Keyboard commands

Lubuntu Support
1

Is there a list of keyboard commands for lubuntu. for example one to reset the box?

2

You haven’t said which release, but have you looked up the manual -

https://manual.lubuntu.me/stable/F/keyboard_shortcuts.html

(it assumes the latest stable release, ie. Lubuntu 19.10)

I’m not sure what you mean by “reset the box”, a kernel SysRq key comes to mind, but that’s not Lubuntu specific.

3

I am running 19.10 but I don’t see a system reboot key sequence ?

4

Lubuntu doesn’t have a system reboot keyboard sequence. The keystrokes (sysrq) to which I referred was a linux kernel keystroke combination that allows the user to communicate commands directly to the Linux kernel (unless disabled).

Everyone has their favorite reference for it, if you don’t remember them I usually type “magic sysrq” keys into a search engine (on another box, phone etc) and the wikipedia entry Magic SysRq key - Wikipedia comes up near or at the top.

You can scroll down that entry for my most common use REISUB

  • un R aw (take control of keyboard back from X),
  • t E rminate (send SIGTERM to all processes, allowing them to terminate gracefully),
  • k I ll (send SIGKILL to all processes except init, forcing them to terminate immediately),
  • S ync (flush data to disk),
  • U nmount (remount all filesystems read-only),
  • re B oot.

ie. ALT + SYSRQ then holding down the ALT key you hit the REISUB keys one at a time. It tells the kernel to cleanly reboot the machine, which if X or the box appears locked - is proof that the kernel is still running normally (as it could respond) providing clues for system state & re-gaining control.

That however is not a Lubuntu command, it’s a Linux kernel keystroke command, which applies to anything running linux except as stated before, if it’s disabled by configuration.

I can’t test it on my android phone because I don’t have those keys, though I’d expect the phone maker to have disabled it.

If I wanted Lubuntu to shutdown via keyboard, I’d likely use

    <Super> 
    <Up><Up><UP>
    <Right>
    <Up><Up><UP>
    <Enter>

which navigates to Leave and then selects reboot on my Lubuntu 20.04 box. That lets LXQt or Lubuntu perform the reboot rather than forcing the kernel to reboot the machine.

6

You can add your own custom keyboard shortcut.

man 1 lxqt-leave shows you, which options are available.

As an example, you can add a new shortcut, such as CTRL+ALT+R, and set the command to

lxqt-leave --reboot
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