I have just installed ubuntu on my intel nuc. I am trying to fix the fact I have no sound over hdmi. I found the supposed fix in the following instructions:
**No audio through HDMI (many flavors of Ubuntu): This isn't specific to the NUC as it seems to be happening on lots of builds, but it's easy to get around: Make sure your system is up to date using the Update Manager Add the following groups to your account: audio, pulse, pulse-access, video, voice In a terminal window run the following:
sudo add-apt-repository ppa:ubuntu-audio-dev/alsa-daily apt update apt install oem-audio-hda-daily-dkms
Reboot the system**
The problem is when I get as far as running "apt update" terminal doesnt recongnise the command. Has anyone any idea where I am going wrong?