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[Jonathan Brier <1170418@xxxxxxxxxxxxxxxxxx>]

Per an IRC recommendation: I was told to run a backtrace on compiz and
try downgrading to mesa 9.0.3.

I have yet to understand the downgrade path - I have yet to test 9.0.3
after the 9.1 upgrade and 3 screen issue began.  9.0.3 worked fine
before 9.1 became the latest package.

I attempted a backtrace of compiz using the instructions
(https://wiki.ubuntu.com/DebuggingCompiz), but I am not sure if it was
successful.  I added the debug symbols for packages currently used by my
system.  After launching gdb and setting the logging on and "run" all
screens only display the background and cursor.  I did not get to run
"thread apply all bt full" or "set logging off" commands as the terminal
disappeared.  I did type these command incase the commands would run,
but not sure if the output is what is expected from a backtrace.

See the attached "compiz backtrace"

** Attachment added: "compiz backtrace"
   https://bugs.launchpad.net/unity/+bug/1170418/+attachment/3659241/+files/compiz-crash.txt

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https://bugs.launchpad.net/bugs/1170418

Title:
  Unity Launcher and window borders missing upon login when using 3
  monitors

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