Last week I let my mid-2012 13″ MacBook Pro apply the latest update for Mac OS High Sierra, version 10.13.4. That, it seems, was a mistake.
Ever since that day, when I close the lid and let it sleep for more than a few minutes, it will crash on wake up. The only errors I see in the system logs are regarding com.apple.preference.displays.MirrorDisplays not starting properly. Looking online for the error message [“com.apple.xpc.launchd  (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.”], I found a number of places reporting that it has been happening to them in various releases of High Sierra. In all the cases I saw, the errors are in the logs and the computer fails to wake up from sleeping.
Oddly enough, the remote initialisation of the DVR did nothing to fix the problem with it crashing when it tries to record. I come in tonight to find it locked up in the same way as before.
I’m not yet convinced that this is a hardware issue though. So I am not expecting the box they bring on Monday to fix this issue unless it is a different unit (or has fixed software on it). Others are also having problems with the Motorola DCH3416, and Comcast’s service in general by the sounds of it.
And, yes, that’s yet another visit (my third so far) from the Comcast technicians – I asked tonight if they can book recurring appointments so they can just come out the same time each week and fix whatever has failed since the last visit. At the rate they’re going, they may as well just park out front.