My computer displays a black screen on waking from suspend/hibernate.
This problem was present on 14.04, but was solved when I changed to a proprietary driver (NVIDIA). I recently wiped my Ubuntu 14.04 LTS and installed Ubuntu 16.04 LTS (Xenial Xerus), and faced the same old problem, however, this time it was not solved by changing the driver.
I tried the fixes given in the following pages but to no avail:
- Blank screen after suspend/hibernate on 14.04
- Laptop Screen Black After Suspend
- http://ubuntuforums.org/showthread.php?t=2220085
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1283938
I am using an HP Pavilion 15 Notebook, with NVIDIA GEFORCE Graphics card.
Best Answer
If you don't have enough space on your swap partition, you might get a black screen when you awaken your system from hibernation. The black screen used to happen to me, until I decided to sacrifice the necessary hard drive space for Suspend-to-Disk (hibernation).
Your swap partition needs to be at least as big as your RAM size.
This is covered in the The Official Ubuntu Swap FAQ:
Here's a table of example swap partitions, relative to RAM size, taken from The Official Ubuntu Swap FAQ. They recommend a swap partition a little bigger then your RAM.
If you don't have enough swap space, then Suspend-to-Disk will not work.
Click this link to learn how to increase your swap space.