[OSX-Users] Off behaviour: Cutting to pick-user screen

[Christopher Gutteridge]

I've had a few annoyances since I got a new OSX machine running 
El-Capitan 10.11.16.

It's locked up a few times requiring a reboot. But last night was a 
doozy. It was running very hot - it had a 3d game & firefox open and 
both seemed to be causing more load than usual. It had already had one 
sulk about freezing programmes due to a lack of resources, and then I 
had some display corruption -- based around windows not scanlines, so 
I'm guessing drivers not hardware. Soon after that it suddenly threw up 
the pick-a-user screen I logged back in and tried to start firefox but 
it wouldn't as it was already running. Creepiest of all, I heard the 
facebook new-message sound effect as someone messaged me. Firefox was 
still running but I had no way to get back to it. I killed it from the 
command line and then could start firefox and then I tried to return to 
what I had been doing, but two more incidents of throwing me back to the 
"pick a user" screen and I gave up and did a hard reset.

I've also had issues around the WIFI being a big flaky, and this was 
fixed by resetting the NVRAM.

The crashses, by the way, are full lock ups with the mouse still moving, 
not the oldschool darkend screen and message in the middle.


-- 
Christopher Gutteridge -- http://users.ecs.soton.ac.uk/cjg

University of Southampton Open Data Service: http://data.southampton.ac.uk/
You should read our Web & Data Innovation blog: http://blogs.ecs.soton.ac.uk/webteam/