Re: Drivers for various hardware
According to Google, Your Gigabyte card is an AMD Radeon R9 270. That might pose some serious problems.
I recently acquired a Radeon R7 240 -- and, unlike with my previous AMD HD 4290, the open-source drivers are garbage. They won't give me full resolution or multiple desktops and any attempt to install them through the repositories crashes my system.
Ubuntu 17.04 Mate, Mint 18.1 Mate; MS Win 8.1, MS Win10 Pro.
Will not respond to PM requests for support -- use the forums.