linux-kernel - Re: Intel Wireless 7260 failed to work

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Message-ID: <871swtkvdc.fsf@purkki.adurom.net>
Date:   Tue, 27 Dec 2016 21:46:55 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Peter Xu <peterx@...hat.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-wireless@...r.kernel.org,
        Luca Coelho <luciano.coelho@...el.com>
Subject: Re: Intel Wireless 7260 failed to work

Peter Xu <peterx@...hat.com> writes:

> Looks like latest Linux master (4.10-rc1, 7ce7d89f) cannot work well
> with my wireless card, which is:
>
>   Intel Corporation Wireless 7260 (rev bb)
>
> Boot message shows that no suitable firmware found:
>
>     # journalctl -kp3
>     Dec 27 16:38:00 kernel: Error parsing PCC subspaces from PCCT
>     Dec 27 16:38:00 kernel: mmc0: Unknown controller version (3). You may experience problems.
>     Dec 27 16:38:02 kernel: DMAR: DRHD: handling fault status reg 2
>     Dec 27 16:38:02 kernel: DMAR: [DMA Write] Request device [00:02.0] fault addr 7200000000 [fault reason 05] PTE Write a
>     Dec 27 16:38:03 kernel: tpm tpm0: A TPM error (6) occurred attempting to read a pcr value
>     Dec 27 16:38:04 kernel: iwlwifi 0000:03:00.0: no suitable firmware found!
>
> Linux stable/master (Linux 4.8-rc8, 08895a8b6b) works for me. And no
> further tests have been done yet.
>
> Is this a known issue? Please let me know if anyone wants more info or
> logs, since this error triggers easily (everytime I boot).

The error message isn't really telling much to the user (hint hint) but
I suspect this is by design:

"iwlwifi: remove support for fw older than -17 and -22

FW versions older than -17 for 3160 and 7260 and older than -22 for
newer NICs are not supported anymore.  Don't load these versions
and remove code that handles them."

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4b87e5af638b6056bd6c20b0954d09a5a58633be

Adding luca.

-- 
Kalle Valo