After reinstalling Ubuntu 16.04 on my MacBook Air suspend doesn't work properly. I am able to suspend, and able to wake my laptop again, only the screen is entirely black.
No matter what I do, it stays black. I have tried entering TTYs, restarting
lightdm over ssh, but nothing works. I know the computer is on, since I am able to access it over ssh.
Update: I have found that the problem only occurs when booting with the
nomodeset option. Apparently this option lets the kernel handle the graphics, and as pointed out by @kukulo there is a bug in the kernel. I can boot without this option, but that makes my graphics and boot time significantly slower, so I am still looking for a solution to this problem. I tried upgrading the kernel to the latest stable release, but I am still seeing the problem.