Linux Find Out If the PCIe / AGP / VGA Driver Is Installed OR NOT [ Radeon X1550 64 bit ] in Categories Debian / Ubuntu, Hardware, Linux, Package Management, Troubleshooting, UNIX, X Server last updated May 13, 2010I‘ve ATI Radeon VGA [X1550 64 bit] card. How do I find find out if the driver is installed or not under any Linux distribution running xorg server?