I just figure out today how to get what I believe is a full unity
session up and running in a valgrind X:

1. Log out, we're going to stop the current X session.
2. Switch to a VT (ctrl+alt+fn2)
3. Log in
4. $ sudo stop lightdm
5. $ sudo valgrind Xorg :0 2>&1 | tee /tmp/log
6. Switch to another VT (ctrl+alt+fn3) and login (or use a different screen 
window if you are running screen)
7. $ DISPLAY=:0 dbus-launch unity

Make sure there are no user dbus daemons running before running dbus-
launch. That seemed to mess things up. Also, the desktop is going to run
*REALLY* *REALLY* slow and might take multiple minutes just to start. It
may also have all kinds of visual artifacts. Hopefully you can get
around them to reproduce the issue. Once you have, attach /tmp/log here.

Thanks!

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/943880

Title:
  Xorg crashed with SIGABRT in __libc_message() from malloc_printerr()
  via XIDestroyDeviceProperty

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/943880/+subscriptions

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