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 15.04 Mate, Mint 17.1; MS Win 8.1, Win10 TP.
Will not respond to PM requests for support -- use the forums.