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

On 11/13/2017 03:30 PM, Bartosz Golaszewski wrote:
2017-11-13 21:45 GMT+01:00 Larry Finger <Larry.Finger@xxxxxxxxxxxx>:
On 11/13/2017 02:22 PM, Bartosz Golaszewski wrote:

Forwarding here too as I messed up the address the last time.


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


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

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.


Ok so it seems the version in linux-firmware is outdated.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.

Bartosz Golaszewski

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

Interesting. Using md5sum of the git repo for linux-firmware gets
73a217f55c47d3a70bb5dbbe1d676423  iwlwifi-7260-17.ucode.

That is the file I'm using.