[Trisquel-users] Re : Problem installing KDE

[magicbanana]

In the Synaptic package manager, click, in the lower-left corner of the  
window, on the "Custom filter" button (translated from French, it may be  
named differently) and choose "Broken" in the list above. You should not have  
any package listed on the right side of the window. If you do, you should  
first fix that.

As for "triskel", it is indeed the equivalent of "kubuntu".