This bugreport was filed with the stock 16.04(.1) stack though, with kernel 4.4 and xserver 1.18 but with an updated mesa. The failure here is that some symlinks to amdgpu-pro got overwritten (since they were owned by mesa, not amdgpu-pro..), and those need to be fixed manually.
To do that I think this should be enough: apt --reinstall install libgl1-amdgpu-mesa-dri That should restore the symlinks. AMD has fixed this bug in newer releases, so that if the system mesa is upgraded, the symlinks restoration is triggered after the upgrade. ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1820323 Title: xorg crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1820323/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp