I have tried just about every driver package listed on amd.com for the A9-9420 and R5.
The installer will say the hardware detected is unknown. The chipset package worked leaving just the USB 2.0 and ACPI devices unknown. When I look at the radeon installer package file structure, it doesn't look like any usable drivers are available in graphics/packages/drivers/display.
Seems like the installer package has to decompress or generate the files which is strange. Anyway, any help would be appreciated.