[CCing a few people]

On 11.02.24 15:34, Ted Chang wrote:

I noticed 6.7.4  has introduced a regression for the steam deck. The LCD steam deck can no longer probe the acp5x audio chipset anymore. This regression does not affect the 6.8.x series.  I did not test kernel 6.7.3 because Opensuse tumbleweed skipped the update on my machine.

Thx for your report. FWIW, problems like this can be caused by all sorts of changes, but obviously those in the area of audio support are most likely to cause this. There are just a few in the v6.7.2..v6.7.4 range[1]. Among them a commit that is related to acp5x, that's why I CCed its author as well (Venkata Prasad Potturu).

Maybe one of the new recipients will have an idea. If not, you most likely will have to bisect this and check if mainline is affected as well.[2]

Ciao, Thorsten

[1] $ git log --oneline v6.7.2..v6.7.4 sound/ f3570675bf09af ASoC: codecs: wsa883x: fix PA volume control 2f8e9b77ca2fea ASoC: codecs: lpass-wsa-macro: fix compander volume hack 5b465d6384e4eb ASoC: codecs: wcd938x: fix headphones volume controls 1673211a38012e ASoC: qcom: sc8280xp: limit speaker volumes 242b5bffa23a9c ASoC: codecs: rtq9128: Fix TDM enable and DAI format control flow 2c272ff9859601 ASoC: codecs: rtq9128: Fix PM_RUNTIME usage 4a28302b2c681e ALSA: hda/conexant: Fix headset auto detect fail in cx8070 and SN6140 e37a96941fdd53 ALSA: hda: intel-dspcfg: add filters for ARL-S and ARL ffa3eea886c6fe ALSA: hda: Intel: add HDA_ARL PCI ID support 4b6986b170f2f2 ASoC: amd: Add new dmi entries for acp5x platform e38ad4ace20b4d ALSA: hda: Refer to correct stream index at loops a434c75e0671f9 soundwire: fix initializing sysfs for same devices on different buses

[2] I'm working on a guide that describes what's needed: https://www.leemhuis.info/files/misc/How%20to%20bisect%20a%20Linux%20kernel%...

Steps to reproduce the problem

1. Obtain a steam deck
2. Install kernel 6.7.4
3. Boot the device and you will see dummy output in gnome shell

Observed kernel logs.

[ 8.755614] cs35l41 spi-VLV1776:00: supply VA not found, using dummy regulator [ 8.760506] cs35l41 spi-VLV1776:00: supply VP not found, using dummy regulator [ 8.777148] cs35l41 spi-VLV1776:00: Cirrus Logic CS35L41 (35a40), Revision: B2 [ 8.777471] cs35l41 spi-VLV1776:01: supply VA not found, using dummy regulator [ 8.777532] cs35l41 spi-VLV1776:01: supply VP not found, using dummy regulator [ 8.777709] cs35l41 spi-VLV1776:01: Reset line busy, assuming shared reset [ 8.788465] cs35l41 spi-VLV1776:01: Cirrus Logic CS35L41 (35a40), Revision: B2 [ 8.877280] snd_hda_intel 0000:04:00.1: enabling device (0000 -> 0002) [ 8.877595] snd_hda_intel 0000:04:00.1: Handle vga_switcheroo audio client [ 8.889913] snd_acp_pci 0000:04:00.5: enabling device (0000 -> 0002) [ 8.890063] snd_acp_pci 0000:04:00.5: Unsupported device revision:0x50 [ 8.890129] snd_acp_pci: probe of 0000:04:00.5 failed with error -22 [ 8.906136] snd_hda_intel 0000:04:00.1: bound 0000:04:00.0 (ops amdgpu_dm_audio_component_bind_ops [amdgpu]

No kernel module in use shown.

04:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. [AMD] ACP/ACP3X/ACP6x Audio Coprocessor [1022:15e2] (rev 50) Subsystem: Valve Software Device [1e44:1776] Flags: fast devsel, IRQ 70, IOMMU group 4 Memory at 80380000 (32-bit, non-prefetchable) [size=256K] Capabilities: <access denied> Kernel modules: snd_pci_acp3x, snd_rn_pci_acp3x, snd_pci_acp5x, snd_pci_acp6x, snd_acp_pci, snd_rpl_pci_acp6x, snd_pci_ps, snd_sof_amd_renoir, snd_sof_amd_rembrandt, snd_sof_amd_vangogh, snd_sof_amd_acp63

Information for package kernel-default:

Repository : openSUSE-Tumbleweed-Oss Name : kernel-default Version : 6.7.4-1.1 Arch : x86_64 Vendor : openSUSE Installed Size : 240.3 MiB Installed : Yes Status : up-to-date Source package : kernel-default-6.7.4-1.1.nosrc Upstream URL : https://www.kernel.org/ https://www.kernel.org/ Summary : The Standard Kernel Description : The standard kernel for both uniprocessor and multiprocessor systems.

Source Timestamp: 2024-02-06 05:32:37 +0000
GIT Revision: 01735a3e65287585dd830a6a3d33d909a4f9ae7f
GIT Branch: stable

Handle 0x0000, DMI type 0, 26 bytes BIOS Information Vendor: Valve Version: F7A0120 Release Date: 12/01/2023 Address: 0xE0000 Runtime Size: 128 kB BIOS Revision: 1.20 Firmware Revision: 1.16

#regzbot introduced: v6.7.2..v6.7.4