extend documentation

system-installation/003-system-configuration.qd

@@ -306,6 +306,21 @@ Create the file `/etc/cmdline.d/03-resume.conf` with the following content
 resume=/dev/vgsys/lvswap
 ```
 
+On some systems, the kernel will default to s2sleep when displays are turned of or when the laptop goes to suspend.
+Unfortunately, some devices have trouble waking up from this. The fix is to switch from s2sleep to deep sleep.
+
+Create `/etC/cmdline.d/04-sleep.conf` with the following content
+
+```ini
+mem_sleep_default=deep
+```
+
+On some systems, deep sleep needs to be activated in the Bios
+
+- Disable `Modern Standby`
+- Disable `S0 Low Power Idle`
+- Enable `Deep Sleep`
+
 ## Enable Unified Kernel Image Booting
 
 UKI creates a single executable that can be directly booted from the UEFI firmware without any bootloader.

system-installation/004-graphical-environment.qd

@@ -123,7 +123,7 @@ You can now start hyprland with `uwsm start hyprland.desktop`.
 
 ## Automatic Configuration
 
-A lot of the paage installation and configuration in the `$HOME` and `$HOME/.config` folders can be automated
+A lot of the package installation and configuration in the `$HOME` and `$HOME/.config` folders can be automated
 with `chezmoi`.
 
 1. Make sure that `chezmoi` is installed on the system with `pacman -S chezmoi`.
@@ -154,6 +154,27 @@ ExecStart=-/sbin/agetty -o '-p -f -- \\u' --noclear --autologin <username> %I $T
 After the automatic login of the user, Hyprland will be started on TTY1 by the `uwsm` commands
 in the `~/.bash_profile` file. On other TTYs, Hyprland will not be started automatically.
 
+## Prevent Action When Laptop Lid is Closed
+
+In some situations it might be useful to prevent all actions when the laptop lid is closed (or is being closed).
+Usually systemd will go to sleep mode when the lid is closed on no other idle inhibitors are present (e.g. keyboards,
+external monitors etc.).
+
+If this works correctly it is fine, but it is buggy on some systems. If you notice symptoms like these
+
+- The laptop goes into sleep immediately after booting and before the dock and external monitors are online
+- The laptop goes into sleep when monitors turn off (e.g. due to dpms)
+- The laptop goes into sleep although it is connected to a dock (dock detection is not reliable)
+
+You can disdable the auto-suspend in `/etc/systemd/logind.conf`
+
+```ini
+[Login]
+HandleLidSwitch=ignore
+HandleLidSwitchExternalPower=ignore
+HandleLidSwitchDocked=ignore
+```
+
 ## Create Default User Directories
 
 Execute the command `xdg-user-dirs-update` to create or update the default user directories.