Connecting to byobu in Ubuntu 12.04.1 (precise) from PuTTY on a Windows 7 system, when I type Shift+F2 to get a vertical split, nothing happens. Typing plain F2 works and opens a new window.
I tried all the terminal keyboard types in PuTTY configuration (ex. XTerm R2, Linux) without any luck. Any ideas? Is there nay another keyboard shortcut to do the same thing?