[470.57.02] Nvidia 30-series HDMI audio stops working when switching from 60Hz to 120Hz

Two months I’ve been struggling with audio issues and yesterday after a few clean installs (PopOs 21.04 and 21.10) thought I’d try dropping the refresh rate to 60Hz. What do you know? Everything works… I thought that this can’t be just the drivers, because so many of the HDMI 2.1 cables claim to be “8K” and “120Hz” and whatnot compatible, so I bought a 2 meter cable with a proper HDMI certification to make sure the connection between the display and the computer is not the issue. Problem solved? No, sound is still as broken…

So, the only way I can use my system is either dropping the refresh rate down to 60Hz or by falling back to the latest driver in the os repo that works (460.106).

If only I’d discovered this thread earlier… Would have saved a lot of time.

Used hardware, 3080 and LG C1. No issues whatsoever with 2080Ti + DP->HDMI2.1 converter and a Q95T Samsung, running 4k@120 just fine.

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