Re: [Bug 10345] USB HID problems after resume

[Mark Lord]

Pavel Machek wrote:
> On Sun 2008-03-30 13:46:25, Mark Lord wrote:
> > Pavel Machek wrote:
> > > On Sat 2008-03-29 13:15:40, Mark Lord wrote:
> > > ..
> > > > Just happened again.  The machine resumed from RAM with no functioning USB.
> > > > Still running the exact same 2.6.25-rc7 kernel as before, with the RTC conflict fixed.
> > > >
> > > > WTF?
> > > > 3GB of RAM? Try iommu=soft.
> > ..
> >
> > What does that option do (it is not in Documentation/kernel-parameters.txt),
> > and why do you suspect it may make a difference here?
>
> See x86_64/boot-options.txt . Yes, that should be fixed.
>
> I had strange problems, and it looks like iommu does not have proper
> suspend/resume support. > 3GB machines hit that. Do you have one?
..

This is a 32-bit system / kernel, so I'm guessing that this option is not applicable.

Right?  (it does have 3GB of RAM, though).

Cheers
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