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m0nkeyb0y

macrumors regular
Original poster
Jun 16, 2009
168
119
Looking for suggestions.

Running a 16" MBP since November, connected to a powered dock (+2 monitors) and a third external monitor, connected directly over USB-C. Clamshell has worked fine up until recently.

Problem 1

Since 10.15.4, including the Supplemental, I can't run clamshell at all. If I connect my stuff as normal and close the laptop, the external monitor screen resolution changes, and everything freezes except the cursor. I can still move it, but can't click on anything. If I wait long enough, it reboots.

On reboot (still in clamshell), I get the normal login screen, and I can mouse around, but can't click on anything, whether with a USB mouse connected directly or a Magic Trackpad2.

If I then open the laptop, I can click on things and log in.

If I leave it closed, after a few minutes it reboots. IF left alone, this cycle will repeat every few minutes.

If I put it to sleep or just leave it for an hour or so, I come back to find it's crashed and rebooted, to the login screen.

Also, my Bose Companion USB speakers keep disappearing. This was a problem a few years ago (something about apple and USB), but was fixed... until 15.4. Now, often, if there's a pause or silence, they'll quit outputting sound. I have to unplug and replug the USB to get them to produce sound again.
 
Bump. I installed the newest beta, hoping for a fix. No luck
 
You can always download macOS 10.15.3 and install it. I’m staying at 10.15.3 for a long time because of all the issues 10.15.4 is showing.

I know it sucks, but it is worse for iOS/iPadOS where you can’t downgrade the software version...

Report the issue to Apple and hopefully they will fix it.
 
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