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.
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.
