Ventura 13.0.1 update results in USB-C monitor no longer being detected

Using:

2 external monitors will not take a signal for more than a few seconds before going black. I have been falling behind in my work due to this massive inconvenience and not sure what trick to try next. I have tried:

• New HDMI to USB-C cords
• Bought one new monitor as I thought that was the problem after trying all the tricks listed here and other forums online
• Bought new adapters
• New power bar
• Tried leaving them plugged in while powering down power bar...nothing will let them stay on longer than a few seconds

I am at a total loss here and REALLY hoping someone an help me out.......

Sounds almost ridiculous, but perhaps worth a try! Even though USB-C can be plugged in either right-side-up or upside-down, you can try flipping the usb-c plug. In my case, I was using a usb-c extension cable from my usb-c hub to my 2018 Macbook Air (also, I do not have the "Allow accessories to connect" option at all). I flipped the female USB-C plug and now my usb-C hub works again!

This is where I found the solution that worked for me. I can confirm and vouch that the following worked for me. Wired usb keyboard and mouse stopped work… - Apple Community

On my iMac, Retina 5K, 27-inch, 2019 I solved the issue doing the following:

1. Deleting the file com.apple.windowserver.[...].plist in ~/Library/Preferences/ByHost
2. Shutting down the iMac
3. Unplugging all (!) cables from my Apple LED Cinema Display
4. Unplugging all (!) cables from my iMac and waiting 15+ Seconds (that does an → SMC reset, btw.)
5. Replug everything: display power, DP-connection to iMac, USB-connection to iMac, iMac power
6. Perform a → NVRAM reset as explained here: https://iboysoft.com/wiki/nvram.html
7. Boot macOS Ventura 13.1 (22C65)

And voila - everything works again! 😍

For all here strugling with same issue. I tried all software solutions adviced here and on other forums. I also tried to switch dongles, etc. Nothing worked for 2 weeks.

Then i remembered i also use HDMI switch (low cost) - even if i have enabled untrusted accessories in settings - it is not working due to it for some reason.

After disconnecting and connecting my usb-c hub directly via HDMI to monitor it works like a charm.

Hope this will be fixed soon. Since I need to switch HDMI input from linux to mac time to time.

The quick way to tell is to examine the lead-in cord.

The ThunderBolt display (that Will work with ThunderBolt-3 <-> ThunderBolt-2 adapter) has only MagSafe and ThunderBolt inputs.

The Cinema Display (that will NOT work with ThunderBolt-3 <-> ThunderBolt-2 adapter, but WILL work with Mini DisplayPort adapter) has MagSafe, Mini DisplayPort AND USB input.

I just updated a 2018 Mac Mini to 13.0.1 today. Afterward I could not get an OEM Apple USB-C Digital AV Multiport Adapter to work. I have an HDMI display and a USB-A device connected to the dongle and neither one are being recognized by the OS. I moved it to all of the different USB-C ports on the back of the mini, rebooted countless times, and still can't get it to recognize.

Interestingly enough, there is not a ~/Library/Preferences/ByHost/com.apple.windowserver.display.{XXX}.plist file to remove on this machine.

Same. here. As soon as I updated to Ventura 13.0.1 I lost access to my external monitor. I have a new 2022 MacBook 14 inch M1 Pro. I really do not want to have to downgrade the OS like i had to do last time they screwed up DJ software Rekordbox's ability to export songs to USB drives. I have looked on display links website and it seems everyone is having this issue. Honestly crazy to see you're using the stock usb-C / HDMI for 2 and still having this issue though. That's insane. I have 3 monitors with a display link adapter and the third is the one that won't recognize.

If this is apple hard-locking us out, they better get ready for a lot of pushback. If not, I can't even begin to understand how they screw up 3rd party apps with small updates like a 0.0.1.

Having the same issues on my MacBook Pro 2019 after updating to Ventura 13.0.1.

I tried to remove ~/Library/Preferences/ByHost/com.apple.windowserver.display.{XXX}.plist and restart, but this does not work.

For me, I was using the "WAVLINK USB 3.0 to HDMI Universal Video Graphics Adapter with Audio Port Displaylink Chip Supports up to 6 Monitor displays up to 2048x1152, Support Windows,MacOS 10.14 Later, Ubuntu 20.04,22.04" and confirmed it was the adapter that died. I got a replacement unit and it works fine with Ventura 13.0.1. Not sure what adapter you're using, but this one has allowed me to use 3 displays with a 2022 MacBook M1 Pro 14"

https://smile.amazon.com/dp/B01CSG7TUC?psc=1&ref=ppx_yo2ov_dt_b_product_details

Seeing the same type of issue, but mine is on a Mac Studio. Everything was great, now on 13.0.1, monitor connected from DisplayPort to USB-C now goes black after a short time. Monitor, DIsplayPort port on monitor, and cable all verified good on other machines. Sometimes the screen comes back for a bit with a full shutdown and cold start. All four USB-C ports show the same behavior. Haven't tried the file-removal thing yet.

That's insane you're having a monitor issue on a Mac Studio when Apple says it can support up to 5 displays out of the box. I would reach out to Apple because a Mac Studio definitely shouldn't be having this problem.

The laptop always works with the external monitor lg-27up850-w from the mains via usb-c. Optimised charging is switched on and it works (the socket icon appears). But after updating - ventura. Optimised charging has started to appear very rarely. Moreover, it can work for a day, and then disappears after the laptop is unplugged for a moment or the monitor is switched off/on. Then it continues to charge to 100% again.

On monterey os everything worked consistently for weeks, even if I unplugged the laptop overnight and plugged it in in the morning, the optimised charge would appear immediately.

Is there a difference working via hdmi? Maybe put HDMI + plug in a magSafe MacBook charger.

Same issue here. The monitor was connected via USB-C to an LG Ergo monitor just fine on Ventura 13.0.0, but the 13.0.1 update broke it for me. Removing the windowserver file mentioned in the thread makes no difference.