I've searched the forums and the bugs, and if this issue has been reported, I haven't found any mention of it.

The hardware on the machine I'm using passed a suite of hardware diagnostics with no problems.

I have only one video card, it has a VGA output and a DVI output; I am using ONLY the DVI output, and it is directly cabled to a monitor which works just fine. Yet, the messages further below, which I've enclosed in code tags, are what I see in the journal for just a single second.

I have to accomplish some work which for me is very important, so although I normally use KDE I've temporarily switched to Gnome, since I can't afford delays.

I'd appreciate any info., is this some known issue? If so, is it functional, e.g. likely to cause crashes, or is just overzealous use of log messages, or what?

Or am I missing something; because it seems as if kscreen seems to think that the display has changed, but if I'm thinking correctly, it's showing the same display label for both the "before" and "after" display.

Code:
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )
Apr 03 13:38:56 dev-mach org.kde.KScreen[2585]: kscreen: Primary output changed from KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" ) to KScreen::Output(Id: 98 , Name: "DVI-D-1" ) ( "DVI-D-1" )