I tried the image of 17.10 (checked its sha256sum after download, it matched) and tested the 17.10 live USB using "test disc for defects" and no errors found.
I connected the HDMI cable to the TV, but I still had to manually switch the sound from the laptop speakers to the HDMI output.
This bug appears NOT to be fixed.
Thanks again for your time and your help, it's genuinely appreciated. :)
I tried the image of 17.10 (checked its sha256sum after download, it matched) and tested the 17.10 live USB using "test disc for defects" and no errors found.
I connected the HDMI cable to the TV, but I still had to manually switch the sound from the laptop speakers to the HDMI output.
This bug appears NOT to be fixed.
Thanks again for your time and your help, it's genuinely appreciated. :)
I am happy to try other suggestions.