I had the same problem with my USB3.0-card.
lspci -v showed Kernelmodule xhci_hcd in use.
I blacklisted this module: sudo echo blacklist xhci_hcd > /etc/modprobe.d/blacklist-xhci_hcd.conf
For acpiphp Kernelmodule: sudo echo acpiphp >> /etc/modules
After reboot everything worked. No need for pciehp.pciehp_force=1
I had the same problem with my USB3.0-card.
lspci -v showed Kernelmodule xhci_hcd in use.
I blacklisted this module: d/blacklist- xhci_hcd. conf
sudo echo blacklist xhci_hcd > /etc/modprobe.
For acpiphp Kernelmodule:
sudo echo acpiphp >> /etc/modules
After reboot everything worked. No need for pciehp. pciehp_ force=1