Hello Gregory, there is a thread on debian-user-german@xxxxxxxxxxxxxxxx[1] about broken wifi on Thinkpads when they are supposed to be connected to the hotspots available in ICE4 trains. The mailing lists language is German and the thread is long, so I sum up the problem: - It only affects the wifi equipment in ICE4 trains, the older ones work fine. - Can be seen at least on - Jürgen's laptop (Intel Corporation Wireless 8260 [8086:24f3] (rev 3a)) - Marc's Thinkpad X260 (Intel Corporation Wireless 8260 [8086:24f3] (rev 3a)) - Uwe's Thinkpad T460p (Intel Corporation Wireless 8260 [8086:24f3] (rev 3a)) - Other Thinkpads with a Realtek-Chip doesn't show the problem - Works on puppy-Linux with 4.19.23, however Debian with 4.19.0-18 is also broken. - The OP provided a syslog dump at https://lists.debian.org/msgid-search/75ad7ff2-ef25-90cd-2cb3-1f49f3e4909e@xxxxxxxxx I don't reproduce it here, but the gist seems to be: Jun 23 15:44:53 lina kernel: [ 1006.011129] wlp1s0: deauthenticated from 3c:51:0e:56:32:80 (Reason: 2=PREV_AUTH_NOT_VALID) - it seems to help to do: $ cat /etc/modprobe.d/iwlwifi.conf options iwlwifi 11n_disable=1 swcrypto=0 bt_coex_active=0 power_save=0 options iwlmvm power_scheme=1 options iwlwifi d0i3_disable=1 options iwlwifi uapsd_disable=1 options iwlwifi lar_disable=1 I added all participants of said thread to Cc, in case I forgot something relevant. Tomorrow I might have the opportunity to test and reproduce the problem (I don't know if my train will be an ice4 or one of the older ones though.) I wonder if there is something you want me to test. Without further input I will try with the modprobe options and check for a minimal subset of them that makes the problem disappear. Is there something I can do to make the problem better understandable for someone who knows about the hardware? Or to find out the critical detail about the wifi hotspot that triggers the problem? Best regards Uwe [1] https://lists.debian.org/msgid-search/da8c1552-6bcb-14c3-0e86-abcb835ec350@xxxxxxxxx -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | https://www.pengutronix.de/ |
Attachment:
signature.asc
Description: PGP signature
