[regression] Headphone output gets unproperly powered down - Mi Notebook Pro 2020 (ALC256) (fwd of b.k.o bug #215484; starting with 5.14.14)
Hi, this is your Linux kernel regression tracker speaking.
I'm forwarding a regression reported in bugzilla.kernel.org to the list, to make sure all parties interested in this are aware of it. The reporter is CCed. Not CCing the stable list in this case, as 5.14 is EOL already.
https://bugzilla.kernel.org/show_bug.cgi?id=215484
With headphones (or an auxiliary jack) plugged in, the audio output is fine when anything is playing, but when that's stopped a loud pop can be heard after some seconds and if the jack is connected to an external amplifier it gets really noisy. Everything gets back to normal whenever audio playback is resumed, although with another loud pop at the start.
This has been happening since kernel 5.14.14, whereas 5.14.13 is fine. I suspect it has to do with the ALC256 mute logic implemented in that version (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/diff/sound/...)
OS: Fedora Linux 35 Kernel: 5.16.0-60 Vanilla Hardware: Xiaomi Mi Notebook Pro Enhanced 2020 (i7 10510U, ALC256)
Ciao, Thorsten
#regzbot introduced v5.14.13..v5.14.14 #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215484 #regzbot from: Emanuele Melzi itsbytebites@tutanota.com
Hi, this is your Linux kernel regression tracker. Top-posting for once, to make this easily accessible to everyone.
Could anybody please finally look into this bisected regression from 5.14.13 to 5.14.14 (f8d3c17e1c37 ("ALSA: hda/realtek - ALC236 headset MIC recording issue")) that according to a recent bugzilla comment from reporter is still present in recent 5.16 kernels?
Ciao, Thorsten
On 12.01.22 08:15, Thorsten Leemhuis wrote:
Hi, this is your Linux kernel regression tracker speaking.
I'm forwarding a regression reported in bugzilla.kernel.org to the list, to make sure all parties interested in this are aware of it. The reporter is CCed. Not CCing the stable list in this case, as 5.14 is EOL already.
https://bugzilla.kernel.org/show_bug.cgi?id=215484
With headphones (or an auxiliary jack) plugged in, the audio output is fine when anything is playing, but when that's stopped a loud pop can be heard after some seconds and if the jack is connected to an external amplifier it gets really noisy. Everything gets back to normal whenever audio playback is resumed, although with another loud pop at the start.
This has been happening since kernel 5.14.14, whereas 5.14.13 is fine. I suspect it has to do with the ALC256 mute logic implemented in that version (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/diff/sound/...)
OS: Fedora Linux 35 Kernel: 5.16.0-60 Vanilla Hardware: Xiaomi Mi Notebook Pro Enhanced 2020 (i7 10510U, ALC256)
Ciao, Thorsten
#regzbot introduced v5.14.13..v5.14.14 #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215484 #regzbot from: Emanuele Melzi itsbytebites@tutanota.com
Hi Thorten,
On Mon, Mar 21, 2022 at 2:48 PM Thorsten Leemhuis regressions@leemhuis.info wrote:
Hi, this is your Linux kernel regression tracker. Top-posting for once, to make this easily accessible to everyone.
Could anybody please finally look into this bisected regression from 5.14.13 to 5.14.14 (f8d3c17e1c37 ("ALSA: hda/realtek - ALC236 headset MIC recording issue")) that according to a recent bugzilla comment from reporter is still present in recent 5.16 kernels?
I just asked the affected user to test my patch. Once it's tested I'll send it out.
Kai-Heng
Ciao, Thorsten
On 12.01.22 08:15, Thorsten Leemhuis wrote:
Hi, this is your Linux kernel regression tracker speaking.
I'm forwarding a regression reported in bugzilla.kernel.org to the list, to make sure all parties interested in this are aware of it. The reporter is CCed. Not CCing the stable list in this case, as 5.14 is EOL already.
https://bugzilla.kernel.org/show_bug.cgi?id=215484
With headphones (or an auxiliary jack) plugged in, the audio output is fine when anything is playing, but when that's stopped a loud pop can be heard after some seconds and if the jack is connected to an external amplifier it gets really noisy. Everything gets back to normal whenever audio playback is resumed, although with another loud pop at the start.
This has been happening since kernel 5.14.14, whereas 5.14.13 is fine. I suspect it has to do with the ALC256 mute logic implemented in that version (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/diff/sound/...)
OS: Fedora Linux 35 Kernel: 5.16.0-60 Vanilla Hardware: Xiaomi Mi Notebook Pro Enhanced 2020 (i7 10510U, ALC256)
Ciao, Thorsten
#regzbot introduced v5.14.13..v5.14.14 #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215484 #regzbot from: Emanuele Melzi itsbytebites@tutanota.com
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Kai-Heng Feng -
Thorsten Leemhuis