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Date:   Fri, 3 Dec 2021 17:09:20 +0100
From:   Lorenzo Bianconi <lorenzo@kernel.org>
To:     Sven Eckelmann <sven@narfation.org>
Cc:     Jan Fuchs <jf@simonwunderlich.de>, linux-wireless@vger.kernel.org,
        nbd@nbd.name, linux-mediatek <linux-mediatek@lists.infradead.org>,
        Sean Wang <sean.wang@mediatek.com>
Subject: Re: mt76: MT7921K monitor mode not working
Message-ID: <YapBMGjLcjuBo/vw@lore-desk>
References: <7e156597-a206-b236-e4c8-d476614de7ef@simonwunderlich.de>
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> On Thursday, 2 December 2021 23:13:31 CET Lorenzo Bianconi wrote:
> > IIRC you need to disable runtime-pm and deep-sleep to proper enable mon=
itor
> > mode:
> >=20
> > echo 0 > /sys/kernel/debug/ieee80211/phy<x>/mt76/runtime-pm
> > echo 0 > /sys/kernel/debug/ieee80211/phy<x>/mt76/deep-sleep
> >=20
> > Can you please give it whirl?
>=20
> Jan gave me the card. I've set it to a rather busy channel (2.4GHz channe=
l=20
> 11), created a monitor interface, attached tcpdump and then waited what=
=20
> happens. I didn't get anything and then I've tried to set runtime-pm and =
deep-
> sleep to 0. This didn't change the behavior for me at lot. I saw two pack=
ets=20
> and then it went silent again.
>=20
> I wanted to try the same on a different card (ath11k) in the same system.=
 But
> it crashed my complete system - so I had to recreate the test setup. This=
 time,=20
> I've set runtime-pm + deep-sleep to 0 before creating mon0. After doing t=
his,=20
> it seemed to work.

interesting, adding Sean to the loop here.
It seems the fw is mainting a different state in this case.

@Sean: any pointers?

Regards,
Lorenzo

>=20
> Kind regards,
> 	Sven



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