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Yep, it is it. Here is X server log: [ 1184.167] X.Org X Server 1.19.0 Release Date: 2016-11-15 [ 1184.167] X Protocol Version 11, Revision 0 [...
Actually, any display manager fails to start. Lightdm simply fails with blank screen, with sddm from KDE I've got segfault: [IMG] Seems that this...