The above change is in upstream:
https://lore.kernel.org/alsa-
devel/20211104155726.2090997-1-pe...@perex.cz/
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Title:
[Acer Spin
The model should be detected automatically. The parameter is just for
override useful for tests.
If you can, could you test this code change?
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 6322fac9e694..4f46cfc5393b 100644
--- a/sound/pci/hda/patch_realtek.
And you didn't follow my instructions - read them carefully. There is
another module and parameters for the SOF driver to set the HDA model.
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Please, attach new alsa-info.sh output.
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Title:
[Acer Spin 5 - SP513-54N] External headset microphone not working on
Ubuntu 21.04
snd_sof_intel_hda_common.hda_model=alc255-acer not
snd_hda_intel.model=alc255-acer
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Title:
[Acer Spin 5 - SP513-54N] External heads
Try 'snd_sof_intel_hda_common.hda_model=alc255-acer' kernel parameter
and don't modify snd_intel_dspcfg configuration.
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Title:
[Acer
The qemu information (link) is in the commit I mentioned in comment#23 :
https://github.com/ryanprescott/realtek-verb-tools/wiki/How-to-sniff-
verbs-from-a-Windows-sound-driver
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Adding Lenovo contacts to Cc...
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Title:
Microphone not detected Lenovo Yoga S940
Status in Linux:
Confirmed
Status in alsa-driver
In other words: We don't have enough information to support this hw
(speakers). If vendor is not willing to add support to BIOS or give us
necessary information to add the proper initialization for the I2C
amplifiers to the driver, the only way is the reverse engineering (grab
the initialization HD
Example "black magic" initialization of speakers for Lenovo Ideapad
S740:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=26928ca1f06aab4361eb5adbe7ef3b5c82f13cf2
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It seems that there are some I2S amplifiers on the path to speakers and
the BIOS has only limited initialization. I will try to gather
information for C930 from Lenovo, too.
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(In reply to Pierre Bossart from comment #17)
> Indeed the distros don't seem to have a proper communication channel
> with driver developers to make sure the options make sense.
It's not easy to have multiple drivers for the same hardware. This bug
is just an example what we are trying to resol
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