I think they are the same. The bug manifests itself when using xorg, but the root cause is the kernel null pointer dereference.
** Changed in: linux (Ubuntu) Status: Expired => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1579374 Title: amdgpu causes NULL pointer dereference when trying to use Topaz (Radeon R7 M265) GPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1579374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs