(Solved) Mac OS Sierra 4 K with Dell P2715Q screen resolutions

(original post completely changed)

After upgrading to OS Sierra, Mac OS does not recognize correctly apparently my Dell P2715Q monitor and would not offer the complete list of resolutions.

A number of reboots solved the problem - resolutions are fully available.

in the display control panel click on the chipped by holding down the OPTION key

Tags: Mac OS & System Software

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