No sound from ALC236 upon warm boot

[Joseph Sible]

On an HP 15z-fc000 laptop with Realtek ALC236 audio, on Ubuntu 22.04.3 with HWE kernel 6.2.0-34-generic, after doing a warm boot (i.e., "Restart" from the menu" or "sudo reboot"), no sound will be able to play. Doing a cold boot (i.e., "Power Off" or "sudo poweroff" and then pressing the power button to turn it back on) will make it start working again.

This bug is a regression caused by commit 5aec98913095 ("ALSA: hda/realtek - ALC236 headset MIC recording issue").

I've already worked with upstream to get a fix for this bug into the mainline kernel, which has since landed as commit 69ea4c9d02b7 ("ALSA: hda/realtek - remove 3k pull low procedure"), with commit 46cdff2369cb ("ALSA: hda/realtek - Remodified 3k pull low procedure") as a follow-up. To fix this bug, those two commits just need to be cherry-picked into Ubuntu's kernel.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-6.2.0-34-generic 6.2.0-34.34~22.04.1
ProcVersionSignature: Ubuntu 6.2.0-34.34~22.04.1-generic 6.2.16
Uname: Linux 6.2.0-34-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 7 21:12:27 2023
InstallationDate: Installed on 2023-10-08 (0 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.2)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-6.2
UpgradeStatus: No upgrade log present (probably fresh install)

[Joseph Sible (josephcsible)]

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2037005 contained commit 69ea4c9d02b7 ("ALSA: hda/realtek - remove 3k pull low procedure"), and https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2039110 contained commit 46cdff2369cb ("ALSA: hda/realtek - Remodified 3k pull low procedure").