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There doesn't seem to be a solution to this so I just re-installed Kubuntu and the sound works perfect. Downside: wiped everything else (but I didn't have much on my ssd so it was fine)


Please run the following commands: sudo apt-get install --reinstall linux-image-`uname -r` sudo modprobe snd-hda-intel rm -r ~/.config/pulse* pulseaudio -k source Also, to replace any previous configurations: sudo apt-get update mkdir PULSE cd PULSE apt-get download pulseaudio ar xvf * tar xvf dat* sudo rm /etc/pulse/* sudo mv etc/pulse/* /etc/pulse/


Did you set the sound over 100% ? In the sound parameters you can tick a box that allow to have a louder volume. I have the same computer and installed 16.04 yesterday and have no sound issues, it was actually really low before I have done this. But after ticking that box, the volume is loud enough.


Have you tried putting it back in another time? I would test another pair of headphones with your audio jack to check if the audio output is damaged. Another thing could be dust build-up in the output, you can use a Q-tip to try to remove dirt and see if that corrects anything.

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