LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Pavel Machek <pavel@ucw.cz>
To: Mark Lord <lkml@rtr.ca>
Cc: bugme-daemon@bugzilla.kernel.org, rjw@sisk.pl, bunk@kernel.org,
	Linux Kernel <linux-kernel@vger.kernel.org>,
	linux-usb@vger.kernel.org
Subject: Re: [Bug 10345] USB HID problems after resume
Date: Sun, 30 Mar 2008 20:22:43 +0200	[thread overview]
Message-ID: <20080330182243.GA11839@elf.ucw.cz> (raw)
In-Reply-To: <47EFD1F1.8010501@rtr.ca>

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

  reply	other threads:[~2008-03-30 18:22 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20080328223544.A61F711D10C@picon.linux-foundation.org>
     [not found] ` <47EE78C9.5090006@rtr.ca>
2008-03-29 17:15   ` Mark Lord
2008-03-29 22:02     ` Alan Stern
2008-03-30  9:30     ` Oliver Neukum
2008-03-30 11:48     ` Pavel Machek
2008-03-30 17:46       ` Mark Lord
2008-03-30 18:22         ` Pavel Machek [this message]
2008-03-30 20:15           ` Mark Lord
2008-03-30 20:20             ` Pavel Machek
2008-03-30 20:22               ` Mark Lord

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20080330182243.GA11839@elf.ucw.cz \
    --to=pavel@ucw.cz \
    --cc=bugme-daemon@bugzilla.kernel.org \
    --cc=bunk@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=lkml@rtr.ca \
    --cc=rjw@sisk.pl \
    --subject='Re: [Bug 10345] USB HID problems after resume' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).