I have a Lenovo S540 with a Radeon HD8670M and installed Ubuntu 14.04, after reading this bug I was convinced I had the same problem. Booting with "nomodeset" in the boot options enabled unity to load with all kernels. I installed kernel 3.14.1-031401-generic _and_ fglrx and now I'm able to boot into unity. Without fglrx still a blank screen, I can't attach the logs but it appeared that X tried to load fglrx when it wasn't installed..
Hope it helps.. :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1264835 Title: Low graphic mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1264835/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs