linux-kernel - Re: Fwd: linux v4.14 causes firmware iwlwifi errors on Lenovo Thinkpad T440s

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Date:   Mon, 13 Nov 2017 22:30:31 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Larry Finger <Larry.Finger@...inger.net>
Cc:     linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        Berg <johannes.berg@...el.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>
Subject: Re: Fwd: linux v4.14 causes firmware iwlwifi errors on Lenovo
 Thinkpad T440s

2017-11-13 21:45 GMT+01:00 Larry Finger <Larry.Finger@...inger.net>:
> On 11/13/2017 02:22 PM, Bartosz Golaszewski wrote:
>>
>> Forwarding here too as I messed up the address the last time.
>> --
>>
>> Hi,
>>
>> I noticed my wireless interface can't get up with linux v4.14 and the
>> kernel log is flooded with firmware errors:
>>
>> iwlwifi 0000:03:00.0: Firmware error during reconfiguration - reprobe!
>> iwlwifi 0000:03:00.0: FW error in SYNC CMD DQA_ENABLE_CMD
>>
>> and
>>
>> ieee80211 phy63: Hardware restart was requested.
>>
>> The wireless controller is: Intel Corporation Wireless 7260 (rev 83)
>> Firmware used is: iwlwifi-7260-17
>>
>> Everything works fine with v4.13.12.
>>
>> I didn't have time today to bisect for the offending commit. Full log
>> uploaded[1].
>>
>> Best regards,
>> Bartosz Golaszewski
>>
>> [1] https://pastebin.com/jksqxvS6
>
>
> Your log shows "iwlwifi 0000:03:00.0: loaded firmware version 17.228510.0
> op_mode iwlmvm"
>
> Mine, where the 7260 works, shows "iwlwifi 0000:04:00.0: loaded firmware
> version 17.459231.0 op_mode iwlmvm".
>
> It seems as if you need newer firmware. A detailed file listing shows
> "-rw-r--r-- 1 root root 1049340 Oct  9 12:03
> /lib/firmware/iwlwifi-7260-17.ucode". That date is likely when I installed
> the updated kernel firmware package from my distro. The md5sum for the file
> is 73a217f55c47d3a70bb5dbbe1d676423.
>
> Larry
>

Ok so it seems the version in linux-firmware is outdated. The file
you're using is available on github[1] and fixed the issue for me.

Thanks!
Bartosz Golaszewski

[1] https://github.com/OpenELEC/iwlwifi-firmware