Solved Noise from jack plug

[mro]

When I connect an earbud-mic headset to my ThinkPad x250 via the jack plug, I hear a lot of noise.

I vaguely remember that someone here in the forum talked about suh acse and output being connected to input, but I can't find the post anymore. I had other pressing issues at the time, but now feel brave enough for audio

What settings should I check for this?

P.S.: I have seen https://forums.freebsd.org/threads/setup-laptop-jack-for-speakers-microphone.80021/ and https://docs.freebsd.org/en/books/handbook/multimedia/#automatically-switching-headphones but don't get a grip what to try and look at.

 

[mro]

meanwhile I came across https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222636#c8 by vermaden but still feel like stabbing in the dark.

 

[vermaden]

I felt the same when I was 'playing' with these various sound settings.

 

[mro]

After reading https://forums.freebsd.org/threads/...nes-freebsd-14-0-release-p6.93564/post-656877 I added

$ tail -5 /etc/sysctl.conf
# https://forums.FreeBSD.org/threads/no-sound-trough-headphones-freebsd-14-0-release-p6.93564/post-656887
dev.hdaa.0.pindump=1
dev.hdac.0.pindump=1
dev.hdaa.1.pindump=1
dev.hdac.1.pindump=1

and got in $ dmesg -a

sysctl: unknown oid 'dev.hdaa.0.pindump' at line 45
hdaa0: Dumping AFG pins:
hdaa0: nid   0x    as seq device       conn  jack    loc        color   misc
hdaa0:  3 18560010 1  0  Digital-out   Jack  Digital 0x18       Unknown 0
hdaa0:     Caps:    OUT              Sense: 0x00000000 (disconnected)
hdaa0: NumGPIO=0 NumGPO=0 NumGPI=0 GPIWake=0 GPIUnsol=0
sysctl: unknown oid 'dev.hdaa.1.pindump' at line 47
hdaa1: Dumping AFG pins:
hdaa1: nid   0x    as seq device       conn  jack    loc        color   misc
hdaa1: 18 90a60130 3  0  Mic           Fixed Digital Internal   Unknown 1
hdaa1:     Caps: IN                 
hdaa1: 19 40000000 0  0  Line-out      None  Unknown 0x00       Unknown 0 DISA
hdaa1:     Caps: IN                 
hdaa1: 20 90170110 1  0  Speaker       Fixed Analog  Internal   Unknown 1
hdaa1:     Caps:    OUT    EAPD     
hdaa1: 21 0421101f 1  15 Headphones    Jack  1/8     Right      Black   0
hdaa1:     Caps:    OUT HP EAPD      Sense: 0x00000000 (disconnected)
hdaa1: 22 411111f0 15 0  Speaker       None  1/8     Rear       Black   1 DISA
hdaa1:     Caps:    OUT HP EAPD      Sense: 0x00000000 (disconnected)
hdaa1: 24 411111f0 15 0  Speaker       None  1/8     Rear       Black   1 DISA
hdaa1:     Caps: IN OUT         VREF Sense: 0x00000000 (disconnected)
hdaa1: 25 411111f0 15 0  Speaker       None  1/8     Rear       Black   1 DISA
hdaa1:     Caps: IN                  Sense: 0x00000000 (disconnected)
hdaa1: 26 04a11020 2  0  Mic           Jack  1/8     Right      Black   0
hdaa1:     Caps: IN             VREF Sense: 0x00000000 (disconnected)
hdaa1: 27 411111f0 15 0  Speaker       None  1/8     Rear       Black   1 DISA
hdaa1:     Caps: IN OUT         VREF Sense: 0x00000000 (disconnected)
hdaa1: 30 411111f0 15 0  Speaker       None  1/8     Rear       Black   1 DISA
hdaa1:     Caps:    OUT              Sense: 0x00000000 (disconnected)
hdaa1: NumGPIO=5 NumGPO=0 NumGPI=0 GPIWake=0 GPIUnsol=1
hdaa1:  GPIO0: disabled
hdaa1:  GPIO1: disabled
hdaa1:  GPIO2: disabled
hdaa1:  GPIO3: disabled
hdaa1:  GPIO4: disabled

 

[Andriy]

Try to mute "mix" and "igain" controls.

 

[mro]

muting mix really made the difference. The noise from the headphone is gone! Recording noise remains a bit but is bearable.