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Old 11-28-2017, 01:59 PM   #1
archimandrite
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Registered: Nov 2017
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Question ALSA/PulseAudio headphone detection inverted in Arch


Hello all. I'm having a bizarre audio problem in Arch (unsure if that's relevant, hence why I'm posting in Laptop/Netbook) running PulseAudio. Put simply, when my headphones are disconnected, PA thinks they're connected. When I connect them, PA switches over to internal speakers, as if the headphones were disconnected.

Okay, some context: I'm running Arch with Plasma 5 on an HP ProBook 4530s .Alsamixer shows the card as HDA Intel PCH, and chip as IDT 92HD87B1/3. Audio packages I've installed are pulseaudio, pulseaudio-alsa, and plasma-pa.

Running amixer -c0 contents shows:

numid=19,iface=CARD,name='Front Headphone Jack'
; type=BOOLEAN,access=r-------,values=1
: values=off

when the headphones are connected, and:

numid=19,iface=CARD,name='Front Headphone Jack'
; type=BOOLEAN,access=r-------,values=1
: values=on

when they're disconnected.
Clearly this is the wrong way round, so I'm assuming the issue is at the alsa level, rather than with pulseaudio...

Searching around the forums, I've seen countless issues with Intel HDA, but never this specific issue.

Does anyone have any idea what could cause this, or how to fix it?

(EDIT: I'm pretty sure there's nothing wrong with the hardware; I've tried:
different headphones on this laptop = same problem;
same headphones on another laptop running Arch = works perfectly;
same headphones on this laptop but running Windows = works perfectly.)

Thanks in advance!
 
Old 11-30-2017, 02:32 AM   #2
ondoho
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this lead me to this.
more generally, i would try with different headphones first (4 rings or 3 rings?), and then maybe also without KDE.
 
  


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