Added Powermanagement page and updated zram page

docs/alpine-desktop-setup/post-install/power-management.md

@@ -0,0 +1,21 @@
+# Power management
+
+## Acpi
+
+During installation Busybox's `acpid` has already been replaced by the regular `acpid` which means that it has to be configured in `/etc/acpi/handler.sh`. The default configuration works but by default will not suspend the device if an AC adapter is connected even if the lid is closed. Therefore it's recommended in `button/lid:*:close:*` to change it to:
+
+```
+#power-supply-ac || suspend
+suspend
+```
+
+## TLP
+
+To optimise battery on the device it's recommend to install `tlp` and activate it's service:
+
+```
+# apk add tlp
+# rc-update add tlp default
+```
+
+`tlp` can be configured in `/etc/tlp.d` but the default configuration already works.

docs/alpine-desktop-setup/post-install/zram.md

@@ -9,6 +9,17 @@ Install it with:
 # rc-update add zram-init default
 ```
 
-Now reboot the computer or restart the service to check if it works.
+`zram-init` can be configured in `/etc/conf.d/zram-init`. The amount of devices and the size of zram can be changed here, for example:
+
+```
+num_devices=1
+
+# swap - 500M
+
+#size0=512
+size0=`LC_ALL=C free -m | awk '/^mem:/{print int($2/4)}'`
+```
+
+Now the size of the swap device will be a fourth of the ram size. Reboot the computer or restart the service to check if it works.
 
 Also be sure to read the [ArchWiki](https://wiki.archlinux.org/title/Zram) for more information.