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AMD Posts HDMI 2.1 FRL Patches To Linux Kernel With Disabled Default

AMD releases sixth revision of HDMI 2.1 FRL and DSC patches for open-source AMDGPU Linux driver, keeping FRL disabled by default until VRR support is ready.

By Anthony York

Published May 21, 2026 8:42 PM

AMD has released the sixth revision of its HDMI 2.1 Frame Rate Low Latency and Display Stream Compression patches for the open-source AMDGPU Linux driver.

FRL disabled by default until Variable Refresh Rate support lands

The company disabled FRL support by default in this update to prevent issues until Variable Refresh Rate functionality becomes available.

Users who want to test or use the new feature must manually enable it during boot using the kernel parameter amdgpu.dc_feature_mask=0x400.

Enabling FRL without VRR is considered a regression for users with compatible displays, so AMD will likely enable the feature by default once VRR support lands.

Anthony York

Covers gaming, PC hardware and technology. His interest in computers began during the Intel Core 2 Duo era, when he learned the basics of PC building, tuning and overclocking. Pushing one of those CPUs close to a 100% overclock helped shape his long-term interest in overclocking.

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