power-management
My problem is the opposite of what is described in How to prevent resume from sleep/suspend on lid open?.
If I close my laptop's lid, it automatically suspends, but when I open it up again, nothing happens, and I have to press the power button to wake it up.
How can I make my laptop wake up from suspend when I open it's lid?
( It's an acer v5-171 running Ubuntu 13.10)
I found an open source project that provides extra functionality for devices on the Logitech Unified Receiver. Installing that application and a udev rule from a fork of that project allows me to wake Ubuntu 14.04 from suspend using a wireless Logitech keyboard.
Install solaar from the (now) author's PPA.
sudo apt-add-repository ppa:daniel.pavel/solaar
sudo apt update
sudo apt install solaar
If you don't have git, install it
sudo apt-get install git
Clone the fork with a corrected /udev rule
git clone https://github.com/3v1n0/Solaar.git ~/solaar
Install the /udev rule that will enable resume via the unified receiver
cd ~/solaar/rules.d
./install.sh
At this point, I unplugged the receiver and plugged it back in (as per instructions on the repo). Next, I launched solaar through the Dash and verified that my keyboard was communicating with the app. Finally, I rebooted and tested the Sleep button on the keyboard. After the machine was asleep, I was able to resume using any key.
Go to the system settings and then click on Power. On that menu, you can configure the closed lid behavior.
Best Answer
This needs to be supported by hardware through a sensor for the lid-open event. Unless your hardware supports it, there would be "no-one" who will get notified of the "lid-open" event, and wake your laptop.