10.15.6, external display problem
Both screens are not displayed when connecting an external monitor after 10.15.6 upgrade.
Before the upgrade, it worked fine in version 10.15.5.
Is there any solution about this ?
MacBook Pro 16″, macOS 10.15
Both screens are not displayed when connecting an external monitor after 10.15.6 upgrade.
Before the upgrade, it worked fine in version 10.15.5.
Is there any solution about this ?
MacBook Pro 16″, macOS 10.15
I just discovered this thread. There is another thread about the same topic, but this seems more active.
I'll state my problem:
Hardware:
MacBook Pro 16"
All external Displays I tried this with (all result in the same Problem):
Adaptor I have this problem with:
Belkin USB-C to VGA adaptor (F2CU037)
This Problem immediately occurred after the update to macOS 10.15.6. I had a display connected right before the update (it was working perfectly) and right after the update (that's when the problem first occurred).
This is a very strong correlation for me. The adaptor works fine with a surface book and all the above mentioned displays, which leads to the conclusion that the problem lies with the macOS update.
When I plug in a Monitor via the adaptor all connected displays and the internal display start to flicker as if they can't properly be detected. This goes into an infinity loop with a flickering pattern (internal display lights up for 1/10 of a second and goes black for 1 second).
I have tried everything mentioned in this thread including rebooting in safe mode, resetting NVRAM and PRAM, etc.
The update to 10.15.7 did not solve the problem.
Of corse I can just buy a new adaptor that supports DP or HDMI (my Belkin HDMI adaptor works just fine) but I think we all agree that this is not acceptable if I spend 6k for a laptop. I have to rely on this adaptor for presentations if there isn't a HDMI available for the projector. So I bought the apple adaptor. But no one can seriously suggest that this is a solution.
Addressing the comments that the adaptor wasn't supporting high speed transmission or a certain resolution or isn't certified. Sorry but this is nonsense. First of all this adaptor worked perfectly fine previous to the update. Second Belkin is a premium brand that supports all standards. Especially with VGA its not a problem of any speed restrictions. With 4k this might be a different story but not VGA.
I will go to an apple store next week, let's see what they have to say. I am really disappointed with apple on this one. I just expect not to bother with something like this.
Hi, I have a similar issue and it's not gone after upgrading to MacOS Catalina 10.15.7.
Any other updates on the issue?
May I ask what dock are you using?
Thanks!
ASUS Zen Screen: https://www.asus.com/uk/Monitors/MB16AC/
Totally agree. Premium price must translate in perfect quality. Apple is the new North Korea. They're stuck in the feedback loop of their own myths.
10.15.6, external display problem