Messages in this thread | | | Date | Sun, 30 Mar 2008 20:22:43 +0200 | From | Pavel Machek <> | Subject | Re: [Bug 10345] USB HID problems after resume |
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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?
Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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