Last time I used my laptop, I had it plugged in, and so at the time I closed the lid and put it into suspend mode, it had 100% power. However, when I opened the lid now, the a day later, and resumed work, the power is down to 40%.
I've noticed before the laptop losing power while in suspend mode, but so far it's always been in the range of 5~10%, so I thought that was a lot, but I assumed it might be a normal amount of power drain.
I understand that suspend mode does use a small amount of power to keep the memory in RAM, but clearly a drop from 100% to 40% in 24 hours indicates a problem.
I already have the TLP power management system installed.
Why is my Ubuntu 15.10 laptop losing so much power during suspend mode?