This bug was fixed in the package xorg-server-hwe-16.04 - 2:1.19.6-1ubuntu4.1~16.04.1
--------------- xorg-server-hwe-16.04 (2:1.19.6-1ubuntu4.1~16.04.1) xenial; urgency=medium
* prime-sync-refactor.diff: Fix crash on modesetting+amdgpu hybrid. (LP: #1789913)
-- Timo Aaltonen <email address hidden> Wed, 05 Sep 2018 14:31:56 +0300
This bug was fixed in the package xorg-server- hwe-16. 04 - 2:1.19. 6-1ubuntu4. 1~16.04. 1
--------------- hwe-16. 04 (2:1.19. 6-1ubuntu4. 1~16.04. 1) xenial; urgency=medium
xorg-server-
* prime-sync- refactor. diff: Fix crash on modesetting+amdgpu hybrid.
(LP: #1789913)
-- Timo Aaltonen <email address hidden> Wed, 05 Sep 2018 14:31:56 +0300