Ubuntu 24.04+LightDMでsuspendするのを無効にする

Ubuntu 24.04+LightDMのシステムをサーバとして使っているときに勝手にsuspendしてしまう現象

リモートデスクトップ/SSHのみで使用している場合、"inactive"として認識して30分後にsuspendをトリガーする

code:sh

# Disable sleep timeout for lightdm (gnome-settings-daemon)

sudo -u lightdm dbus-launch gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout 0

sudo -u lightdm dbus-launch gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-battery-timeout 0

sudo -u lightdm dbus-launch gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type 'nothing'

sudo -u lightdm dbus-launch gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-battery-type 'nothing'

# Disable sleep timeout for unity-greeter

sudo -u lightdm dbus-launch gsettings set com.canonical.unity.settings-daemon.plugins.power sleep-inactive-ac-timeout 0

sudo -u lightdm dbus-launch gsettings set com.canonical.unity.settings-daemon.plugins.power sleep-inactive-battery-timeout 0

sudo -u lightdm dbus-launch gsettings set com.canonical.unity.settings-daemon.plugins.power sleep-inactive-ac-type 'nothing'

sudo -u lightdm dbus-launch gsettings set com.canonical.unity.settings-daemon.plugins.power sleep-inactive-battery-type 'nothing'

# Verify settings. Should show 0 and nothing.

sudo -u lightdm dbus-launch gsettings get org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout

sudo -u lightdm dbus-launch gsettings get com.canonical.unity.settings-daemon.plugins.power sleep-inactive-ac-type

上記でダメだったので以下を追加：

code:sh

sudo mkdir -p /etc/systemd/logind.conf.d

sudo vim /etc/systemd/logind.conf.d/no-suspend.conf

code:toml

HandleSuspendKey=ignore

HandleHibernateKey=ignore

HandleLidSwitch=ignore

HandleLidSwitchExternalPower=ignore

HandleLidSwitchDocked=ignore

IdleAction=ignore