You are right, I was using headphones that had a microphone and the jacks on the card do not handle the Tip, Ring, Ring, Sleeve (TRRS) connector.
On Wed, Oct 24, 2018 at 2:11 PM Clemens Ladisch via Alsa-user < alsa-user@lists.sourceforge.net> wrote: > Chad Skeeters wrote: > > It plays "Front Left", "Front Right" out of *both* speakers of headphones > > connected to the green headphone port on the back of the card. Then it > > plays "Rear Left", "Rear Right" out of both speakers of headphones > > connected to the black surround port on the back of the card. > > The channels are entirely separated in the hardware. > > This is likely to be a problem with the connector (not plugged in all the > way?) or with the headphones. > > > Regards, > Clemens > > > _______________________________________________ > Alsa-user mailing list > Alsa-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/alsa-user >
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