I was using my TV as a monitor connected to my lenovo laptop, through a HDMI connection, manually changing the sound sink in system options. Then I shutdown the system and then unplugged the HDMI, when for the next time I started Ubuntu, the sound dissapeared. The sound is not present only on my user profile (on the Guest is everything ok). I belive that the system somehow 'forgot' to reset to the internal speakers of my laptop. I've tried solutions with writing a /etc/defaults/sound.conf, or using alsamixer or even re-installing the alsa-base pulseaudio. Nothing helped. Does anyone have a clue?
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Welcome to Ask Ubuntu! ;-) Could you please try to connect the TV again, System settings - sound, set it to internal speakers, disconnect TV. Please let us know if this helps... – Fabby Feb 22 '15 at 20:08
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That was not the whole problem as I see now. You see, after the re-installation of the alsa drivers, there was no 'sound indicator' in the system tray. I tried to access system options but... there were only some of them, like here. I needed to re-install the unity-control-center and that did the trick. Finally,
Welcome to Ask Ubuntu! ;-) Could you please try to connect the TV again, System settings - sound, set it to internal speakers, disconnect TV. Please let us know if this helps... – Fabby
Yeah, that was the final part, which did the trick. My sound is up and running again - Thanks for help :) I hope this will be a good solution for others, who encounter such obstacles.
