You might try the various model option for the intel sound driver for
your codec. From the alsa documentation:
ALC861VD/660VD
3stack 3-jack
3stack-dig 3-jack with SPDIF OUT
6stack-dig 6-jack with SPDIF OUT
3stack-660 3-jack (for ALC660VD)
3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
lenovo Lenovo 3000 C200
dallas Dallas laptops
hp HP TX1000
auto auto-config reading BIOS (default)
You can try these as a model=3stack etc in /etc/modprobe.d/alsa-base,
adding a line like this:
options snd-hda-intel model=3stack
--
Headphones and laptop speakers work simultaneously
https://bugs.launchpad.net/bugs/297864
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