I have a new laptop with a set up as such,
- lid closed, laptop on connected to external mouse and KB and large screen. This is for home working which I main use it for. Then disconnect and use as portable laptop when travelling.
I want to use the mouse or keyboard click to wake it up. All other LTs I have had do this.
There's a similar question but on a another series machine.
The obvious power mgt features do not seem to offer this.