[Bug 31983] Re: Kernel security update renders system unbootable

[Matt Zimmerman]

No one else has been able to reproduce this problem, so there is something about it which is specific to your system.  That is why it is unconfirmed: we don't yet know whether there is a bug or where it might lie.

If you can try to confirm this with a fresh install, that would help us very much.
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Kernel security update renders system unbootable
https://launchpad.net/malone/bugs/31983