ROG STRIX B450-F GAMING Block Diagram (looking for missing PCIe lane)
I notice my GPU runs at x8 speed instead of x16, Linux tell my GPU was lane downgraded to x8root@hitoha:~# lspci -vv | grep -P "[0-9a-f]{2}:[0-9a-f]{2}\.[0-9a-f]|LnkSta:"08:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Caicos...