Elogind

2025-07-31T00:06:43Z

Hollyburn: /* Troubleshooting */ mention that util-linux-login might be needed for a session to be created

{{DISPLAYTITLE:elogind}}[https://github.com/elogind/elogind '''elogind'''] is extracted out of "logind" - systemd login manager to be a standalone daemon and provides [[Seat manager]] support by setting up necessary permissions for the desktop environment or window manager and handles poweroff, reboot, suspend and hibernate via '''loginctl''' commands.

== Prerequisites ==

* Install and configure [[Polkit#Using polkit with elogind|Polkit]] as it is used for authentication by elogind.

== Installation ==

{{Cmd|<nowiki># apk add elogind
# rc-update add elogind
# rc-service elogind start</nowiki>}}

== Configuration ==

=== Hibernation ===

The command to trigger hibernation is: {{Cmd|# loginctl hibernate}}

For hibernation to work, you must have a swap partition. Check {{Cmd|# lsblk}} for a partition with the mountpoint [SWAP].

<pre>
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]
</pre>

Remember also to add a kernel parameter to resume, ie in {{Path|/etc/default/grub}} :

{{Cat|/etc/default/grub|<nowiki>...
GRUB_CMDLINE_LINUX_DEFAULT="modules=sd-mod,usb-storage,ext4,nvme quiet rootfstype=ext4 resume=/dev/nvme0n1p4"
</nowiki>}}

Note the "resume=" flag with the same partition that was marked as [SWAP].

The resume process can be speed up reducing the size of the hibernation images. See the documentation for [https://docs.kernel.org/admin-guide/pm/sleep-states.html?highlight=image_size#basic-sysfs-interfaces-for-system-suspend-and-hibernation image_size] in the kernel docs for the details, but writing 0 to {{Path|/sys/power/image_size}} should make the images as small as possible.

=== Power management ===

Edit the systemwide config file {{Path|/etc/elogind/logind.conf}} to configure handling of [[Power_management#elogind_and_power_management|power events]], such as suspending the computer when power button is pressed:

{{cat|/etc/elogind/logind.conf|...
[Login]
HandlePowerKey{{=}}suspend
...}}

Since <Code>loginctl</Code> requires privilege escalation, allow either the user to be part of wheel group or configure doas to allow running it as an unprivileged user.

Option1:
# optionally, allow $USER root access with password
adduser $USER wheel

Option2:

[[Setting_up_a_new_user#doas|Doas]] is used to grant permissions for suspend-to-RAM. In the doas config file {{Path|/etc/doas.conf}}, set
permit nopass $USER as root cmd /bin/loginctl

After setting the above, suspend-to-RAM can be triggered by running {{Cmd|$ /bin/loginctl suspend}}

== Troubleshooting ==

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 <code>loginctl</code> command should output the following when using Sway with [[SDDM]]'':

<p style="background-color:#f9f9f9; border:1px dashed #2f6fab; line-height:1.1em; padding:1em; font-family:monospace; font-size:10pt; white-space:pre; overflow:auto;"><span style="color:green;">~</span>'''$''' loginctl

SESSION UID USER SEAT TTY
c1 105 sddm seat0
c2 1000 User seat0 tty8

2 sessions listed.
</p>

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|display manager]]. It may also be necessary to install <code>util-linux-login</code> to enable the use of the elogind PAM module.

== See also ==

* [https://wiki.gentoo.org/wiki/Elogind elogind - Gentoo Wiki]
* [https://wiki.gentoo.org/wiki/Polkit polkit - Gentoo Wiki]
* [https://wiki.archlinux.org/title/Polkit polkit - ArchWiki]

[[Category:Seat_manager]]

Gaming on Alpine

2024-12-21T20:10:58Z

Hollyburn: Update note on 32-bit apps on 64-bit wine

It is possible to game on Alpine Linux.

== Installing Games ==

Like with installing any other package, run the following:

{{Cmd|# apk add [game]}}

Where <code>[game]</code> is the name of the package containing the game, like <code>micro-tetris</code>.

== Steam ==
{{Main|Steam}}

== Wine ==

{{Pkg|wine}} allows you to run some Windows software, including games, under Linux. A 32-bit Alpine chroot/multiboot might be required to use 32 bit Windows games under Wine. If you use x86_64, 32-bit applications will run in Wine's experimental WoW64 mode, which may not be compatible with all software.

