Re: kern/59922: iwm0 - Intel Dual Band Wireless AC 8265 (rev. 0x78) - stopped working on NetBSD 11.0_BETA

["requiem. via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR kern/59922; it has been noted by GNATS.

From: "requiem." <rqm%0xde501a7a.net@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
	bartek.krawczyk%gmail.com@localhost
Subject: Re: kern/59922: iwm0 - Intel Dual Band Wireless AC 8265 (rev. 0x78)
 - stopped working on NetBSD 11.0_BETA
Date: Thu, 15 Jan 2026 11:23:38 +0000

 If it provides more context I had a similar issue on i386 with athn0 as wel=
 l as rtwn0. Please see the message here:
 
 https://marc.info/?l=3Dnetbsd-bugs&m=3D176817698721327&w=3D2
 
 I haven't found a fix outside of downgrading to 10.1.
 
 15 Jan 2026 10:10:22 Michael van Elst via gnats <gnats-admin%NetBSD.org@localhost>:
 
 > The following reply was made to PR kern/59922; it has been noted by GNATS=
 .
 >=20
 > From: mlelstv%serpens.de@localhost (Michael van Elst)
 > To: gnats-bugs%netbsd.org@localhost
 > Cc:
 > Subject: Re: kern/59922: iwm0 - Intel Dual Band Wireless AC 8265 (rev. 0x=
 78) - stopped working on NetBSD 11.0_BETA
 > Date: Thu, 15 Jan 2026 10:07:28 -0000 (UTC)
 >=20
 > gnats-admin%NetBSD.org@localhost ("bartek.krawczyk%gmail.com@localhost via gnats") writes:
 >=20
 >>[=C2=A0=C2=A0=C2=A0=C2=A0 4.271387] iwm0: hw rev 0x230, fw ver 22.361476.=
 0, address 40:74:e0:51:38:58
 >>[=C2=A0=C2=A0=C2=A0 19.361390] iwm0: autoconfiguration error: could not i=
 nit bt coex (error 35)
 >=20
 >>laptop# ifconfig iwm0
 >>iwm0: flags=3D0x8803<UP,BROADCAST,SIMPLEX,MULTICAST> mtu 1500
 >>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ssid "" nwkey 65536:"","","","=
 "
 >>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 powersave off
 >>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 address: 40:74:e0:51:38:58
 >>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 media: IEEE802.11 autoselect
 >>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 status: no network
 >=20
 >=20
 > There is hardly any difference between netbsd-10 and netbsd-11
 > regarding the iwm driver and it is known to be pretty flaky.
 >=20
 > One possible difference is the interaction with dhcpcd. It's
 > possible that without dhcpcd the interface associates to the network,
 > and when you start dhcpcd aftwards, that it appears to function.
 > At least that's one of the failure modes I've seen.
 >=20
 > In netbsd-current I have tried to fix iwm and it now seems to be
 > stable for me and some others.
 >=20
 > You could try to boot a current kernel from the daily build
 > (you may need to also install the modules set from current).
 >=20
 > Or if you are experienced, you could build a netbsd-11 kernel with
 > the updated driver from netbsd-current.
 >=20
 >=20