Notebook dont sleep

[Straight]

adding to what @Bro said,

sudo pacman -S linux-lts linux-lts-headers

Then from grub while booting select advanced options using arrow keys and Enter and in there choose linux-lts.

check this it may help :

Sleep Issue

Is there a particular reason you are booting in legacy mode? The initial few suggestions I can provide are Visit this post and see if it helps → Waking up from suspend - #3 by BluishHumility If it doesn’t, undo the changes you made to grub and run sudo update-grub again. Try updating your UEFI to the latest version available by the vendor for you. Try booting in normal mode if you don’t need legacy for some specific reason. Try the LTS kernel, sudo pacman -S linux-lts linu…