byobu cheatsheet (from F9 -> quick start guide) - http://askubuntu.com/questions/661940/i-just-dont-get-byobus-keybindings-systems-or

byobu_cheatsheet

Byobu is a suite of enhancements to tmux, as a command line
tool providing live system status, dynamic window management,
and some convenient keybindings:

  F1                             * Used by X11 *
    Shift-F1                     Display this help
  F2                             Create a new window
    Shift-F2                     Create a horizontal split
    Ctrl-F2                      Create a vertical split
    Ctrl-Shift-F2                Create a new session
  F3/F4                          Move focus among windows
    Alt-Left/Right               Move focus among windows
    Alt-Up/Down                  Move focus among sessions
    Shift-Left/Right/Up/Down     Move focus among splits
    Shift-F3/F4                  Move focus among splits
    Ctrl-F3/F4                   Move a split
    Ctrl-Shift-F3/F4             Move a window
    Shift-Alt-Left/Right/Up/Down Resize a split
  F5                             Reload profile, refresh status
    Alt-F5                       Toggle UTF-8 support, refresh status
    Shift-F5                     Toggle through status lines
    Ctrl-F5                      Reconnect ssh/gpg/dbus sockets
    Ctrl-Shift-F5                Change status bar's color randomly
  F6                             Detach session and then logout
    Shift-F6                     Detach session and do not logout
    Alt-F6                       Detach all clients but yourself
    Ctrl-F6                      Kill split in focus
  F7                             Enter scrollback history
    Alt-PageUp/PageDown          Enter and move through scrollback
    Shift-F7                     Save history to $BYOBU_RUN_DIR/printscreen
  F8                             Rename the current window
    Ctrl-F8                      Rename the current session
    Shift-F8                     Toggle through split arrangements
    Alt-Shift-F8                 Restore a split-pane layout
    Ctrl-Shift-F8                Save the current split-pane layout
  F9                             Launch byobu-config window
    Ctrl-F9                      Enter command and run in all windows
    Shift-F9                     Enter command and run in all splits
    Alt-F9                       Toggle sending keyboard input to all splits
  F10                            * Used by X11 *
  F11                            * Used by X11 *
    Alt-F11                      Expand split to a full window
    Shift-F11                    Zoom into a split, zoom out of a split
    Ctrl-F11                     Join window into a vertical split
  F12                            Escape sequence
    Shift-F12                    Toggle on/off Byobu's keybindings
    Alt-F12                      Toggle on/off Byobu's mouse support
    Ctrl-Shift-F12               Mondrian squares
    
/usr/share/doc/byobu/help.tmux.txt (END)

official site:
http://byobu.co

10 min video tutorial:
http://people.canonical.com/~kirkland/byobu.mp4

http://people.canonical.com/~kirkland/byobu.mp4 does not work (anymore)

@toaomatis video is available here: https://www.youtube.com/watch?v=NawuGmcvKus

Ref: http://byobu.co/

I usually have two nested byobu sessions, then I don't know how to send FX key commands to the second sessions. I tried with ctrl+a+a and the FX key but it doesn't work, any idea? thanks.

How do disable the function keys in the current session?

To quit (exit) Scrollback mode after pressing F7, try the following:

• ESC
• q
• Ctrl-c
• ENTER

I usually have two nested byobu sessions, then I don't know how to send FX key commands to the second sessions. I tried with ctrl+a+a and the FX key but it doesn't work, any idea? thanks.

Try maybe with Shift-F12 to turn off the byobu in focus' keybindings ?
I suppose then the underlying byobu would receive them ?

If I end up in a nested session, for example a local byobu-session and one in an ssh session, I open a new ssh-session and do a byobu detach (either by firing up byobu and pressing Ctrl-a D or running byobu -d)

these keybindings are no longer working for me, doesn't matter if backend is tmux or screen, using debian stretch from a macbook

these do work for me

F7 to enter scrollback
Ctrl+U and Ctrl+D (half page up and down)
Ctrl+B and Ctrl+F (full page up and down)

I almost always have to rely on Ctrl-a + [?] commands, as I don't seem to be able to use the function key shortcuts. Is there a list anywhere showing how to execute these commands using Ctrl-a rather than function keys?