Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751790AbZKAIzu (ORCPT ); Sun, 1 Nov 2009 03:55:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751614AbZKAIzt (ORCPT ); Sun, 1 Nov 2009 03:55:49 -0500 Received: from lucidpixels.com ([75.144.35.66]:55516 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751564AbZKAIzs (ORCPT ); Sun, 1 Nov 2009 03:55:48 -0500 Date: Sun, 1 Nov 2009 03:55:53 -0500 (EST) From: Justin Piszcz To: Arjan van de Ven cc: Alan Stern , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, nut-upsuser@lists.alioth.debian.org, bruce.w.allan@intel.com, Alan Piszcz Subject: Re: 2.6.31.4: Intel P55 Chipset BUG [usbhid-raw/devices/broken?] [tested 3 different UPS'] In-Reply-To: <20091031170749.4c2470ff@infradead.org> Message-ID: References: <20091031170749.4c2470ff@infradead.org> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1499 Lines: 48 On Sat, 31 Oct 2009, Arjan van de Ven wrote: > On Sat, 31 Oct 2009 19:43:38 -0400 (EDT) > Justin Piszcz wrote: >>>> Problem appears to be the Intel P55KG / USB Chipset in the way >>>> that it handles usbhid-raw devices as CD/USB sticks/kbd/mouse/etc >>>> do not appear to be affected. >>>> >>>> So far all other USB devices work fine, with the exception of >>>> UPS', I have tested two APC 1500VA (one an RS the other an XS), in >>>> addition I also have a 'BELKIN 1200VA UPS with AVR' from a long >>>> time ago, the same problem occurs. >>> >>> ... >>> >>>> A bit frustrated, I popped in a PCI card with 4 external USBs, and >>>> now no more errors: > > > just as a wild guess; > does it go away if you disable CONFIG_USB_SUSPEND ? > > also, google suggests that your bios may not have c-states enabled; > if so, enabling those in the bios might also be a good idea Hi Arjan, Thanks for the reply, http://home.comcast.net/~jpiszcz/20091101/config-2.6.31.4-7-PROD.txt http://home.comcast.net/~jpiszcz/20091101/config-2.6.31.4-8-USB-DEBUG.txt I do not use that option btw: $ grep CONFIG_USB_SUSPEND .config # CONFIG_USB_SUSPEND is not set I rebooted to the BIOS and verified that the CPU C states are enabled. Justin. -- 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/