No microphone input or line

[MrEen]

A few people have had success with the 5.10 kernel, but I don't believe that is available to your through the Update Manager. I just don't understand why ALSA doesn't see any inputs at all.

At the moment there's only thing one thing I can think of to try that we haven't tried already:

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sudo tee /etc/modprobe.d/blacklist-realtek.conf <<<'blacklist snd_hda_codec_realtek'

Run that then shut down for a few minutes. Rebooting is not enough for many people, but shutting down seems to make it stick. After that, boot up and see if any inputs show up. The output of dmesg | grep snd will be enough to know. It should have a few lines added to this that show the inputs:

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[    5.445148] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC256: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[    5.445151] snd_hda_codec_realtek hdaudioC0D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[    5.445153] snd_hda_codec_realtek hdaudioC0D0:    hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[    5.445154] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0
[    5.445155] snd_hda_codec_realtek hdaudioC0D0:    inputs:

The snd_hda_codec_realtek will have realtek replaced by generic from doing this. It is possible this will wreak your output again. If that happens, it can be undone with this and a reboot:

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sudo rm /etc/modprobe.d/blacklist-realtek.conf

[F_bb]

At the moment there's only thing one thing I can think of to try that we haven't tried already:

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sudo tee /etc/modprobe.d/blacklist-realtek.conf <<<'blacklist snd_hda_codec_realtek'

Run that then shut down for a few minutes. Rebooting is not enough for many people, but shutting down seems to make it stick. After that, boot up and see if any inputs show up. The output of dmesg | grep snd will be enough to know. It should have a few lines added to this that show the inputs:

I'm not sure it changed anything, Now i Get this : https://termbin.com/393s

Sound out : OK
Sound IN : none

[MrEen]

Yeah, it didn't help at all.

You should go ahead and undo it.

Is Windows 10 also on this computer? If so, make sure Fast Startup is off, and also test the input in Windows. Then shut down from Windows and try booting Mint. If still the same, boot back to Windows, then reboot into Mint.

[F_bb]

Yeah, it didn't help at all.

I'm affraid so....

You should go ahead and undo it.

Not sure how to undo that! ??

Is Windows 10 also on this computer? If so, make sure Fast Startup is off, and also test the input in Windows. Then shut down from Windows and try booting Mint. If still the same, boot back to Windows, then reboot into Mint.

Yeah, under windows, mic works. I'll check if the fast startup is off as soon as I can later on today.

[MrEen]

Undoing it is posted above. Just run this then reboot:

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sudo rm /etc/modprobe.d/blacklist-realtek.conf

If Fast Startup was on, maybe we'll get lucky by turning it off. Keeping my fingers crossed.

[F_bb]

Undoing it is posted above. Just run this then reboot:

Yeah sorry, i wasn't enough focussed on that one... Thanks. I have applied this command eventually, then booted to windows.

So, Fast StartUp was on. I turned it off, I shut down windows, booted to Mint. No luck. Shut down, booted to windows back. Shut Down, booted to Mint. Still unlucky.

I ran

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sudo tee /etc/modprobe.d/blacklist-realtek.conf <<<'blacklist snd_hda_codec_realtek'

Shut down, waited few minutes, Booted to Mint. No luck. Sound is still on though, but no mic. This PC is a pain!!
I checked the mic under win from time to time, it never stopped working there. I don't want to go back there...!!!!

[MrEen]

This might be the last shot I can think of. Run these then see if an input shows up:

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echo auto | sudo tee /sys/devices/pci0000:00/0000:00:1f.3/power/control
echo 1 | sudo tee /sys/devices/pci0000:00/0000:00:1f.3/remove
echo 1 | sudo tee /sys/bus/pci/rescan

You're not rebooting after running these. After the rescan, I'm hoping the card will get populated properly. Again, dmesg | grep snd is a good check for this.

[F_bb]

Thanks again MrEen for your time and help.

You're not rebooting after running these. After the rescan, I'm hoping the card will get populated properly. Again, dmesg | grep snd is a good check for this.

From what I could read the result isn't good : https://termbin.com/nrar Tell me if I'm wrong... Anyway, the mic still doesn't work.

[MrEen]

Indeed, it didn't help!

The output shows me you ran it just under 12 minutes after booting up, but still got the same config of the sound card.

I just can't fathom what could possibly be causing this. Right now I'm out of ideas I'm afraid. I'm going to be a bit swamped for the next week and a bit. The following weekend I should have some time to research this some more, but I need you to send me a reminder a week from Friday so I don't lose track.

The other option is raising a bug report with Ubuntu. I would think this is a kernel issue as most ALSA stuff is in the kernel, and it's ALSA that isn't seeing any inputs.