On 03/10/2017 12:55 AM, Xen wrote: > my Linux system boots very slowly when I have inserted a AMD R9 380 > graphics card. There is a bios setting that some boards have named PCI Latency Timer. Make sure this is set to 32. And there are settings for UEFI vs legacy video. Also, do you have the proper 8-pin power cable connected to the card?