Re: What's needed for a PCIe card to be recognized?

Am Sat, 16 Feb 2008 18:29:39 -0800
schrieb Arjan van de Ven <arjan@xxxxxxxxxxxxx>:

On Sun, 17 Feb 2008 01:54:53 +0100
Hans-Jürgen Koch <hjk@xxxxxxxxxxxxx> wrote:

Am Sat, 16 Feb 2008 14:39:46 -0800
schrieb Arjan van de Ven <arjan@xxxxxxxxxxxxx>:

On Sat, 16 Feb 2008 22:59:32 +0100
Hans-Jürgen Koch <hjk@xxxxxxxxxxxxx> wrote:

I'm playing around with a vanilla 2.6.25-rc1, adding patches to
make it work on an Asus EeePC. That one has the problem that its
Mini PCIe WLAN module doesn't show up in lspci. That brought up
a few questions that I couldn't answer yet:

How can they "hide" a PCIe card?
What could be their motive to do that?
How can I make it appear?


go to the bios, enable the wireless card.

that did it for me ;)

It didn't for me. I tried all combinations (booting with/without
WLAN enabled, enabling WLAN through /proc with/without pciehp
loaded and so on). What kernel did you use, and which patches did
you apply?


I used a pretty much stock Fedora 8 kernel..

Hm, interesting. My guess was that enabling the card in BIOS simply
switches the power of the WLAN card on. But I really don't understand
why it's not detected then with my vanilla kernel. My naive thought was
that the kernel scans all possible PCI[e] slots a chipset offers and
finds all cards there. Seems to be a bit more subtle...

no magic patches at all.

Well, they've at least added atl2 support, otherwise you had no
wired LAN either.

Of course there's no driver for the wlan, but that's a different
story ;)

I replaced that unsupported Atheros 5007 card with an ipw3945, so I
haven't got that problem.

Thanks,
Hans

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