The Eleventh Circuit has determined that a lawful permanent resident not seeking admission can still trigger the stop-time rule (which stops the accrual of continuous residence required for cancellation of removal) if he is convicted of an offense that renders him inadmissible. In so doing, the court joined the Second, Third, and Fifth Circuits, while diverging from the Ninth Circuit.
The full text of Barton v. Attorney General can be found here:
http://media.ca11.uscourts.gov/opinions/pub/files/201713055.pdf