Elogind: Difference between revisions
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If the output is <code>No session available.</code>, such as in the case of launching Sway from tty, suspend and many other functionality will not work. The user then must configure a display manager such as {{Pkg|greetd}}, [[SDDM]] or {{Pkg|lightdm|LightDM}}. | If the output is <code>No session available.</code>, such as in the case of launching Sway from tty, suspend and many other functionality will not work. The user then must configure a display manager such as {{Pkg|greetd}}, [[SDDM]] or {{Pkg|lightdm|LightDM}}. | ||
== Doas == | |||
Doas is used to grant permissions for suspend-to-RAM and brightness control with brightnessctl: | |||
apk add doas brightnessctl | |||
# optionally, allow $USER root access with password | |||
adduser $USER wheel | |||
In <code>/etc/doas.conf</code>, set | |||
permit :wheel | |||
permit nopass $USER as root cmd /bin/loginctl | |||
permit nopass $USER as root cmd /usr/bin/brightnessctl | |||
After setting the above, suspend-to-RAM can be triggered by running | |||
/bin/loginctl suspend | |||
(use full path to executable) and brightness can be adjusted by running | |||
/usr/bin/brightnessctl set 100 | |||
== See also == | == See also == |
Revision as of 13:31, 26 February 2024
elogind is a login manager and provides support for
- setting up necessary permissions for the desktop environment or window manager
- handling poweroff, reboot, suspend and hibernate via loginctl command
Installation
# apk add elogind # rc-update add elogind # rc-service elogind start
Polkit is used for authentication. Without it some things may not function. You need to install and configure D-Bus to use polkit.
# apk add polkit-elogind # rc-update add polkit # rc-service polkit start
Set up a PAM login.
Hibernating
For
# loginctl hibernate
to work, you must have a swap partition. Check
# lsblk
for a partition with the mountpoint [SWAP].
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS nvme0n1 259:0 0 953.9G 0 disk ├─nvme0n1p1 259:1 0 200M 0 part /boot ├─nvme0n1p2 259:2 0 100G 0 part / ├─nvme0n1p3 259:3 0 805G 0 part /home └─nvme0n1p4 259:4 0 48.7G 0 part [SWAP]
Remember also to add a kernel parameter to resume, ie in /etc/default/grub :
Contents of /etc/default/grub
Note the "resume=" flag with the same partition that was marked as [SWAP].
Configuration
logind.conf
Edit /etc/elogind/logind.conf to configure handling of power events, such as suspending the computer when power button is pressed:
Contents of /etc/elogind/logind.conf
Working with Desktop Environments
If using a Window Manager or Desktop Environment, such as Sway, the user must ensure that login session is correctly configured. When correctly configured, the loginctl
command should output the following:
~$ loginctl SESSION UID USER SEAT TTY c1 105 sddm seat0 c2 1000 User seat0 tty8 2 sessions listed.
If the output is No session available.
, such as in the case of launching Sway from tty, suspend and many other functionality will not work. The user then must configure a display manager such as greetd, SDDM or lightdm.
Doas
Doas is used to grant permissions for suspend-to-RAM and brightness control with brightnessctl:
apk add doas brightnessctl # optionally, allow $USER root access with password adduser $USER wheel
In /etc/doas.conf
, set
permit :wheel permit nopass $USER as root cmd /bin/loginctl permit nopass $USER as root cmd /usr/bin/brightnessctl
After setting the above, suspend-to-RAM can be triggered by running
/bin/loginctl suspend
(use full path to executable) and brightness can be adjusted by running
/usr/bin/brightnessctl set 100