Patrike,
Update 2
This screenshot shows the app mining with GPU's and CPU's.
The lower window does not show the GPU's under the GPU tab.
The CPU's / cores are shown in the CPU tab (this works fine here)
Also, the top window for the rig, it does not show the GPU's, only the CPU cores are shown.
XmRig is a bit special in how it reports the hashrate. It's just a list of devices without any indication which device is a CPU or GPU. Right now all devices ends up on the CPU tab in Awesome Miner, even if some of them actually are GPU's.
One way could be for Awesome Miner to find out how many CPU cores are used for mining and then assume the others are GPU, but there are more than one way you can restrict the CPU core usage for XmRig so it may not be accurate either. The XmRig API response only reports the total number of CPU cores on the system, not the actual number of cores being used.
One solution could be to let Awesome Miner assume that all CPU cores are actually used by XmRig and any remaining mining devices are considered as GPUs - but it will not be a perfect solution.