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Bug#1108069: [regression] Builtin recognized microphone Asus X507UA does not record

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Hi Igor,

[For context, there was a regression report in Debian at
https://bugs.debian.org/1108069]

On Thu, Jun 19, 2025 at 09:36:13PM -0500, Igor Tamara wrote:
> Package: src:linux
> Version: 6.12.32-1
> Severity: normal
> Tags: a11y
> 
> Dear Maintainer,
> 
> The builtin microphone on my Asus X507UA does not record, is
> recognized and some time ago it worked on Bookworm with image-6.1.0-31,
> newer images are able to record when appending snd_hda_intel.model=1043:1271
> to the boot as a workaround.
> 
> The images that work with the boot option appended are, but not without
> it are:
> 
> linux-image-6.15-amd64
> linux-image-6.12.32-amd64 
> linux-image-6.1.0-37-amd64
> linux-image-6.1.0-0.a.test-amd64-unsigned_6.1.129-1a~test_amd64.deb 
> referenced by https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1100928
> Also compiled from upstream 6.12.22 and 6.1.133 with the same result
> 
> The image linux-image-6.1.0-31-amd64 worked properly, the problem was
> introduced in 129 and the result of the bisect was
> 
> d26408df0e25f2bd2808d235232ab776e4dd08b9 is the first bad commit
> commit d26408df0e25f2bd2808d235232ab776e4dd08b9
> Author: Kuan-Wei Chiu <visitorckw@gmail.com>
> Date:   Wed Jan 29 00:54:15 2025 +0800
> 
>     ALSA: hda: Fix headset detection failure due to unstable sort
>     
>     commit 3b4309546b48fc167aa615a2d881a09c0a97971f upstream.
>     
>     The auto_parser assumed sort() was stable, but the kernel's sort() uses
>     heapsort, which has never been stable. After commit 0e02ca29a563
>     ("lib/sort: optimize heapsort with double-pop variation"), the order of
>     equal elements changed, causing the headset to fail to work.
>     
>     Fix the issue by recording the original order of elements before
>     sorting and using it as a tiebreaker for equal elements in the
>     comparison function.
>     
>     Fixes: b9030a005d58 ("ALSA: hda - Use standard sort function in hda_auto_parser.c")
>     Reported-by: Austrum <austrum.lab@gmail.com>
>     Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219158
>     Tested-by: Austrum <austrum.lab@gmail.com>
>     Cc: stable@vger.kernel.org
>     Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
>     Link: https://patch.msgid.link/20250128165415.643223-1-visitorckw@gmail.com
>     Signed-off-by: Takashi Iwai <tiwai@suse.de>
>     Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> 
>  sound/pci/hda/hda_auto_parser.c | 8 +++++++-
>  sound/pci/hda/hda_auto_parser.h | 1 +
>  2 files changed, 8 insertions(+), 1 deletion(-)
> 
> I'm attaching the output of alsa-info_alsa-info.sh script
> 
> Please let me know if I can provide more information.

Might you be able to try please the attached patch to see if it fixes
the issue?

Regards,
Salvatore

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Bug#1108069: [regression] Builtin recognized  microphone Asus X507UA does not record Salvatore Bonaccorso <carnil@debian.org> - 2025-06-25 20:50 +0200
  Bug#1108069: [regression] Builtin recognized microphone Asus X507UA does not record Igor Támara <igor.tamara@gmail.com> - 2025-06-26 03:00 +0200

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