Thanks for the bug report.
This appears to be either a hardware problem or a bug in the Nvidia
driver. I think most likely it's due to insufficient HDMI cable
bandwidth. Please ensure you are using an HDMI 2.1 certified cable
capable of at least 40 Gbit/s. An HDMI 2.0 cable will not be good
enough.
** Summary changed:
- refresh rate at 4k 144hz cant be set
+ HDMI refresh rate at 4k 144hz cant be set
** Summary changed:
- HDMI refresh rate at 4k 144hz cant be set
+ HDMI refresh rate at 4K 144Hz can't be set
** Package changed: xorg (Ubuntu) => nvidia-graphics-drivers-515
(Ubuntu)
** Changed in: nvidia-graphics-drivers-515 (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1990170
Title:
HDMI refresh rate at 4K 144Hz can't be set
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