At least for me, it has to do with certain kernels and them somehow not working unless resizable BAR is on in the BIOS settings (and “Above 4G decoding”, which under certain kind of BIOS, this setting auto-enables if you enable resizable BAR. This setting varies in name however).
Even in the LTS kernel it was giving me issues until I changed those BIOS settings. 
Well… anyways, as stated before there should be a fix in the works (looks like the issue is closed now).