"I narrowed it down to libclutter-1.0-0_1.2.4-0ubuntu1 I think (and perhaps libclutter-gtk-0.10-0_0.10.4-0ubuntu1). On a fully upgraded system, downgrading to libclutter-1.0-0_1.0.6-0ubuntu1 (and libclutter-gtk-0.10-0_0.10.2-0ubuntu2, else quadrapassel won't start) is enough to make the X crash go away.
Or, start a live session (lucid beta-1), and upgrade only the libclutter-1.0-0 package to see X crash when closing quadrapassel (the crash happens about 1 in 3 tries on my system)."
From happyhamster in a duped bug report: /bugs.edge. launchpad. net/ubuntu/ +source/ xorg-server/ +bug/549576/ comments/ 6
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"I narrowed it down to libclutter- 1.0-0_1. 2.4-0ubuntu1 I think (and perhaps libclutter- gtk-0.10- 0_0.10. 4-0ubuntu1) . On a fully upgraded system, downgrading to libclutter- 1.0-0_1. 0.6-0ubuntu1 (and libclutter- gtk-0.10- 0_0.10. 2-0ubuntu2, else quadrapassel won't start) is enough to make the X crash go away.
Or, start a live session (lucid beta-1), and upgrade only the libclutter-1.0-0 package to see X crash when closing quadrapassel (the crash happens about 1 in 3 tries on my system)."