Hey all, hopefully I'm posting this in the right place. I'm hoping someone more knowledgeable than myself might be able to shed a little light onto the issue I'm having with getting display output from a second GPU in Windows.
I'm using a 5700XT as my primary GPU, and an R9 280 as a simple display adapter due to the fact that one of my monitors only supports 144hz over DVI. This setup has worked as expected for years in Linux, and still does.
The issue is that when booted into Windows 10 I am only getting display output from the 5700XT, and nothing from the R9 280.
- The R9 280 shows up in device manager, sometimes with an "err. 43." and sometimes without; disabling and enabling the device clears this error.
- The R9 280 does not show in "Task Manager".
- The R9 280 shows up as "GPU 2" in "AMD Software: Adrenalin Edition", but under "Driver Details" lists the driver version as "Not Available."
- Only the monitor connected to the 5700XT shows up in Windows display settings.
- The issue persists on both current and legacy drivers, as well as with the basic Windows display driver.
- Both cards are getting plenty of power.
- I have tried e-mailing support but received no help as they couldn't seem to understand that I wasn't trying to run the cards in Crossfire, despite me directly stating that I wasn't trying to run the cards in Crossfire. In the off-chance that the cards were trying to run in Crossfire I tried to disable it, but found no option to disable Crossfire in the settings menus.
I'm hoping this is a simple configuration issue, or that I overlooked some obvious setting somewhere. I only installed Windows to play a couple games with friends, so if there is no fix, I'm not too worried. It would just be nice to not have to tab out constantly.
Thanks a ton.
To address some things preemptively:
- "Just get an active DP-DVI adapter!": No. I'm using the R9 280 as a display adapter because I had it laying around, and have no desire to spend more money on this system when it works fine 99.9% of the time.
- "Just get new monitors!": No. I like my monitors and have no interest in buying new ones at this moment.
- "You're taking a performance hit by having two GPUs!": I don't care.
