I just installed Ubuntu 16.10 on my Dell Vostro 5568 laptop. Everything was working fine (good sound from the speakers). Then I plugged my headphones (Koss) in the headset connector.
The audio controller on the laptop is a Realtek ALC3246 with Waves MaxxAudio Pro. The external interface (connector number 6, in the above figure) is a microphone in/stereo headphones/external speakers connector.
Ubuntu then showed a popup dialog with a question about the type of the device I was trying to connect. I think there were 3 options. I could choose between microphone/headphones/headset. I chose headphones. And after that, there was good sound from my headphones for some hours. Then I unplugged the headphones. And sometimes later I tried replug the headphones, but then suddenly there was no sound from the headphones at all. Also, when I unplugged them there was no sound from the speakers either.
I tried to restart the machine, but it did not help. Everything is muted.
If I open System Settings->Sound
with the headphones unplugged, I get this screenshot:
When I try push the Test sound
button, there is no sound from either the front left, or the front right speaker.
Edit:
After googling for more advice, I decided to try reinstall alsa-base
and pulseaudio
sudo apt-get remove --purge alsa-base pulseaudio
sudo apt-get install alsa-base pulseaudio
However, after rebooting the audio icon had disappeared from the Unity system tray, and in addition I am no longer able to open System setting
from the system tray.
So now the situation is even worse than before since I cannot access any system settings at all ( including audio settings ).
Any advice?
lspci -nnk | grep -A2 Audio
,aplay -l
, andpactl list short sinks
? Please also make sure that the relevant audio channels inalsamixer
(terminal) orgnome-alsamixer
(GUI) have their volume turned up and aren’t muted. Thanks.