I am experiencing an issue whilst using a monitor connected via DisplayPort.
I have been using the exact same setup for half a year now, and from friday to saturday it suddenly stopped working.
When I turned on my PC on saturday my primary monitor (the displayport one) was set to 800x600 resolution (it wasn't the day before).
When I un- & replugged the monitor it showed a mere black-screen. On my secondary monitor (DVI), the Windows-Resolution frame
displayed the displayport monitor as connected but the resolution settings were grayed out, being set to 800:600.
I initially thought it would have to be a software issue, so I installed multiple new driver-versions (details below).
Nothing changed. I also tried a new DisplayPort-Cable with no effect at all. When I connected the monitor via HDMI though, it worked as it should. (Can't use 3 monitors then, tho).
When I installed the Catalyst Driver Version I received this alert:
[German-to-English] The system encountered an error connecting the computer to the displayport-monitor, which is why using it at a high resolution
or with a high frequency is not possible. (...).
It's not the monitor, nor the cable, nor the driver (?)
What System am I using?
GPU: AMD Radeon R9 270X
Windows 7 64-Bit
Drivers I tried:
Crimson Edition 15.12
Crimson Edition 16.1.1 Hotfix
(sorry for some germanthere, I'll answer all questions)
I started using DisplayPort since I wanted to use 3 monitors at once.
The other once are connected via DVI and HDMI, and DisplayPort is apparently required if you wanna use more than just two monitors.
Maybe there's a workaround here?
For better multi-monitor support I have "DisplayFusion" installed, a multi monitor tool.
I already tried uninstalling that - no effects.
My Question to you:
I know this probably isn't a lot to work with, but still - do you have any clue what could have caused this and how I can fix it?
Or more likely - what information can I provide you with to have a better chance of finding a solution here? (I do not know too much about this stuff, sorry for that..)
Thanks in advance for your input.