KDE and awesome
Option 1: .desktop files
Place the following in $(KDE prefix)/ksmserver/windowmanagers/awesome.desktop (the folder will probably contain openbox.desktop or metacity.desktop as well).
Note: on KDE3, $(KDE Prefix) usually is /usr/share/apps/.
Note: on KDE4, $(KDE Prefix) usually is /usr/share/kde4/apps/.
Note: on KDE Frameworks 5, $(KDE Prefix) usually is /usr/share/.
[Desktop Entry] Encoding=UTF-8 Name=Awesome Comment=Highly configurable framework window manager Type=XSession Exec=awesome TryExec=awesome
Now, you should be able to choose "awesome" as window manager in System Settings->Default Applications->Window Manager
Option 2: Environment variables
KDE has the KDEWM environment variable that allows you to specify an alternative window manager to use. Just create a new script called something like:
and make it executable chmod +x ~/.kde/env/set_window_manager.sh
Note: on KDE Frameworks 5 that variable is read from the environment, so just put it at the end of your .profile, .bash_profile or whatever.
I made a script in /etc/X11/Xsession.d/98mine containing just:
But this is not recommended since it sets this variable for all users of the system (which is only me on my laptop).
I made some screenshots.
Copy /usr/share/autostart/plasma-desktop.desktop to ~/.config/autostart/ and add Hidden=true at the end.
Note: on Plasma 5 that is /etc/xdg/autostart/plasmashell.desktop.
Copy /usr/share/autostart/krunner.desktop to ~/.config/autostart/ and add Hidden=true at the end.
Note: on Plasma 5 that is located in /etc/xdg/autostart/.
Tray icons of some KDE applications won't show up in awesome's systray because they use the KDE status notifier. If you disable this service (System Settings > Startup and Shutdown > Service Manager > uncheck "Status Notifier Manager") all the icons should appear. Tip taken from Tint2 Wiki.
Note: on Plasma 5 also take a look to http://blog.martin-graesslin.com/blog/2014/06/where-are-my-systray-icons/
Logout / Shutdown / Lock
Install kshutdown, also available as package in many distribution.