diff --git a/src/articles/linux_internals.md b/src/articles/linux_internals.md
index e5929c0..a84353b 100644
--- a/src/articles/linux_internals.md
+++ b/src/articles/linux_internals.md
@@ -97,6 +97,10 @@ Important libraries:
 * `libnotify`
 * `libudev`
 
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+
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 ## Devices ##
 
 Devices are managed in user space with the `udev` utility - which has the following parts:
@@ -120,21 +124,6 @@ Display servers can react to device input events via the `libinput` library, whi
 
 The Desktop-Bus (DBus) is a user space middleware allowing communication between multiple processes (e.g. IPC).
 
-## Audio ##
-
-ALSA (Advanced Linux Sounds Architecture) - has both kernel and user-space elements, the later with alsa-lib.
-
-
-Pipewire is a new low-level multimedia framework.
-
-## Power Managemenr ##
-
-UPower (previously DeviceKit-power) is a power manement middleware - it spawns `upowerd`.
-
-Systemd has some session and power management through its logind. The elogind is a standalone fork of this logind.
-
-The `systemctl suspend` analogue for elogind is `loginctl suspend`.
-
 ## Other ##
 
 * avahi