Dell S2409w flickering green pixels and stripes

[syndr0m]

I took my Dell S2409w monitor with me while travelling. I put it between my luggage and covered the screen with cardboard and tape. This is how it got out:

1) If I disconnect the DVI cable, the screen looks perfectly fine (see pics below)
2) The shape of the green distortion is different for white/black

What's possibly wrong and is it fixable?
I'm gonna try a HDMI cable tomorrow, hoping the problem will magically disappear.

 

[syndr0m]

Oh and the DVI cable works fine with same laptop + different monitor.

 

[syndr0m]

Bought a Displayport to HDMI cable and screen works fine again.