My MacBook 2018 used to connect via HDMI to my Panasonic smart TV with no issues. Since updating to Ventura, and now Ventura 13.1, it no longer recognises the TV at all.
I can easily connect to a non Panasonic TV and a digital projector but the problem persists with Panasonic.
Is there a bug fix or a work around someone has discovered?
MacBook Pro 13″, macOS 13.1
This is a serious bug of macOS 13 Ventura, as explained here:
macOS 13 Ventura BREAKS Panasonic TV connection via HDMI
macOS 13 Ventura BREAKS Panasonic TV conn… - Apple Community
Hopefully, Apple will fix it in Ventura because some Macs cannot be further upgraded to newer macOS versions.
The Mac uses a system that reminds me of “Plug and play” to determine what display is connected, and what its capabilities are.
To get a Mac display to become active, you need the Mac to query the display, and the display to answer with its name and capabilities. Otherwise, the display will not be shown as present, and no data will be sent to the display. "No signal detected" is generated by the DISPLAY, not by the Mac.
This query is only sent at certain times:
• at startup
• at wake from sleep — so momentarily sleeping and waking your Mac may work
• at insertion of the Mac-end of the display-cable, provided everything on that cable is ready-to-go
• hold the Option key while you click on the (Detect Display) button that will appear in Displays preferences (from another display)
so try doing some of those things and see if the display comes alive.
Modern Displays with multiple ports are sometimes busy scanning the other ports, looking for an input, and miss the query from the Mac. They need to pay attention to the port you are actually using, or they will miss the query.
Some displays have On-Screen Display settings that can be used to tell the display a computer is attached on a certain port, or a certain port should be highest priority. Changing those may make your display more responsive.
Some displays include their own private "sleep" settings for the display alone. This can allow the display to enter its own sleep mode, on top of the Mac's not sending it data. A display that is sleeping on its own cannot respond to the Mac's query, and will stay dark.
Thank you for taking the time to reply so comprehensively. I have carefully gone through the steps that you have suggested, still to no avail.
I'm sure it is a Mac Ventura vs Panasonic issue; I can connect to other brands of smart tv and digital projectors with no issues - and of course I could connect with the previous MacOS.
It is very frustrating; I make presentations to audiences and if their system is Panasonic, I have to use a digital projector.
I have updated to Ventura 13.2 but the problem persists.
HDMI cables you want for HDMI-only Displays (higher resolutions than 720p TV sets) are marked as Certified with an anti-counterfeiting tag and are labeled:
"Premium High Speed HDMI cable" or that + "with Ethernet" --OR--
"Ultra High Speed HDMI cable" or that + "48G"
Cables with No Certification tags are good for your standard 720p TV set, and not much more.
Although I questioned why a cable would work for one HDTV and not another, I did purchase the type of cable you suggested just in case there was an issue with my existing one. Still not connecting and still the display doesn't even appear as a option.
The problem only appears to exist when trying to connect to Panasonic smart TV since the new Ventura OS.
I had another update to the OS today; 13.2.1, still no connection.
I'm no expert but it suggests to me that either Ventura itself is the issue or it's possibly conflicting with something stupid like a font!
The Mac uses a system that reminds me of “Plug and play” to determine what display is connected, and what its capabilities are.
To get a Mac display to become active, you need the Mac to query the display, and the display to answer with its name and capabilities. Otherwise, the display will not be shown as present, and no data will be sent to the display. "No signal detected" is generated by the DISPLAY, not by the Mac.
This query is only sent at certain times:
• at startup
• at wake from sleep — so momentarily sleeping and waking your Mac may work
• at insertion of the Mac-end of the display-cable, provided everything on that cable is ready-to-go
• hold the Option key while you click on the (Detect Display) button that will appear in Displays preferences (from another display)
so try doing some of those things and see if the display comes alive.
Modern Displays with multiple ports are sometimes busy scanning the other ports, looking for an input, and miss the query from the Mac. They need to pay attention to the port you are actually using, or they will miss the query.
Some displays have On-Screen Display settings that can be used to tell the display a computer is attached on a certain port, or a certain port should be highest priority. Changing those may make your display more responsive.
Some displays include their own private "sleep" settings for the display alone. This can allow the display to enter its own sleep mode, on top of the Mac's not sending it data. A display that is sleeping on its own cannot respond to the Mac's query, and will stay dark.
I have this same issue, specific to a Panasonic TV, and only since upgrading to Ventura. I recently went to 13.3, in hope that the issue had been resolved, but no.
Apple - surely this is a simple fix. It was working before, and it is now no longer.
Please fix!
Does it work when booted into Safe Mode? Some users have reported success, which may lead to an extension conflict.
Connecting to TV
