Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754555AbZLCQUy (ORCPT ); Thu, 3 Dec 2009 11:20:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753806AbZLCQUy (ORCPT ); Thu, 3 Dec 2009 11:20:54 -0500 Received: from mail-yx0-f187.google.com ([209.85.210.187]:46225 "EHLO mail-yx0-f187.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752001AbZLCQUx (ORCPT ); Thu, 3 Dec 2009 11:20:53 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=M4rsMfnFMtYmXYSJ/6YVEIbbhwN07nGPpS0RGuKVi5VxPFyQVseU0xb6Hss8x/TQBR 6GKISOpOMbWOkNbdHaVZXbOzrACDb2IfgCoXrgoAZcXQYyQR2ZS3giZDuZ5xbNh8NKGT OCcTPlJDDF/jPw3vf3ms9iho2JVaQjs3mUtEc= Message-ID: <4B17E56C.9060609@gmail.com> Date: Thu, 03 Dec 2009 08:21:00 -0800 From: "Justin P. Mattock" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091114 Lightning/1.0pre Thunderbird/3.0b4 MIME-Version: 1.0 To: Alan Stern CC: Oliver Neukum , Robert Hancock , Linux-usb , Linux Kernel Mailing List Subject: Re: root hub lost power or was reset References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1576 Lines: 50 On 12/03/09 07:16, Alan Stern wrote: > On Thu, 3 Dec 2009, Oliver Neukum wrote: > >> Am Donnerstag, 3. Dezember 2009 01:58:46 schrieb Justin P. Mattock: >>>>> Now looking at dmesg I see: >>>>> >>>>> [ 413.551845] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) >>>>> -> IRQ 23 >>>>> [ 413.551855] uhci_hcd 0000:00:1d.0: setting latency timer to 64 >>>>> [ 413.551887] usb usb2: root hub lost power or was reset >>>> >>>> Is that unexpected? It seems reasonable to me.. >>> >>> honestly I can't remember seeing this or not. >>> if this is normal then I'll leave it as is. >> >> This happens if your system cuts power to USB during S2. > > It also happens if the system retains power but resets the controller > while resuming (as indicated by the log message: "lost power or was > reset".) Again, it's a BIOS thing. > > And it seems to be very widespread. I haven't seen more than a handful > of systems which _don't_ cut power or reset their UHCI controllers > during S3 sleep. > > Alan Stern > > Thanks for all the info on this. Well, s2ram works ended up being isight_firmware for some reason or another. As for the reset it is a macbook, so if theres something wrong with the bios, then this makes sense (something with efi); In any case everything else seems o.k. Thanks again for the info. Justin P. Mattock -- 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/