Linux 7.4-rc2 includes sound subsystem fixes and AMDGPU HDMI 2.2 improvements
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Linux 7.4-rc2 introduces several sound subsystem fixes for various laptops and improves HDMI 2.2 FRL support for the AMDGPU driver, reports say.
The Linux 7.4-rc2 kernel release scheduled for November 2026 includes numerous sound subsystem fixes and device workarounds sent by maintainer Takashi Iwai, reports say. These changes include support for HP models 8EF5, 8F6D, 8FA4, 8FA5, and 9056 using the AMD Audio Co-Processor 7.0 with the TAS2783 codec. Other hardware fixes address popping noises on the ASUS PRIME B650M-K, enables bass speakers on the Alienware m17 R3, and adds audio support for the HP OmniBook 7 Laptop 16-ay0xxx.
Several device-specific quirks are included to address hardware limitations. The HP OmniBook 3 16-by0xxx requires a DMI quirk to expose its internal microphone, and the Acer Predator PHN16-71 needs a quirk for the Realtek ALC245 codec to detect external headset microphones on the 3.5mm jack. The Lenovo V15 AMN G6 (83VD and 84CS) also uses a quirk to make the DMIC capture device available.
The AMDGPU driver is also receiving improvements. While Linux 7.4 enables HDMI 2.1 FRL by default to support higher resolutions and refresh rates along with FreeSync/VRR and ALLM, new fixes for Linux 7.4 improve Fixed Rate Link support for the HDMI 2.2 specification, reports say.
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