Linux 7.4-rc2 Adds Sound Fixes and Device Quirks
The sound subsystem batch for the Linux 7.4-rc2 kernel adds device support, DMI quirks and bug fixes from maintainer Takashi Iwai.
Updated on Nov. 6, 2026 in Computers
Takashi Iwai, a SUSE engineer who maintains the Linux sound subsystem, sent a batch of sound fixes for the Linux 7.4-rc2 kernel release. The batch includes support for more devices using AMD ACP 7.0 with the TAS2783 codec, along with several laptop and motherboard quirks.
Why it matters
Sound support for specific laptops and motherboards depends on kernel-level quirks and codec drivers, so these fixes determine whether internal microphones, speakers and mute indicators work for affected users. The batch is part of the regular pre-release process that prepares the kernel for broader testing.
The batch adds AMD ACP 7.0 support with the TAS2783 codec for five HP board IDs and a Tegra268 HDMI/DP codec ID for the TegraHDMI driver. It also includes quirks for specific HP OmniBook, ENVY, ZBook, Alienware and Acer Predator models, but the source does not report how many devices each quirk affects.
The players
Takashi Iwai
Takashi Iwai is an engineer at SUSE who maintains the Linux sound subsystem and submits its fixes to the kernel.
SUSE
SUSE is a Linux distribution company whose engineer maintains the Linux sound subsystem.
The details
Iwai sent the sound fixes as a pull request for the Linux 7.4-rc2 release, covering device quirks, audio fixes and LED support across several laptop and desktop models. The changes address issues such as a popping noise on the ASUS PRIME B650M-K and external headset microphone detection on the Acer Predator PHN16-71.
Timeline
November 6, 2026: Sound subsystem fixes batch for Linux 7.4-rc2 published.
This weekend: Linux 7.4-rc2 kernel release expected.
The Tech Race
The batch extends support for AMD's ACP 7.0 audio co-processor, which is the audio block built into recent AMD platforms, to more HP systems and adds the TAS2783 codec for those devices. The work fits the ongoing effort to bring laptop audio hardware from new AMD platforms into the mainline Linux kernel.
Owners of the listed HP, Alienware and Acer laptops may see working internal microphones, speaker support and mute LEDs once the fixes reach their Linux distribution's kernel. The fixes will only help users who run Linux on these devices and update to a kernel that includes the batch.
The takeaway
Users of Linux on the affected HP, Alienware, Acer and ASUS systems should check their kernel version after Linux 7.4 ships, since many of these hardware fixes arrive only in newer kernels.
Further reading
Read more about Computers stories and developments.
Source note: This article includes information reported by Phoronix.
