Message-ID: <54B82598.9060403@erley.org> (sfid-20150115_214608_607970_D88B0939)
Date: Thu, 15 Jan 2015 14:39:52 -0600
From: Pat Erley <pat-lkml@erley.org>
MIME-Version: 1.0
To: Mike Purvis <mpurvis@clearpathrobotics.com>,
	linux-wireless@vger.kernel.org
Subject: Re: Delivery Status Notification (Failure)
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On 01/15/2015 01:34 PM, Mike Purvis wrote:
> I'm having an issue with the Centrino Advanced-N 6235 module. I'm running
> Ubuntu Trusty, and I've tried both the 3.13 and 3.16 kernels. Haven't yet
> tried 3.18.
>
> What's weirdest about it is that the module actually works with full
> functionality on an Advantech AIMB-274 (Q87 chipset) with the described
> software configuration. However, when I plug the module into either a Gigabyte
> J1800N or an ASRock IMB-152 (J1900), I get no bluetooth— no hci0 device
> comes up at all in hciconfig dev or rfkill list.

I'd guess that the 6235 module has WLAN on the pci-e connector portion,
and Bluetooth on the USB portion.  Check the docs on the board you're
plugging it into, and I bet the mini-pcie connector doesn't have the
USB side wired up, or it's disabled in(or by) the bios?

>
> My sense is that the 6235 is a very popular module, and low-cost celeron
> motherboards are also pretty popular, so there must be others who have run
> into this. Maybe people just don't use bluetooth, or don't expect it to
> work on Linux?
>
> Anyhow, here is a gist with the dmesg boot log and lshw output:
>
> https://gist.github.com/mikepurvis/ee7bc8fb85ff7ae64a9d
>
> Looks like there's a crash in there related to intel integrated graphics—
> could this be a cause? This is a headless machine, so disabling graphics
> completely is on the table, if someone can suggest a good way to go
> about that. Any other ideas as to what's going on here?
>
> Thanks muchly.
>
>   --
> Mike Purvis | Clearpath Robotics, Inc.
> 1425 Strasburg Road, Unit 2A , Kitchener, Ontario, N2R 1H2
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