this post was submitted on 16 Jul 2025
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Laptop battery goes flat, when powered off, only on Debian (lemmy.ml)
submitted 5 days ago* (last edited 3 days ago) by makingStuffForFun@lemmy.ml to c/linuxhardware@programming.dev
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Hi all,

I had this laptop (Lenovo Carbon X1 Gen 6), and when it had Debian, it would just go flat on sleep, and even when powered off. So strange. I checked all BIOS settings etc, but could never figure it out.

I moved it to Fedora, and it was perfect. Battery life was boosted like crazy, acted as it was meant to.

However, I have tomove away from Fedora, due to them dropping X11 (it's an accessibility issue I'm facing with my tools) and I forgot about said issue with Debian.

Back on Debian now, woke up, powered on laptop, which was fully charged last night, and it's flat again.

What is it, that Debian is doing differently, that is making it go flat, when powered off?

Please note, I am doing a proper shutdown. Not just closing lid, sleep, hybernate, etc.

Any advice greatly appreciated. Thanks so much!

UPDATE: I booted into a fedora live disk, and shutdown. This time the battery did not go flat at all when shutdown, indicating that it is absolutely debian related, not BIOS or anything else.

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[–] makingStuffForFun@lemmy.ml 1 points 4 days ago

Thank you for your thorough reply. I'm working my way through each of people's replies here, hopefully I can find a fix.

I have done systemctl poweroff, and it does switch the system off.

What I do find interesting, is when my laptop goes to sleep by just leaving it, I can't wake it up by pressing any key, or wiggling the mouse, or anything like that. I have to actually press the power button for it to come back to life. This is unexpected behaviour, and not normal. That might give me a clue to research further.

I will report back as I find something. Hopefully I will be able to help someone in the future. I'll definitely leave kernel stuff until the bitter end.