I'm getting the following messages after I do a shutdown or restart of the system:
[ 787.699442] DMAR: DRHD: handling fault status reg 3 [ 787.699446] DMAR: [INTR-REMAP] Request device [f0:1f.0] fault index 0 [fault reason 37] Blocked a compatibility format interrupt request [ 4536.831850] DMAR: DRHD: handling fault status reg 3 [ 4536.831855] DMAR: [INTR-REMAP] Request device [f0:1f.0] fault index 0 [fault reason 37] Blocked a compatibility format interrupt request
Screenshot: http://imgur.com/EUoFTi6
The system will sit at this screen for about 3-4 minutes and then finally reboot. Startup shows no errors and boots stupid fast, this only happens when the system is either shutting down or rebooting right after the desktop exits.