Catalina update not recognising monitor
I am using a USB-C to HDMI cable to connect Mac Pro to external monitor. Never had a problem connecting to external monitor before but now no signal is detected and not showing any external display in the display settings.
I have already reset NVRAM, checked cables, adjusted settings etc with no fix. It has come on a couple times after leaving the cable connected for 15-20 mins but not always guaranteed? Any solutions?
MacBook Pro 13", macOS 10.15