I recently bought a Dell XPS 15 with an Intel HD Graphics 530 installed.
Here is what my monitor should look like:
And this is what my monitor looks like when I say it is:
So this problem seems to be occurring whenever I right click on my desktop, and select Graphics Options > Output To and then select my secondary display. However, the problem first occurred if I had an HDMI cable plugged in before I had unlocked the laptop.
Since then I attempted to uninstall the Intel HD Graphics driver, which caused the laptop to restart. Once restarted, the video card automatically reinstalled the driver and the problem appeared to go away. However, if I restarted the laptop again the problem returned. So the problem seems to disappear if the laptop is started without the driver installed, but if it is already installed on start up, then the problem occurs.
A peculiar thing I noticed as well is if I select 'Second screen only' from the Windows 10 project menu, the monitor will sometimes not appear washed out, however if I select it from the Intel HD Graphics menu, then it will appear washed out as long as the laptop booted up with the drivers already installed.
A couple other symptoms I noticed since trying to update the graphics driver are black right-angle triangles seem to appear on pop-up menus, but only on the secondary display. Also, the desktop background will go black and I will only be able to select colors from the personalize menu, not an image.
Does anyone have any idea what is going on and how I could fix this?