I have an Asus PB278 (WQHD 2560x1440) connected via HDMI cable + HDMI-Thunderbolt adaptor to my MacBookPro Late 2011.
Until the update to OSX 10.9.2, I was able to use full WQHD resolution on my external Monitor. Since the update, the highest resolution I can choose is 1080p. It seems that the Monitor driver is broken or simply wrong.
Also, in the system information, the monitor is listed as 1080p TV ?!+
Has anyone the same problem? I did not find an update for the monitor profile. Is this a fancy Mavericks bug?
I've zapped the PRAM but that did not change anything. In Monitor Settings, tried to "detect monitor" and listing all resolutions - to no avail. Thanks for you help