Check your PCIe bus speeds in the Radeon settings / system / hardware section, you won't be able to enable Crossfire if one GPU is running at a low PCIe speed.
I am having a simalar issue with crossfire Fury X.
I have rolled back my drivers to 16.4.2 and crossfire works on that.
On CCC i had to enable crossfire in order to get it to work, now the option isnt there. Has it changed location and if so how do i get to it now?
I have tired uninstalling and reinstalling the latest drivers (16.7.2), this dosnt work.
Just for reference. my PCIe speeds on my cards are x16 for one and x8 for the other, this has never caused an issue in the past.
i7 5820k Processor
16GB DDR4 Geil Memory
Gigabyte X99M-Gaming 5 Motherboard
2 x R9 Fury X GPU
256GB Samsung 950 Pro SSD.
Windows 10 64 Bit
If there is no fix i can always revert back to 16.4.2, but i do like to keep everyhing up to date especially with the performance enhancements you are adding in every update.
Is this a known issue or is there any fix for it?
I would quite like to use my second GPU
Can i get a responce please? This is getting rediculous.