Problems logging out

[Roderick Johnstone]

Hi

I've previously reported problems logging out of kde sessions in F22, 
but that was when I was using the nvidia drivers from rpmfusion:
https://bugzilla.redhat.com/show_bug.cgi?id=1238698

I'm now seeing something very similar on nouveau and intel driver 
systems (with the nvidia driver though there was a 100% cpu ksmserver 
process which I don't see now):

On my nouveau driver system, after selecting logout I got the 
dimmed/vignetted screen but no confirmation dialogue to click on. It 
hasn't timed out either, so I'm currently still working on the vignetted 
screens (dual monitor setup).

Another of my users who is using the intel driver on his system has the 
dim screen (but apparently not vignetted) after trying to log out - no 
logout dialogue either.

Anyone else see this?

I wonder if its due to being still logged in after the qt5 5.5 updates 
came in?

If there is any diagnostic info I can get I'd be happy to bz it.

Roderick