This sounds much like bug #745112 although the chipset is different. Install and boot this kernel, and see if it fixes it: http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next-proposed/
If so, then install this kernel and see if it also fixes it or not: http://people.canonical.com/~acelan/bugs/lp753189/ If it does, then that'll narrow down what patch the kernel team needs to pull. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/756624 Title: [pineviewgm] black screen attaching external monitor (x86_64) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
