Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754725AbYC3UUT (ORCPT ); Sun, 30 Mar 2008 16:20:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753209AbYC3UUH (ORCPT ); Sun, 30 Mar 2008 16:20:07 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:46660 "EHLO gprs189-60.eurotel.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752971AbYC3UUG (ORCPT ); Sun, 30 Mar 2008 16:20:06 -0400 Date: Sun, 30 Mar 2008 22:20:47 +0200 From: Pavel Machek To: Mark Lord Cc: bugme-daemon@bugzilla.kernel.org, rjw@sisk.pl, bunk@kernel.org, Linux Kernel , linux-usb@vger.kernel.org Subject: Re: [Bug 10345] USB HID problems after resume Message-ID: <20080330202047.GE11839@elf.ucw.cz> References: <20080328223544.A61F711D10C@picon.linux-foundation.org> <47EE78C9.5090006@rtr.ca> <47EE793C.5070105@rtr.ca> <20080330114834.GA6510@elf.ucw.cz> <47EFD1F1.8010501@rtr.ca> <20080330182243.GA11839@elf.ucw.cz> <47EFF4F6.1050302@rtr.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <47EFF4F6.1050302@rtr.ca> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1431 Lines: 37 On Sun 2008-03-30 16:15:50, Mark Lord wrote: > 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). Not 100% sure... I've seen strangeness on 32-bit systems, too. Can you simply pass mem=2G and see what happens? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/