[Bug 269027] Re: No sound from Laptop speakers, but headphones. my solution

[Connor Carney]

mord's solution in #64 got the speakers working on my HP dv4-2100us, but
broke the headphones.

However, I got everything working by adding just this line to /etc/modprobe.d/alsa-base.conf:
options snd-hda-intel model=hp-m4

and unmuting everything in alsa-mixer

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No sound from Laptop speakers, but headphones. my solution
https://bugs.launchpad.net/bugs/269027
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