This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
hirsute' to 'verification-done-hirsute'. If the problem still exists,
change the tag
** Tags removed: verification-needed-bionic verification-needed-focal
** Tags added: verification-done-bionic verification-done-focal
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https://bugs.launchpad.net/bugs/1925057
Title:
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
focal' to 'verification-done-focal'. If the problem still exists, change
the tag
Sent the fix to upstream: https://mailman.alsa-project.org/pipermail
/alsa-devel/2021-May/184310.html
the patch is cced to stable kernel, so all ubuntu kernel will merge this
patch once this patch is merged to stable kernel.
So close this bug.
** Changed in: linux (Ubuntu)
Status:
** Package changed: alsa-driver (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
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https://bugs.launchpad.net/bugs/1925057
Title:
[82A1, Realtek
Please install this testing kernel and test it. thx.
https://people.canonical.com/~hwang4/lp1925057/
Download all deb, sudo apt install *.deb
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OK, thanks, let me ask for help from realtek side to explain the #9.
thx.
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Title:
[82A1, Realtek ALC287, Speaker, Internal] Underruns, dropouts
> So if only run below commands, does the audio become good or not?
Yes, I confirm that the following lines are enough to make audio good:
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x08
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x4ab7
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So if only run below commands, does the audio become good or not?
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x08
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x4ab7
Or could you do a test to find the minimal group of commands to make the audio
change normal?
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Please, see below testing results.
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x78
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x003e
// bad
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x77
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x0015
// bad
sudo hda-verb
When problem happens, please run each group of SET_COEF_INDEX and
SET_PROC_COEF, then test if the audio changes normal or not:
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x78
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x003e
// test if audio changes normal or not
sudo hda-verb
** Attachment added: "alsa-info-good.txt.yy9imLvHvj"
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1925057/+attachment/5490137/+files/alsa-info-good.txt.yy9imLvHvj
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** Attachment added: "alsa-info-bad.txt.k4EOeiWnvC"
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1925057/+attachment/5490136/+files/alsa-info-bad.txt.k4EOeiWnvC
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Please find the requested output attached.
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Title:
[82A1, Realtek ALC287, Speaker, Internal] Underruns, dropouts or
crackling sound
To manage
when problems happens, please run:
$sudo sh -c 'echo 1 > /sys/module/snd_hda_codec/parameters/dump_coef'
Then run alsa-info to collect an alsa-info.txt (bad)
Then poweroff the machine and poweron it, make sure the audio works normally,
run:
$sudo sh -c 'echo 1 >
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