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

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Message-ID: <20161228035959.GB3924@pxdev.xzpeter.org>
Date:   Wed, 28 Dec 2016 11:59:59 +0800
From:   Peter Xu <peterx@...hat.com>
To:     Kalle Valo <kvalo@...eaurora.org>
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

On Tue, Dec 27, 2016 at 09:46:55PM +0200, Kalle Valo wrote:
> 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.

Thanks for the triage.

Larry's link for -17 firmware solved my issue. Though I still don't
know whether it is too aggresive if we just remove the support for -16
(which is the one I was using with the old 4.6 kernel, btw I am using
Fedora 24, which is relatively new as well).

Regards,

-- peterx