* Re: [REGRESSION][HDA] Speaker silence on 7.2-rc6: Converter channel allocation misconfigured (channel=0 instead of channel=2)
[not found] <CAKtWk0Yo4g19a3HwMhRsGyakzRhfnBjp3sv_DfdF_3QsWS5ybA@mail.gmail.com>
@ 2026-08-08 15:19 ` Takashi Iwai
0 siblings, 0 replies; only message in thread
From: Takashi Iwai @ 2026-08-08 15:19 UTC (permalink / raw)
To: Zhang DM; +Cc: alsa-devel
On Sat, 08 Aug 2026 14:59:34 +0200,
Zhang DM wrote:
>
>
> Hardware Profile:
>
> Laptop: ASUS Zenbook S 16 (UM5606WA)
>
> Board/Model: ASUSTeK COMPUTER INC. UM5606WA (Firmware UM5606WA.321)
>
> Codec: Realtek ALC294 (Subsystem ID: 1043:1df3, PCI: 1022:15e3 at c4:00.6)
>
> Regression Details:
>
> Good Kernel: Linux 7.1.6 / earlier releases (Onboard analog audio out/mic
> function as expected)
>
> Bad Kernel: Linux 7.2.0-rc6 (7.2.0-rc6-1-cachyos-rc)
>
> Control Observation: External USB Audio (Moondrop Edge 2, snd-usb-audio)
> functions without issue. The regression is isolated to the onboard
> snd_hda_intel / Realtek ALC294 initialization chain.
>
> Technical Analysis & Diff: Comparing the ALC294 codec state between the
> working baseline and -rc6 shows an improper converter stream mapping in -rc6.
> The active output widgets (Node 0x02 [Headphone] and Node 0x03 [Speaker]) are
> assigned an unexpected stream ID (stream=5), causing silent output or stream
> routing failure.
Hm, I couldn't find any relevant change specific to your device
through a quick glance. At best, please do git-bisect.
thanks,
Takashi
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