Good evening at the forum,
sorry for my English

I have a question that I can not solve and I ask the more experienced.
I installed the ubuntu server 16.04 update the kernel to version 4.19, installed the amdgpu-pro video drivers.
sgminer, claymore etc. they work correctly, but only 5 video cards start and not all 11 gpu.

giving the command "sudo sensors" all 11 gpu ati are recognized.

I ask for advice and help to solve the problem to the most experienced. What's the reason ?
the installation was performed on a 16gb and 32gb usb stick even if this does not really matter because for example ethos on usb recognizes them all.
the motherboard used and Asus with 19 pci.

I am waiting for advice and criticism

thank you