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I'm certain you can do this with a udev rule. I used something simmilair to prevent my laptop from waking when the screen flexes on the keyboard wile it is in a bag.
This article in the arch wiki might be helpful: https://wiki.archlinux.org/title/Power_management/Wakeup_triggers
You could just drop the line into a script (without the sudo) into /usr/local/bin/ and call it on startup.
If you use systemd it's as simple as:
[Unit]
Description=Disable Lid Suspend
[Service]
Type=oneshot
ExecStart=/usr/local/bin/lid-suspend
[Install]
WantedBy=basic.target
Just drop it into /etc/systemd/system/lid-suspend.service and then call sudo systemctl daemon-reload and sudo systemctl enable lid-suspend
Thank you for this!🙏 I was going this way, but found that some udev config may need change, see update to post.
You can try to set HandleLidSwitch=ignore event defined in /etc/systems/logind.conf. That will definitely prevent the laptop from sleeping on lid close. It might also prevent the laptop from waking on lid open.
Regardless, I suggest hunting down what broke that setup recently. Its probably some new daemon is responsible for configuring those events in a less arcane way.
Thank you. In my case, unfortunately, changing the HandleLidSwitch* options didn't work. Luckily changing udev settings did the job!
Just for completions sake. Did you change them all?
There's HandleLidSwitch, HandleLidSwitchExternalPower and HandleLidSwitchDocked
Edit: Oh, I did missed the "*". So assume that is a yes.
Yes, all three. Also tried adding these options in a separate file in logind.conf.d/. Some searches on StackExchange show that this worked for some, indeed.
I would assume your system is using systemd (I don't use Kubuntu specifically); the laptop lid is (now in 2026) controlled by the systemd infrastructure - it's a matter of setting a config option and this should fix you up. Arch as usual has the best wiki on the subject:
https://wiki.archlinux.org/title/Power_management#ACPI_events
You're probably looking at HandleLidSwitch* options. There's still nothing wrong with the manual disable to /proc/acpi/wakeup to cover your bases (layers of the onion), I'm fighting with a "modern" laptop that only has s2idle and it's terrible compared to S3 - I'm in ACPI wakeup hell and still trying to figure out what's causing it.
Thank you for this 🙏. I tried the HandleLidSwitch* options, setting them all to "ignore", but unfortunately it didn't work in my case. Adding or modifying udev rules luckily did!
This reminds me of the new trend of kids breaking hinges and propping laptops open with fruit or whatever so they can keep AI running without "sleep" or "wake"
The solution?
Dunno. Just wanted to share my thoughts
My laptop's lid doesn't have hinges, that's part of the problem. But besides that, it's simply something I don't want. For me it's enough if the power button and the "Fn" button wake up the laptop.
It's just a toggle related to your screen being on/off.. depending on your flavour of Linux, nay.. regardless; someone will have a patch.
This conversation helps bring eyes onto this post. One of these kind travelers will have the solution and even provide a link.