linux-kernel - Re: 2.6.31.4: Intel P55 Chipset BUG [usbhid-raw/devices/broken?] [tested 3 different UPS']

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 1 Nov 2009 03:55:53 -0500 (EST)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Arjan van de Ven <arjan@...radead.org>
cc:	Alan Stern <stern@...land.harvard.edu>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	nut-upsuser@...ts.alioth.debian.org, bruce.w.allan@...el.com,
	Alan Piszcz <ap@...arrain.com>
Subject: Re: 2.6.31.4: Intel P55 Chipset BUG [usbhid-raw/devices/broken?]
 [tested 3 different UPS']



On Sat, 31 Oct 2009, Arjan van de Ven wrote:

> On Sat, 31 Oct 2009 19:43:38 -0400 (EDT)
> Justin Piszcz <jpiszcz@...idpixels.com> 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@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/