To run windows app/games inside a [https://www.reddit.com/r/linux4noobs/comments/1fegh0i/winealpine/ docker container] with alpine Linux, {{pkg|libcap}} is required to fix issues related to [https://gitlab.winehq.org/wine/wine/-/wikis/FAQ#failed-to-use-icmp-network-ping-this-requires-special-permissions raw sockets]

<Pre>
RUN apk add --no-cache libcap
RUN setcap cap_net_raw+epi /usr/bin/wine-preloader
</Pre>

== Permissions ==

To make sure your account is in the "games" group, run the following:

{{Cmd|# adduser youruser games}}

Log-off and then log back on in order for the changes to take effect. Most games don't require this in order to work.

== List of games ==

Below is the list of games packages available in Alpine Linux:

* [https://www.advancemame.it/ AdvanceMAME] ({{Pkg|advancemame}}) - Arcade simulator.
* [https://wiki.gnome.org/Apps/Aisleriot Aisleriot] ({{Pkg|aisleriot}}) - Solitaire card games.
* [https://www.dosbox.com/ DOSBox] ({{Pkg|dosbox}}) - DOS-emulator that uses SDL.
* [https://frotz.sourceforge.net/ Frotz] ({{Pkg|frotz}}) - Z machine (Infocom interactive fiction) Interpreter.
* [https://home.flightgear.org FlightGear] ({{Pkg|flightgear}}) - Flight simulator.
* [https://freedoom.github.io/ Freedoom]+[https://www.chocolate-doom.org/ Chocolate Doom] - ({{Pkg|freedoom}}, {{Pkg|chocolate-doom}}) -- a free Doom game and an engine to run it. For a more modern game engine resembling modern FPSes compatible with Doom WADs, try [https://zdoom.org GZDoom] - {{Pkg|gzdoom}} (or the legacy version {{Pkg|lzdoom}}).
* [https://en.wikipedia.org/wiki/GNU_Chess GNU Chess] ({{Pkg|gnuchess}}) - Play chess against the computer.
* [https://lgames.sourceforge.io/LBreakout2 LBreakout2] ({{Pkg|lbreakout2}}) - Ball-and-paddle game.
* [https://lgames.sourceforge.io/LBreakoutHD LBreakoutHD] ({{Pkg|lbreakouthd}}) - The successor to LBreakout2. Note: no level editor available. lbreakout2 is needed for level creation.
* [https://lgames.sourceforge.io/LPairs LPairs] ({{Pkg|lpairs2}}) - Classical memory game.
* [https://github.com/troglobit/tetris Micro Tetris] ({{Pkg|micro-tetris}}) - A version of Tetris that uses ANSI escape sequences and can fit in embedded devices.
* [https://www.minetest.net/ Minetest] ({{Pkg|minetest}}) - An inspired Minecraft game.
* [https://www.nethack.org NetHack] - Rogue-like dungeon crawler.
* [https://openrct2.org/ OpenRCT2] - A free and open-source reimplementation of RollerCoaster Tycoon 2 but '''requires original RollerCoaster Tycoon 2 assets'''.
* [https://en.wikipedia.org/wiki/OpenTTD OpenTTD] ({{Pkg|openttd}}) - A business simulation game.
* [https://www.retroarch.com RetroArch] ({{Pkg|retroarch}}) - Frontend for emulators, game engines, and media players using libretro.
* [https://www.supertux.org/ SuperTux] ({{Pkg|supertux}}) - Classic 2D jump'n'run side-scroller game in a style similar to the original Super Mario games.
* [https://supertuxkart.net/Main_Page SuperTuxKart] - Kart racing game with OSS mascots.
* [https://www.xonotic.org/ Xonotic] ({{Pkg|xonotic}}) - A free and open-source FPS.

== See Also ==
* [[Steam|Steam on Alpine Linux]]
* [https://gitlab.winehq.org/wine/wine/-/wikis/FAQ Wine FAQ]
* [https://obsproject.com/ OBS Studio] ({{Pkg|obs-studio}}) - Used by live streamers on streaming platforms such as YouTube and Twitch.
* [https://wine.htmlvalidator.com/install-wine-on-alpine-linux-3.html How to Install Wine on Alpine Linux 3]
[[category:Gaming]]

Alpine Linux - User contributions [en]

Elogind

Gaming on Alpine