Intel PCI-E 4965AGN wireless iwn(4) isn't detected on Compaq 6715s laptop - USB bus?

Anton Shterenlikht mexas at
Mon Aug 2 12:36:08 UTC 2010

On Sun, Aug 01, 2010 at 03:54:42PM +0200, Roland Smith wrote:
> On Tue, Jul 27, 2010 at 10:23:49AM +0100, Anton Shterenlikht wrote:
> > Hi
> > 
> > I've HP Compaq 6715s laptop. I'm trying
> > to get wireless working. The laptop has
> > Intel 4965 4965AGN wireless WiFi PCI-E card 802.11N AGN
> > which is supported by iwn(4). I compiled iwn support
> > into the kernel as suggested by the man page.
> Did you also compile in the correct firmware module?

yes, I did

>From my kernel config file:

device          iwn
device          iwnfw

and this is from dmesg (verbose boot):

% grep iwn /var/run/dmesg.boot
firmware: 'iwn6050fw' version 0: 463692 bytes loaded at 0xffffffff80a42184
firmware: 'iwn1000fw' version 0: 335056 bytes loaded at 0xffffffff808aa884
firmware: 'iwn4965fw' version 0: 187972 bytes loaded at 0xffffffff808fc634
firmware: 'iwn5000fw' version 0: 353240 bytes loaded at 0xffffffff8092a554
firmware: 'iwn5150fw' version 0: 337400 bytes loaded at 0xffffffff80980a04
firmware: 'iwn6000fw' version 0: 454608 bytes loaded at 0xffffffff809d30d4

so the modules are loaded but the device didn't attach.

> > However, the card doesn't appear in dmesg or
> > in pciconf -lv.
> Hmm. My 5100 AGN is correctly detected and used;
> iwn0 at pci0:14:0:0:	class=0x028000 card=0x12018086 chip=0x42328086 rev=0x00 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = 'Carte Intel WiFi Link 5100 AGN (Intel WiFi Link 5100)'
>     class      = network
> iwn0: <Intel(R) PRO/Wireless 5100> mem 0xf2200000-0xf2201fff irq 18 at device 0.0 on pci14
> iwn0: MIMO 1T2R, MoW, address 00:22:fa:a3:b6:50
> iwn0: [ITHREAD]
> iwn0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
> iwn0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
> iwn0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36M

well.. I get nothing:

% pciconf -lv|grep iwn

> > The laptop has a wireless toggle button, which is supposed
> > to enable/disable wireless. There is also an LED, which
> > lights on when wireless is enabled, and goes off
> > when wireless is off. Well, at least this is what
> > should happen.
> > 
> > On boot the LED is on.
> > 
> > If I press the button to disable wireless, the LED goes
> > off and in dmesg I see:
> > 
> > ugen0.2: <Broadcom Corp> at usbus0 (disconnected)
> > 
> > When I switch wireless back on again I see in dmesg:
> > 
> > ugen0.2: <Broadcom Corp> at usbus0
> > Does this mean that wireless sits on USB bus?
> I don't think so. I think this is some kind of management interface? I get the
> same messages when I switch off my 5100 AGN.
> > Does this give me a clue about how to debug
> > the problem further?
> It puzzles me that it is not seen in the pciconf output. Could it be that the
> wireless is disabled in the laptop's BIOS?

I can't see any wireless BIOS option.

I reset to default options, so now the only
"disabled" options are under "Device Configurations"

Swap Fn/Ctrl Keys			Disable
Fan Always on while on AC Power		Disable
Windows Vista(TM) Direct App Launch	Disable

The default options also show under "Built-In
Device Options":

Embedded Bluetooth Device Radio	Enable
Wake on LAN			Enable

but these shouldn't really be affecting WLAN.

Maybe I should check the connectors on the card.
The old Broadcom card had 2 connectors, this
Intel card has 3, so I connected only terminals
1 and 2 to the laptop - there are no other wires.

Maybe I should have another look at this..

many thanks

Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423

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