I can’t seem to get HDMI 2.0 to work with nvidia 565.77 drivers after update. Display port still works, but with hdmi 2.0 immediately after splash the system goes dark and monitor gets no output.
The HDMI cable and monitor is working fine because windows works perfectly normally. The only particular problem is with HDMI 2.0 on linux with the latest nvidia drivers.
Is this a known issue?
My system configuration:
MSI B550, Ryzen 3700x, RTX 3060TI limited hash rate.
For those who are having the same issue, the issue seems to be resolved because of hdmi_deepcolor parameter for the nvidia drivers. What I believe the issue to be is that my monitor does not support this, so having this turned on causes my monitor to not be able to get any output.
To fix, add into your /etc/default/grub in the default line (where you add your kernel parameters),“nvidia-modeset.hdmi_deepcolor=0”
This seems to have fixed it for me. I’m not sure if this is a bug or an expected feature.
HDMI 10 bits per component support is enabled by default in NVIDIA drivers. Using the above parameter disables it.
Right. Should enabling this parameter break support for monitors that doesn’t support 10 bit? That’s the actual question. I don’t know if this behavior is intended.
I honestly wouldn’t think so but can’t say. I just know it was implemented in the 555.xx driver version.
Edit: I have the latest drivers on my GTX 1060 with and Samsung 24" HD monitor and i have no issues. It has game mode which I’m not sure what it does exactly? When enabled the monitor brightens right up. I don’t think my monitor supports 10 bit (HDR)?
Edit: I’m also not sure if my HDMI cable is 2.0 either. I doubt that it is as it came with the monitor and is 5+ years old.