Comment 53 for bug 1646277

Thanks, can you next test 4.2.0-16:
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/8099555

Also, this bug might be very related to graphics hw. Some server boards with remote management capabilities use something like Matrox or similarly exotic. In the past we sometimes saw problems switching framebuffer devices. Things that maybe can help are changing grub to console mode or adding nomodeset into kernel parameters. (If you change GRUB setting, be sure to run "sudo update-grub" before rebooting).