• How to Disable Suspend and Hibernation Modes In Linux

1. Disable Suspend and Hibernation in Linux

To prevent your Linux system from suspending or going into hibernation, you need to disable the following systemd targets:

sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

$ sudo systemctl status sleep.target suspend.target hibernate.target hybrid-sleep.target
[sudo] password for alexlai: 
○ sleep.target - Sleep
     Loaded: loaded (/usr/lib/systemd/system/sleep.target; static)
     Active: inactive (dead)
       Docs: man:systemd.special(7)

○ suspend.target - Suspend
     Loaded: loaded (/usr/lib/systemd/system/suspend.target; static)
     Active: inactive (dead)
       Docs: man:systemd.special(7)

○ hibernate.target - System Hibernation
     Loaded: loaded (/usr/lib/systemd/system/hibernate.target; static)
     Active: inactive (dead)
       Docs: man:systemd.special(7)

○ hybrid-sleep.target - Hybrid Suspend+Hibernate
     Loaded: loaded (/usr/lib/systemd/system/hybrid-sleep.target; static)
     Active: inactive (dead)
       Docs: man:systemd.special(7)
   alexlai@hc4Gnome    sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target
Created symlink /etc/systemd/system/sleep.target → /dev/null.
Created symlink /etc/systemd/system/suspend.target → /dev/null.
Created symlink /etc/systemd/system/hibernate.target → /dev/null.
Created symlink /etc/systemd/system/hybrid-sleep.target → /dev/null.
 
    sudo systemctl status sleep.target suspend.target hibernate.target hybrid-sleep.target
○ sleep.target
     Loaded: masked (Reason: Unit sleep.target is masked.)
     Active: inactive (dead)

○ suspend.target
     Loaded: masked (Reason: Unit suspend.target is masked.)
     Active: inactive (dead)

○ hibernate.target
     Loaded: masked (Reason: Unit hibernate.target is masked.)
     Active: inactive (dead)

○ hybrid-sleep.target
     Loaded: masked (Reason: Unit hybrid-sleep.target is masked.)
     Active: inactive (dead)

2. Enable Suspend and Hibernation in Linux

To re-enable the suspend and hibernation modes, run the command:

$ sudo systemctl unmask sleep.target suspend.target hibernate.target hybrid-sleep.target

3. Open the GNOME Settings app and navigate to the "Privacy" section.

• Under the "Screen Lock" section, change the "Automatic Screen Lock" setting to "Off". This will prevent the screen from automatically locking after a period of inactivity.
• Check your power management settings in your BIOS or UEFI firmware to make sure that there are no settings that are causing your computer to go into a low-power state or suspend mode after a period of inactivity.
• Check your system logs to see if there are any error messages related to power management or suspend mode. You can view the system logs by opening a terminal window and typing the following command:

journalctl -b

4. If all else fails, you can try disabling suspend mode and power management altogether by adding the following kernel boot parameter:

noacpi

• To add this kernel boot parameter, edit your GRUB configuration file by typing the following command:

sudo nano /etc/default/grub

• Add the "noacpi" parameter to the "GRUB_CMDLINE_LINUX_DEFAULT" line, like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash noacpi" or "acpi=off apm=off"
# my orangepi5
GRUB_CMDLINE_LINUX_DEFAULT="loglevel=3 quiet acpi=off apm=off"

• Update GRUB by typing the following command:

sudo update-grub

• archlinux

git clone https://aur.archlinux.org/update-grub.git
cd update-grub
makepkg -si
$ sudo mkdir /boot/grub
[alexlai@orangepi5 update-grub]$ sudo update-grub
Generating grub configuration file ...
Found linux image: /boot/Image
Warning: os-prober will not be executed to detect other bootable partitions.
Systems on them will not be added to the GRUB boot configuration.
Check GRUB_DISABLE_OS_PROBER documentation entry.
Adding boot menu entry for UEFI Firmware Settings ...
done

• Then restart your computer.

5. Not Nwcessary --->To prevent the system from going into suspend state upon closing the lid, edit the /etc/systemd/logind.conf file.

$ sudo vim /etc/systemd/logind.conf

Append the following lines to the file.

[Login] 
HandleLidSwitch=ignore 
HandleLidSwitchDocked=ignore