KDE plasma second monitor issues after latest update

[CS DBA]

On 12/15/2015 11:11 AM, Duncan wrote:
> CS DBA posted on Tue, 15 Dec 2015 08:57:24 -0700 as excerpted:
>
>> I ran the latest set of updates a few days ago, after the update when I
>> plugged my second monitor in it was not recognized in the "Display and
>> Monitor" section of the system settings. If I boot with the monitor
>> connected it works but only if I boot with it connected.  I have the
>> cinnamon desktop installed as well and it works as expected, can boot
>> just the laptop, connect / disconnect monitors, control them from system
>> settings, etc, so it seems it's not a kernel or display driver issue...
> No immediate thoughts on fixing, but if it worked and now it doesn't,
> don't you think knowing the version where it worked and where it doesn't
> might help people solve it?  KDE/kdeframeworks version, plasma version
> (if frameworks-5 based not kde4 based), qt version, distro and release
> version, what packages were updated, if you know, etc.
>
> It's not like you're posting to a distro list, after all, where most of
> this stuff can be assumed based on what the distro just updated, and
> where most people would be running the same versions...
>
Oh right, my bad...

Fedora 23, KDE Plasma - based on an rpm -qa it looks like version 5.16:
$ rpm -qa | grep kf5
kf5-kfilemetadata-5.16.0-1.fc23.x86_64
kf5-kconfig-gui-5.16.0-1.fc23.x86_64
kf5-sonnet-core-5.16.0-1.fc23.x86_64
kf5-kio-widgets-5.16.0-2.fc23.x86_64
kf5-frameworkintegration-libs-5.16.0-1.fc23.x86_64
kf5-kdnssd-5.16.0-1.fc23.x86_64
kf5-kpty-5.16.0-1.fc23.x86_64
kf5-kio-core-libs-5.16.0-2.fc23.x86_64
kf5-filesystem-5.16.0-1.fc23.x86_64
kf5-ki18n-5.16.0-1.fc23.x86_64
kf5-kbookmarks-5.16.0-1.fc23.x86_64
kf5-krunner-5.16.0-1.fc23.x86_64
kf5-kio-ntlm-5.16.0-2.fc23.x86_64

I've done a fresh install since so I can't tell you what version I was 
at before, fresh install has the same issues


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