PC into TV - sound feedback (frequency?)

[faxfan]

Hi All,

I'm putting a PC (Navida GPU, HDMI) into my TV and everything works in terms of resolution etc. But when I run a game or have a browser of predominantly one i.e. white. I get terrible feedback (sometime quite a lot sometimes very little buy always there) - it's like a frequency feedback noise, if that makes sense?

Full setup

PC (Nvidia Titan X - Series 9) -> Sony X93 HDMI port -> HDMI ARC -> Arcam AVR 550
OR
PC (Nvidia Titan X - Series 9) -> Arcam AVR 550

Tried -

-> Different cables / ports
-> Different frequencies 24,50,60 - the TV and PC appear to sync fine
-> Colour spaces RGB / YBr etc. - again TV and PC appear to sync fine

Any ideas?
(also posted in Home Cinema section)

 

[Davedree]

I think I know the sound you are talking about, My ancient Samsung/Goodmans 42 did the same with white light.
I run a vsx922 from my gtx1060 using hdmi to the tv. For me I initially thought it was transformer or powersupply noise from bad filtering capacitors, but after adjusting my backlight and contrast levels I found the noise was completely gone.
Does it white Buzz when you go directly from Titan to tv ?

 

[faxfan]

Same buzz directly to TV