Re: Laptop resumes each 1h13 after suspend-to-ram
On Fri, Sep 12, 2025 at 11:35 AM Eugen Dedu <eugen.dedu@univ-fcomte.fr> wrote:
>
> On 11/09/2025 23:42, Jeffrey Walton wrote:
> > On Thu, Sep 11, 2025 at 2:45 PM Eugen Dedu <eugen.dedu@univ-fcomte.fr>
> > wrote:
> >
> >> I have a weird problem with suspend-to-ram with my Dell Precision 3591
> >> laptop, which awakes alone/itself, without touching it, each approx. 1
> >> hour and 13 minutes. This problem has existed since I installed Debian
> >> on it, on January. I tested with several kernels, such as linux 6.12
> >> and 6.16. Note that the awake occurs only I suspend by pressing the
> >> button on the keyboard; if I close the lid it does not awake.
> >
> > Update the UEFI before you start down a rabbit hole with the kernel and
> > drivers.
> >
> > It looks like the latest version is 1.11.2 from December 2024. See <
> > https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=h60cy
>
> I am up to date with respect to UEFI, by running fwupdmgr update. I
> currently have:
> └─System Firmware:
> └─Latitude 5550,Precision 3590,Precision 3591 System Update:
> New version: 1.15.1
> Created: 2025-05-12 14:27:25
>
> I do not know if this is the same thing as what you wrote, because I do
> not find your version 1.11.2 in the list shown at
> https://www.dell.com/support/product-details/fr-fr/product/precision-15-3591-laptop/drivers
Next, decide which component should control power management: UEFI or Systemd.
If you choose UEFI, then disable Systemd power state functions. Mask
the sleep.target suspend.target hibernate.target hybrid-sleep.target
units. See <https://www.tecmint.com/disable-suspend-and-hibernation-in-linux/>
(and friends) for the command.
If you choose Systemd, then go to your BIOS/UEFI setup, and disable
S3, S4 and S5 power states. Those power states are sleep, suspend and
hibernate. Systemd will now control them.
Personally, I disable S3,S4 and S5 in the BIOS/UEFI. I allow the
operating system to control them.
Jeff
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