Hello everyone. Not sure if this is a thread for helping people solve technical issues but here goes. Some back story before I get to my question:
I just purchased the X900E today to use as a screen for my gaming PC. I'm planning to build a new PC soon that will handle 4k. In the mean time I'm trying to use this TV on my current gaming PC which has a Radeon R9 390. From what I've read online, the R9 390 is only capable of 4k @ 60hz via display port, and I do not have an adapter for that currently so I'm forced to connect the TV to the HDMI port which is not a 2.0 port.
30Hz looks terrible for games, obviously, so in order to have 60hz I need to run the TV at 1080p. This is where my problem begins. I cannot figure out how to get the TV to cooperate with my video card and display 1080p @ 60hz. I've looked through the options under Action Menu > Picture adjustments and under Home > Settings > External Inputs/Picture and Display and cannot figure out why it won't run at that resolution.
Currently I have my desktop resolution set to 1920 x 1080. Refresh rate is 29hz according to the monitor properties in Windows, and only goes up to 30hz in the options there. If I hit Action Menu > Display I get an info bar at the top of the screen that tells me the screen resolution is set to 3840 x 2160p. I feel like the TV and PC are not communicating their settings properly to each other, or I'm missing a settings menu somewhere, or I'm just, well, stupid.
I should also mention that after having these issues, I suspected perhaps my HDMI cable was too old. It's labeled High Speed and from what I read that should have been sufficient for what I'm trying to do. I went out and got an HDMI 2.0 cable anyway, 18Gbps 60hz capable according to the packaging, and still have the problem.
Anyone have a clue what's wrong? Did I overlook something simple?