Hi, it looks like I'm experiencing the same bug (see #93288 ). I own a radeon 39 R390X manufactured by MSI. Right now I tried the last firmware from git repository but it fixed nothing. (tip for ubuntu users, the package from upcoming xenial is currently shipping the latest hawaii firmwares, I checked them against the latest master: https://launchpad.net/ubuntu/+source/linux-firmware ). I can send you my dmesg if needed.