Kernel.org: 4.20.10
sid (unstable): 4.19.20-1
buster (testing): 4.19.16-1
stretch (stable): 4.9.144-3
jessie (oldstable): 3.16.59-1

Debian GNU/Linux device driver check & report

Giga-byte: ga-990fxa-ud3

PCI IDWorks?VendorDeviceDriverKernel
1002aa80Advanced Micro Devices [AMD] nee ATICayman/Antilles HDMI Audio [Radeon HD 6900 Series]