Let me explain problem in quick bullets:
What I want: I would like to use ultra wide external display with 3440x1440@50hz resolution with my MacBook Pro (Retina, Mid 2012). I would like to use my Thunderbolt port on mac, and my HDMI 1.4 input on my display.
I can successfully connect my display using: - HDMI -> HDMI with 3440x1440@50hz - TB -> DP (via TB -> DP adapter) with 3440x1440@50hz
I can partially successfully (with limited resolution) connect my display using: - TB -> HDMI (via TB -> HDMI adpater) with 1920x1080@60hz (max)
Question is: Is it matter of my adapter? For me it seems like it doesn't support HDMI 1.4, but only lower standard. (I have no idea how to check adapter type/support. There was no information about that on the product box). Or maybe that is basically not possible to convert signal properly with TB/DP -> HDMI adapter?
Please advise. Thanks, Tomasz
P.S. I have MacBook Pro Retina (Mid 2012), GeForce GT 650M 1024MB, OS X El Capitan (10.11.3).