Check the BIOS/firmware, there are different sleep states for Windows and Linux that can be configured. Some just refuse to sleep properly. I had a Dell laptop that would sleep and then wake up when I closed the lid and then stay awake.
Comment on Windows PCs can't sleep properly, and Microsoft wants it that way
MonkderZweite@feddit.ch 1 year ago
Btw, if my pc wakes up seconds after if try to manually via XfCE power menu, but sleeps fine by itself (20 minutes inactivity), what could that be?
pete_the_cat@lemmy.world 1 year ago
drugo@sh.itjust.works 1 year ago
Check journal, you should see either an error or a wakeup reason