On Monday, November 07, 2011 03:27:40 PM Matthew Garrett wrote: > On Mon, Nov 07, 2011 at 03:25:13PM +0100, Thomas Renninger wrote: > > On Monday, November 07, 2011 02:59:24 PM Matthew Garrett wrote: > > > On Sat, Nov 05, 2011 at 01:44:03AM +0100, Thomas Renninger wrote: > > > > There are quite some reports that those do not reboot: > > > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/833705 > > > > ->E6520, E6220 > > > > http://www.linux-club.de/viewtopic.php?f=29&t=114459&start=20 > > > > ->E5520 > > > > and some more already are blacklisted > > > > > > It's a bug in the SMM code on these machines, and it goes away if you > > > disable VT-D. Let's try to actually fix it > > How do you intend to fix that? > > From description above it sounds as if this problem is not > > fixable from OS side. > > Tear down VT-D state before reboot. But doing this for all X86 machines because of a handful of Dells with broken SMM code sounds wrong as well. Doesn't Dell ship with Ubuntu pre-loaded? Can't someone point them to this to get this fixed in BIOS? Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
