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I have this problem too with Ubuntu Gnome 16.04 on Dell XPS 15 9550.

All was working fine, then one day it goes silent when plugging in my speakers to the headphone socket.

Looking at pavucontrol and/or "Sound settings" under Gnome it shows that the sound should be playing on the Headphones output port - the VU meter is bouncing up and down ok, but it's silent. Pull out the wire (or select internal speakers for the Output) and the sound switches to the internal speakers OK.

Last time this happened I fiddled for ages and then got distorted sound (sounds like some sort of cross-channel thing) and this only went a away with a complete re-install (which I did to try to fix a separate bug).

I ran alsa-info.sh from the command line and uploaded the info. Here's the URL it gave me to share: http://www.alsa-project.org/db/?f=06...3f7ebb379442a7

It's now happened again, having spent all Friday enjoying music, Monday morning turn on and silence! I've not done any upgrades since.

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  • same here.. all of a sudden..
    – vasilakisfil
    Jan 18, 2017 at 22:49
  • Same here with Ubuntu 17.10. This will be the 3rd time I reinstall the OS within 6 months due to instability creeping up with the system over time.
    – Fiver
    Mar 12, 2018 at 20:58
  • I've not had this problem for a long time now. Occasionally I have to unplug and replug but I've not lost sound completely.
    – artfulrobot
    Mar 15, 2018 at 14:11

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