In Ubuntu 18.04, when connected via hdmi, there is no sound on tv. How to activate?

Question

linux

I connect my TV to my laptop via hdmi. The image is transmitted to TV, there is no sound - only in the laptop speakers.
In the settings, only embedded audio and HDMI output is not displayed.


I read some instructions on the Internet, installed pulseaudio, but there all hdmi are marked as unplugged


. Whatever I tried, it did not work. Please help me with the problem.