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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?

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This isn't an ubuntu issue. Windows is likely capturing the key-combination and not sending it. Try to look at Windows / Putty documentation to see (a) how to stop Windows / putty from capturing the key-combination. Alternatively, there may be menu item to send the shift modifier in putty or look into remapping the key via input.rc (…) or byobu itself (…) –  computermacgyver Sep 6 '12 at 2:35

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