Comment # 38 on bug 1184575 from Takashi Iwai

(In reply to Bill Wayson from comment #37)
> (In reply to Takashi Iwai from comment #35)
> > For the people who can boot with intel_iommu=off boot option, please go to
> > bug 1184585.  The culprit was identified and the test fix kernel is being
> > built there.
> > 
> > If your machine doesn't boot with intel_iommu=off boot option, this must be
> > a different bug, and we'd like to see whether other options make boot
> > forward (even if not fully functional).  If that's the case, please speak up.
> 
> I'm with this bug.  The intel_iommu=off boot option does not help me.

IIUC, it's your laptop (while the desktop is working), and the boot hangs at
some while after some boot process, right?  Then it must be the influence by
acpi=off option.  Try to drop this and retest.  In that way, check which one
makes booting at best by removing one by one.

The options quiet and splash=silent can be dropped for the whole testing.  It's
about the boot splash, hence likely irrelevant.  Check whether intel_iommu=off
really doesn't give any difference on the laptop, too.