The screen issue is sort of fixed. Went from one problem to another. To cut a long story short, I already had a monitor which I was using with an Apple TV through HDMI, this was an LG-27qn880 and then I got another monitor the LG UltraFine 32UN880 to replace that and use the smaller one as a WFH setup. But, neither monitor would work happily with the MacBook Pro's (2016 & 2020) or the iPad Pro's. The 32" monitor would charge everything, but wouldn't display anything.
After a hour on the phone with Apple, and a further hour on the phone with LG trying a combination of all the devices and supplied cables, it transpires that the USBC port on the 27" monitor is faulty and is off for warranty repair, and the cables LG supplied with both monitors don't work with Apple devices. I ended up getting a Thunderbolt 4 cable which works perfectly with the 32" monitor, it charges and displays perfectly, despite displaying a warning message that it's not LG compliant.
And LG are sending a couple of sets of new USBC/Thunderbolt cables to see if this fixes the issue.
Ahhh not the Apple Ultrafines then.
Not all TB3 cables are created equally, in fact they are a real pain. The 32 Ultrafine talks of USB C which isnt TB3, and then you've got passive and active TB3 options, but sounds like you've got it sorted now which is good!
Yes, they're not the Apple ones, just the normal Ultrafines. The Apple ones were discontinued earlier in the year and I couldn't find any anywhere. I think stock was already gone by the time they pulled them from the Apple store.
The screen issue is sort of fixed. Went from one problem to another. To cut a long story short, I already had a monitor which I was using with an Apple TV through HDMI, this was an LG-27qn880 and then I got another monitor the LG UltraFine 32UN880 to replace that and use the smaller one as a WFH setup. But, neither monitor would work happily with the MacBook Pro's (2016 & 2020) or the iPad Pro's. The 32" monitor would charge everything, but wouldn't display anything.
After a hour on the phone with Apple, and a further hour on the phone with LG trying a combination of all the devices and supplied cables, it transpires that the USBC port on the 27" monitor is faulty and is off for warranty repair, and the cables LG supplied with both monitors don't work with Apple devices. I ended up getting a Thunderbolt 4 cable which works perfectly with the 32" monitor, it charges and displays perfectly, despite displaying a warning message that it's not LG compliant.
And LG are sending a couple of sets of new USBC/Thunderbolt cables to see if this fixes the issue.