On Wed, 21 Mar 2007, Lucas Nussbaum wrote: > On 21/03/07 at 08:41 -0800, Andrew Morton wrote: > > On Wed, 21 Mar 2007 07:18:45 -0700 bugme-daemon@xxxxxxxxxxxxxxxxxxx wrote: > > > > > http://bugzilla.kernel.org/show_bug.cgi?id=8249 > > > > > > Summary: NMI watchdog detected LOCKUP when plugging USB devices > > > with acpi=off > > > Kernel Version: 2.6.21-rc4 > > > Status: NEW > > > Severity: high > > > Owner: greg@xxxxxxxxx > > > Submitter: lucas@xxxxxxxxxxxxxxxxxx > > > > > > > > > Most recent kernel where this bug did *NOT* occur: none, as far as I know > > > Problem Description: > > > > > > My kernel is running with acpi=off to workaround another bug. When I turn on my > > > USB printer (a Canon PIXMA MP750), I get this on the serial console: It looks like your problem occurs either as a result of the USB printer driver's actions or as a result of HAL. You could try turning off the HAL daemon and renaming the usblp.ko file so that it won't get loaded automatically. Then after plugging in the printer you could insmod the renamed driver file by hand, and see whether that causes the oops. Then start HAL by hand and see whether that causes the oops. Alan Stern - 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
