3840x2160 after update not available anymore
 

Hi all,

i just updated to 1.9. (from i think 1.8).
i have 6 monitors connected to my macbook pro, using 2 plugable hubs, some directly connected.

everything was working fine all the time but now since the most recent update to 1.9. i cant configure one of the LG27UP850 Monitors anymore to 3840x2160.
This one is connected through DP Cable on a plugable. the maximum resolution showing is 3008x1692.

Experimental Solutions in the control panel are activated. but doesnt make a difference.

i tried to remove the 1.9. and go back to 1.8.1 and 1.8. and
but still the resolution of 3840x2160 is not showing anymore.

i have now changed the cable and using now a hdmi instead of the dp
everything works fine now.. but its strange. this setup was working for a year without a problem and even after the downgrade it didnt work anymore