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Re: iwlwifi in German ICE4 trains

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Hello Gregory,

first of all: thanks for your prompt response.

On Sun, Apr 23, 2023 at 01:06:45PM +0000, Greenman, Gregory wrote:
> Based on the log, I can understand that it had successfully connected to the AP
> (supplicant management interface state: associating -> completed);
> then there're some DHCP errors and eventually the AP sends a deauth.
> It's hard to say what can cause it, but if you'll be able to reproduce
> the issue, it'd be great if you could collect a trace-cmd dump with
> this command:
> sudo trace-cmd record -e iwlwifi -e mac80211 -e cfg80211 -e iwlwifi_msg

Done, see https://www.kleine-koenig.org/tmp/20230424-trace.dat for the
resulting trace.dat file.

> It'll be also helpfull if you'll be able to say which specific
> modprobe option fixes the issue.

The relevant one is
	options iwlwifi 11n_disable=1

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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