DO classic popup only show on Default Display

You should be able to set the target monitor by starting Do from the terminal and prepending "DISPLAY=:0.x", with x being the index of your monitor starting with 0.

E.g. "DISPLAY=:0.1 gnome-do"

I dont want it stuck on only one display.
I need it to appear where my mouse and keyboard interaction are happening.

I'm currently testing having one dock on every X screen and it seems to work perfectly fine so far. You have to remove the instance check and compile the code yourself at the moment. Hopefully, there will be a command line parameter to skip the check for multiple instances soon.

It's "Services.System.EnsureSingleApplicationInstance ()" in "Do.cs"

RomD's advice does not reflect the view of any GNOME Do developer. If you
remove this check we cannot support any horrendous problems that you may
have, like your entire dbus system bus crashing, killing your dog, and
eating all of your cereal. Seriously, don't do this.

--
--Alex Launi

 affects ubuntu/gnome-do
 status incomplete
 affects do
 status incomplete

I believe this should have been fixed by the recent upload of gnome-do
0.8.1(.3). This was a regression from 0.6. Can you confirm that it now
works as expected?

$ apt-cache policy gnome-do
gnome-do:
  Installed: 0.8.1.3-0ubuntu1
  Candidate: 0.8.1.3-0ubuntu1
  Version table:
 *** 0.8.1.3-0ubuntu1 0
        500 ftp://darkstar.ist.utl.pt jaunty/universe Packages
        500 ftp://archive.ubuntu.com jaunty/universe Packages
        100 /var/lib/dpkg/status

I'm still seeing this only on the external display

Still no problems at all with three docks on three X screens so far.
No dbus, cereals or dogs were harmed in this experiment.

Is it possible to use same checks what notfy-osd use. On my system with Nvidia Twinview it come on the activ sacreen.

I use the xdotool with the following script to simulate super+space in screen 0:

# find root in screen 0
xdotool search --maxdepth 0 --screen 0 "" windowfocus || exit 1

# pause, otherwise keys would be lost!
sleep 0.25

# send super+space
xdotool key --clearmodifiers super+space

Status changed to 'Confirmed' because the bug affects multiple users.