* ucm2: Qualcomm: x1e80100: Surface11-HiFi: disable DP RX mixer routes by default
[not found] <alsa-project/alsa-ucm-conf/pr/889@alsa-project.org>
@ 2026-10-23 17:30 ` GitHub pull_request - opened
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From: GitHub pull_request - opened @ 2026-10-23 17:30 UTC (permalink / raw)
To: alsa-devel
alsa-project/alsa-ucm-conf pull request #889 was opened from ramonjesusmiranda-debug:
SectionVerb in `Surface11-HiFi.conf` unconditionally enables the `DISPLAY_PORT_RX_0` and `DISPLAY_PORT_RX_1` Audio Mixer routes (`MultiMedia3` and `MultiMedia4`), and `SectionDevice."HDMI0"` / `"HDMI1"` lack a `DisableSequence`.
When PipeWire / WirePlumber starts or probes the card with no external DisplayPort monitor attached, opening `MultiMedia3` / `MultiMedia4` triggers 44 to 54 errors in `dmesg` on every start/restart:
```
hdmi-audio-codec hdmi-audio-codec.2.auto: ASoC: error at snd_soc_dai_startup on i2s-hifi: -22
```
Keep the DisplayPort mixer routes disabled (`0`) in `SectionVerb` and add the matching `DisableSequence` to `HDMI0` and `HDMI1` so they are only enabled when an external DisplayPort audio sink is actually selected.
Tested on a Microsoft Surface Pro 11 OLED (X1E80100).
Signed-off-by: Ramón Jesús Miranda <ramonjesusmiranda@gmail.com>
Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/889
Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/889.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf
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[not found] <alsa-project/alsa-ucm-conf/pr/889@alsa-project.org>
2026-10-23 17:30 ` ucm2: Qualcomm: x1e80100: Surface11-HiFi: disable DP RX mixer routes by default GitHub pull_request - opened
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