows 8.1 vs. SteamOS comparsion that's forthcoming on Phoronix.
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