I am setting up a minimalistic fvwm-session (black screen, some xterms, clock, that’s about it). I figured out how to add nm-applet to stalonetray so that I can select a wireless network. The only other things I need is I think an icon/applet for a power manager. I have xfce4-power-manager running, but I can’t seem to figure out how to add an applet for that to stalonetray.
I’m not married to xfce4-power-manager, any power manager will do.
You could also try something like cbatticon which provides a very basic power management-type option (it will execute a command when the battery reaches a certain level). Note this only works when you’re logged into your Window Manager.
While experimenting with various options, fvwm kept crashing randomly every 5 - 15 minutes. The logs mention a `free() - memory bug’. Yikes.
Instead of trying to get to the bottom of that, I decided to switch to XFCE. I spent a few hours stripping all the unnecessary XFCE-things out of it, and am pretty close to the fvwm-configuration I’ve been using for 15 years. (With xfce-power-manager in the minimalistic tray this time.)