USB Type-C to HDMI/DP doesn't seem to work

[lazd]

I haven't been able to get this to work since Big Sur, it stopped working in Monterey.

I use a Cable Matters USB C Multiport Adapter since I need to use DisplayPort to get full refresh rate on my 24" Dell retina monitor. I'll give some basic Type-C to HDMI adapters at try to verify the adapter isn't a problem, but I do recall this adapter working in Big Sur.

Has anyone tested this recently on Sonoma?

[jlempen]

I recall that my Apple USB-C to HDMI adapter used to work on Big Sur as well. I'm afraid I don't have the hardware anymore and won't be able to test this, sorry.

[lazd]

No worries, I have 4-5 different adapters here, I'll test and report back.

[AlexandreC31]

Doesn't work for me either.
I use a HP Thunderbolt Dock

[livexia]

I also have this problem, don't work on my two usbc hubs. And I found the hub usb sometimes using usb2.0 instead if usb3.0.