10.14.6 supplemental update causes hard system crash (GPU panic)

[Ricebucket]

I have an imac with an Vega 48 and an external 30" monitor attached through displayport through a thunderbolt 3 dock.

After installing 10.14.6 supplemental update, the system would crash whenever it is going to sleep. I have to press the power button to restart it. The first such crash occurred only 20 minutes after installing the update, and it is 100% reproducible at this point. It only occurs when the computer is idle.

Looking at the system crash logs, I see a "gpuRestart" log whenever this occurs. I assume this is the cause of the crash.

Is anyone else having this problem?

 

[davyhuang]

I am having issue when I wake the Mac, and the mouse click don't work anymore. I can still navigate and use Touch Bar to command the app and access Activity Monitor, but closing all the process doesn't bring back the Mac. I have to press power to force restart Mac. I saw some thread having same issue.