Brian, because you don't understand why I'm asking a question, doesn't make the question less relevant. The driver you are having the problem with is the open source driver. If one isn't using fglrx, then one is also using an open source driver (although a different version).
Despite this, to further clarify, when you say in 15.10 when you didn't have fglrx installed it was in low graphics mode, did you have to use any WORKAROUNDs or does it boot up that way by default? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1606071 Title: [HP ProBook 455 G3] Unable to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1606071/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs