Post the update to Ventura my system no longer seems to detect my TV which i have connected via HDMI to type C coverter. Please tell what to do and when this bug will be taken care of

Check Apple menu -> System Settings -> Displays. Verify the display shows up there. If it doesn't, make sure that the HDMI input on the TV matches the number on the HDMI port of the TV, and try again. Use detect displays.

If it doesn't work, you may need to reboot the Mac.

If it still doesn't work, try adding the Display menubar icon from the System Settings and see if the display shows there. If it doesn't, it could be your adapter for HDMI needs more power. Many such adapters need the power of the notebook computer to be plugged into the adapter, and then the adapter in the notebook.

You may want to bring your Mac, and the adapter into an authorized service center where they can verify if the adapter is itself faulty or underpowered.

Maybe it’s not your case, but many adapters/docks require third party software “DisplayLink”. In several threads here, users have reported that updating or reinstalling DisplayLink restored functionality.

You don't need to erase.

What you can do is create a separate partition if you have enough space and use internet restore to install the older OS. Or you could connect an external hard drive and install the older operating system on that.

I am going through the same issue.

After upgrading my TV is not detected, I tested different cable, HDMI + Apple Converter, HDMI to USB C.

Cables work fine on other external screens. the TV is new.

I have followed all the tips from Apple support, reset the NVRAM.

Nothing works.

I spent a couple of hours yesterday with a technician from Apple Support trying to fix this issue without any success.

The only solution I have is to downgrade to Monterey, but that's another headache. I tried all the recommendations from Apple to use MacOS recovery, none of them worked!

Last hope is to restore from Time Machine last backup on Monterey, but I'll loose all the data created after the upgrade :)

I could also change my external screen, multiple display is actually working with other monitors I have, or eventually stop buying Apple products that get obsolete after 3 years nowadays.

There is definetely a bug when upgrading and Apple should do something about it

DisplayLink download is here.

If you are worried about losing data on downgrading, here's an article on solving that:

How do I downgrade my Mac OS X operating … - Apple Community

The only data you risk losing is custom album grouping, and playlists if you have upgraded your photo and music libraries. The photos and music will not get lost.

I have no issues in M1 and M2 MBA computers running Ventura 13.4 and connecting to Samsung TV via Direct HDMI connection

Using the Apple USB-C Digital AV Multiport Adapter