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By Zayden R., September 11, 2026
Linux 7.4 will enable HDMI 2.1 support by default for the AMDGPU driver, bringing FreeSync, VRR, and ALLM. This is crucial for gamers and developers using AMD hardware on Linux.
Linux 7.4 is set to bring HDMI 2.1 support by default for the AMDGPU driver, a significant update for users who rely on AMD hardware. This release will include support for FreeSync, Variable Refresh Rate (VRR), and Auto Low Latency Mode (ALLM), features that gamers and multimedia developers have eagerly anticipated.
The journey to HDMI 2.1 support has been a long one, complicated by the HDMI Forum's initial rejection of the open-source implementation for AMDGPU. However, speculation suggests Valve's involvement may have played a role in advancing these patches. Earlier this year, the Fixed Rate Link (FRL) patches for HDMI 2.1 appeared, specifically targeting higher resolutions and refresh rates, which were first integrated into Linux 7.2.
The upcoming Linux 7.4 cycle promises to incorporate the bulk of this work, enhancing the experience for gamers who demand smoother visuals and lower latency. The inclusion of ALLM is particularly noteworthy, as it allows for reduced latency on compatible monitors and TVs, making it a boon for gaming experiences.
The pull request for the AMDGPU driver in Linux 7.4 not only includes HDMI 2.1 features but also brings updates for the AMD GFX12.1 graphics engine, DCN 6 display engine, and SMU 15 IP. These additions indicate AMD's commitment to maintaining robust support for their graphics hardware on Linux.
As the merge window for Linux 7.4 opens in late October, users can expect these enhancements to be part of a release around the end of 2026 or early January. This update is a solid improvement for those invested in the Linux gaming ecosystem, especially with the anticipated compatibility for Valve's upcoming Linux-based hardware.