So, when I clicked the 'Test' button the first time, it blanked for a
longer time before coming back on, but after that, it flickered very
shortly.

Also, assuming that the problem is related to this feature, I think that
then it would blank out every time any alerts came in. However, it
blanks out only for the first time and then if I repeatedly cause that
sound to be played, then the flickering doesn't happen.

I think this has something to do with the sound drivers messing with my
display somewhere. I'm really not aware of how Ubuntu (or any Linux for
that matter) manages video and audio, and I hope to learn more, but I'm
a hundred per cent sure that if I cause any sound to be played, even
unpause a YouTube video after more than about a minute of silence, it
blanks out for me. That's definitely not something that triggers a
visual alert right?

Please help me, I just want a seamless and perfect Linux experience for
myself and anyone else using Linux on an HP Pavilion laptop. I intended
to move away from Windows as soon as possible, but I've been unable to
do so on this new laptop ever since I've bought it (18.04 didn't install
properly, 19.10 had battery and graphics issues (Intel graphics wasn't
detected), and now 20.04 development version is causing display problems
again...)

** Attachment added: "Flicker-Bug.mp4"
   
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1869549/+attachment/5344736/+files/Flicker-Bug.mp4

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https://bugs.launchpad.net/bugs/1869549

Title:
  [nvidia] Whenever a sound needs to be played the screen blanks out

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