Wolfgang Fieg wrote:
HP X 2 Notebook - WIN 10 Home

Das Gerät hat eine kombinierte Kopfhörer-Micro-Buchse. Die kann man z.
B. bei einer Telfonkonferenz als Micro-Buchse verwenden. Nur: Sobald
dort ein Klinkenbstecker eingesteckt ist, schaltet der Lautsprecher ab.
Das ist ganz arg shlecht, weil man dann die anderen TN nicht mehr hören
kann. Was kann man tun, damit die Geräte-Lautsprecher trotz belegter
Klinken-Buchse einegschaltet bleiben?

Danke für die Hilfe.

Wolfgang

Here is an example of simultaneous output.

https://www.intowindows.com/use-spea...in-windows-10/

By setting Speakers as Default device, plugging in headphones with microphone,
setting the Record tab to listen to the microphone, you can set something there
so that the headphones get the same signal as the speakers.

As for the jack itself, it's possible it is a 4 contact jack. A TRRS plug fits
into that. Tip-Ring-Ring-Sleeve. I do not have the pinout. It would be
similar to

S Ground
R Right-Headphone
R Left-Headphone
T Monophonic-microphone

The documentation also suggests "audio jack does not work with microphone-only devices".

Note that the pinout of the jack, is non-standard, as it's a four contact jack.
The reason a plain microphone will not work, is the microphone signal
needs to be on Tip. Yet, most microphones use a TRS, not a TRRS. To
make a microphone-only work, you need to wire up an adapter (TRS to TRRS).

Jack Headphone Headphone+Mic Mic-Only Mic-Only (Obscure) StereoMic

Ground Ground Ground Ground Ground Ground
Right Right Right Bias RightMic+Bias
Left Left Left Mic-In LeftMic+Bias
Mic Mic+Bias Mic+Bias

(TRRS) TRS TRRS TRS TRRS TRS
(works) (works) (no!) (unheard of (should work HDaudio,
wiring) but does not work)

Since you seem to have Headphone+Mic with TRRS, my guess is you will
need no horrible hardware experiments, and visiting the sound dialog
in Windows 10 will be sufficient to resolve the problem. The above
is a "guess" as to how the hardware works. I'm using the circumstantial
evidence provided, to make this guess. Only a circuit schematic could
verify this.

Paul