Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18;
Date:   Wed, 9 Feb 2022 20:48:17 +0100 (CET)
From:   =?UTF-8?Q?Gabriel_F=C3=A9ron?= <g@leirbag.net>
To:     Linux Wireless <linux-wireless@vger.kernel.org>
Message-ID: <MvV0sOB--3-2@leirbag.net>
Subject: Disconnection every 10 minutes with mt7921e
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

Hi,

I have a laptop with a MediaTek mt7921 wireless chip, and I'm getting disco=
nnected from the AP every 10 minutes (PREV_AUTH_NOT_VALID). I've tried to d=
isable aspm, without any noticeable improvements.

The only relevant information to my problem I found on the mailing list was=
 regarding a problem that could lead to the driver preventing wpa_supplican=
t from receiving EAPOL frames.

I'm currently running a manually built kernel 5.17.0-0.rc3.20220208git555f3=
d7be91a on Fedora 35 (to toggle the requested CONFIG_MAC80211_ debugging bu=
ild options).

So far, I haven't seen anything suspicious from wpa_supplicant, which simpl=
y reacts to the event accordingly (from events NL80211_CMD_DEL_STATION then=
 NL80211_CMD_DISASSOCIATE).

-- lspci

03:00.0 Network controller: MEDIATEK Corp. MT7921 802.11ax PCI Express Wire=
less Network Ada
pter
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Subsystem: Lenovo Device e0bc
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Kernel driver in use: mt7921e
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Kernel modules: mt7921e

-- iw events

wlp3s0: del station 34:xx:xx:xx:xx:xx
wlp3s0 (phy #0): disassoc 34:xx:xx:xx:xx:xx -> b4:xx:xx:xx:xx:xx reason 2: =
Previous authentication no longer valid
wlp3s0 (phy #0): disconnected (by AP) reason: 2: Previous authentication no=
 longer valid
phy #0: regulatory domain change: set to world roaming by the wireless core=
 upon initialization request
regulatory domain change: set to DE by a user request
wlp3s0 (phy #0): scan started
wlp3s0 (phy #0): scan finished: 2462, "XXXXX" ""
wlp3s0 (phy #0): scan started
wlp3s0 (phy #0): scan finished: 2412 2417 2422 2427 2432 2437 2442 2447 245=
2 2457 2462 2467 2472 5180 5200 5220 5240 5260 5280 5300 5320 5500 5520 554=
0 5560 5580 5600 5620 5640 5660 5680 5700 5720 5745 5765 5785 5805 5825 584=
5 5865, "XXXXX" ""
wlp3s0: new station 34:xx:xx:xx:xx:xx
wlp3s0 (phy #0): auth 34:xx:xx:xx:xx:xx -> b4:xx:xx:xx:xx:xx status: 0: Suc=
cessful
wlp3s0 (phy #0): assoc 34:xx:xx:xx:xx:xx -> b4:xx:xx:xx:xx:xx status: 0: Su=
ccessful
wlp3s0 (phy #0): connected to 34:xx:xx:xx:xx:xx

-- dmesg

wlp3s0: disassociated from 34:xx:xx:xx:xx:xx (Reason: 2=3DPREV_AUTH_NOT_VAL=
ID)
wlp3s0: authenticate with 34:xx:xx:xx:xx:xx
wlp3s0: send auth to 34:xx:xx:xx:xx:xx (try 1/3)
wlp3s0: authenticated
wlp3s0: associate with 34:xx:xx:xx:xx:xx (try 1/3)
wlp3s0: RX AssocResp from 34:xx:xx:xx:xx:xx (capab=3D0x1511 status=3D0 aid=
=3D1)
wlp3s0: associated
wlp3s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 34:xx:xx:xx:x=
x:xx

Thanks,
--
Gabriel F=C3=A9ron