User-Agent:       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.21 (KHTML,
like Gecko) konqueror/4.14.9 Safari/537.21
Build Identifier: 

I am using a KVM switch to share keyboard, video, mouse between two computers.

On one of those computers, I used "gdm" to login to Plasma 5.

Whenever I toggle the KVM switch, the desktop crashes and I am back at the
"gdm" login screen.

If I switch to "sddm" in place of "gdm", then desktop session stays up. 
Togging the KVM switch does not affect anything.

I tested this with Tumbleweed, in a different partition on the same computer. 
And everything seems fine in Tumbleweed.  It looks to me as if the version of
"gdm" and of "wayland" is the same in Tumbleweed and in Leap.  I do not know
what makes Leap sensitive to this problem.

Reproducible: Always