Comment by the author of the bug report:
Taking cue from Raymond's comments I managed to get sound from the
Realtek circuits. I used "sudo hdajackretask" to change the pins'
assignments. The whole procedure is easy though a bit elaborate, but I
do not know how to write a permanent programmatic
Comment by the author of the bug report:
Plugging or unplugging the headphone does not change anything in the
output of command hdajacksensetest -a. Neither there is any sound on the
headphone nor on the built-in loudspeaker.
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Comment by the author of the bug report:
Built-in speaker never had problems with ubuntu 14.04.
Anyway, here is xenial's output for hdajacksensetest -a
pablo@pablo-VGN-FS315B:~$ sudo hdajacksensetest -a
Pin 0x0f (Black Headphone, Rear side): present = No
Pin 0x10 ( Line Out): present = No
Pin
Comment by the author of the bug report:
Today, 6/4/16. Upon ubuntu's notice of Linux Kernel 4.4.0-17
availability, I proceeded immediately to upgrade xenial. On restarting
the computer the built-in sound device went anew mute. I do not know
enough about the workings of alsa to give good
Comment by the author of the bug report:
Today, 4/4/16. Sound came alive all of a sudden while playing a short
film on browser. I heard a a crackle from the built-in loudspeaker and
sound started normal. Let's hope it doesn't go silent again!
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Public bug reported:
Release Ubuntu 16.04
Bug (probably) in Alsa package - unity-control-center
15.04.0+16.04.20160315-0ubuntu1
I expected to hear sound from the built-in sound device.
But there was no sound at all.
This bug is a sort of regression. The problem was happening before; some
days
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