No sound over HDMI with Nvidia driver

Hi!

I have the following problem: I have no sound over HDMI when connecting a TV to my Nvidia card when using the TV’s native resolution 1920x1080.
When using another resolution 1400x1050 the sound is played well. Under 1360x768 there is no sound again. Under 1280x1024 the sound works.

It seems that previously before some updates the sound worked also with 1920x1080 sometimes, so it was taking up to 1-2 hours of repeated attempts to set up the sound but now it does not work at all.

Under Windows all works well. What should I do?