AMD Updates HDMI 2.1 VRR and ALLM Patches, but They Miss Linux 7.3
AMD’s open-source AMDGPU driver has a second patch revision for HDMI 2.1 Variable Refresh Rate and Auto Low-Latency Mode. It builds on the upstream HDMI Fixed Rate Link work; the changes are mostly cleanup and restructuring, but the DRM-next cutoff means support now targets Linux 7.4 rather than 7.3.
The series parses HDMI Forum gaming capabilities into drm_hdmi_info, bringing Radeon’s HDMI path closer to the DisplayPort feature set. Phoronix’s three-comment discussion points back to the practical significance for Linux gaming, while the mailing-list patch set remains the place to follow review.