I'm running a Sabayon Linux VM inside of Virtualbox 4.3. I have the guest additions installed, and when I run a desktop environment such as XFCE, I have bidirectional clipboard support (via Control-Shift-C/V in the VM) with my Windows 8 host. Recently, I switched to i3 to try it out, and while I'm enjoying it, I no longer have access to the Windows clipboard. How can I regain access to the Windows clipboard in i3? Note that I am running i3 without a desktop environment.
Assuming you have virtualbox-guest-utils installed you can simply run:
And if you're launching i3 with startx you can add that to your .xinitrc file to automatically enable shared clipboard on i3 exec.
Note: although rsynnest's comment does contain the solution it's slightly confusing / inaccurate hence why I made this comment.
i3 inside a desktop environment of your choice should restore the shared clipboard functionality.
I have i3+gnome running on Arch guest with Windows 7 host.
I haven't yet gotten shared clipboard to work for i3 alone, will update this answer if I figure it out.
EDIT: For Arch linux, after installing virtualbox-guest-utils I can run
/usr/bin/VBoxClient-all and it enables all guest services. For some reason the vboxguest systemd service doesn't work as it does in Gnome, but if I put /usr/bin/VBoxClient-all in my PostLogin GDM file it works!