I'm running Ubuntu 17.10 on a Lenovo X1 Carbon 6th gen. When closing the lid or putting the laptop to sleep manually, I notice that the battery drains as fast as when I'm using it. The laptop gets hot if I transport it in a sleeve during sleep. Both the power button and the ThinkPad red LED at the back of the screen are blinking, indicating that the suspend mode is activated.
Any advice in making the sleep mode more efficient? I don't want to shutdown and restart my computer every time I need to transport it.