NetBSD Problem Report #59714

From www@netbsd.org  Sun Oct 19 20:16:27 2025
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Date: Sun, 19 Oct 2025 20:16:25 +0000 (UTC)
From: marc@coquand.email
Reply-To: marc@coquand.email
To: gnats-bugs@NetBSD.org
Subject: Struggling with iwm on Intel Wireless 8265 / 8275: could not load firmware + carrier lost
X-Send-Pr-Version: www-1.0

>Number:         59714
>Category:       kern
>Synopsis:       Struggling with iwm on Intel Wireless 8265 / 8275: could not load firmware + carrier lost
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Oct 19 20:20:00 +0000 2025
>Last-Modified:  Mon Oct 20 18:35:01 +0000 2025
>Originator:     Marc
>Release:        10.1
>Organization:
>Environment:
NetBSD 10.1 Generic
>Description:
On my Thinkpad T480S (Intel Wireless 8265 / 8275), I'm having issues connecting to wifi.

I'm able to view available networks by running `ifconfig iwm0`, but I can not seem to connect to wifi.

I've set the connection with

ifconfig iwm0 up
ifconfig iwm0 ssid "My Wifi" nwkey "mypassword"

and made sure the ssid/nwkey are correct, works on other devices. 

I then try to connect with dhcpcd:

$ dhcpcd -M iwm0
iwm0: dhcpcd-9.4.1 starting
iwm0: DUID ...
iwm0: waiting for carrier
iwm0: carrier acquired
iwm0: IAID ...
iwm0: soliciting an IPv6 router
iwm0: soliciting a DHCP lease
iwm0: carrier lost - roaming
iwm0: probing for an IPv4LL address
iwm0: using IPv4LL address 169.XXX.XX.XXX
iwm0: carrier acquired
iwm0: IAID XX:XX:XX:XX
iwm0: soliciting an IPv6 router
iwm0: soliciting a DHCP lease
iwm0: carrier lost - roaming

From dmesg I'm noticing this error

iwm0: autoconfiguration error: could not load firmware (error 35, ok 1)
iwm0: autoconfiguration error: cpu1 status: 0x3030001
iwm0: autoconfiguration error: cpu2 status: 0x0
iwm0: autoconfiguration error: could not load firmware (error 35)
iwm0: autoconfiguration error: could not load firmware (error 35, ok 1)
iwm0: autoconfiguration error: cpu1 status: 0xa5a5a5a0
iwm0: autoconfiguration error: cpu2 status: 0xa5a5a5a0

It has worked in the past, so not sure what's wrong here.

>How-To-Repeat:

>Fix:

>Audit-Trail:
From: mlelstv@serpens.de (Michael van Elst)
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/59714: Struggling with iwm on Intel Wireless 8265 / 8275: could not load firmware + carrier lost
Date: Mon, 20 Oct 2025 15:28:53 -0000 (UTC)

 marc@coquand.email writes:

 >On my Thinkpad T480S (Intel Wireless 8265 / 8275), I'm having issues connecting to wifi.


 >iwm0: autoconfiguration error: could not load firmware (error 35, ok 1)
 >iwm0: autoconfiguration error: cpu1 status: 0x3030001
 >iwm0: autoconfiguration error: cpu2 status: 0x0
 >iwm0: autoconfiguration error: could not load firmware (error 35)
 >iwm0: autoconfiguration error: could not load firmware (error 35, ok 1)
 >iwm0: autoconfiguration error: cpu1 status: 0xa5a5a5a0
 >iwm0: autoconfiguration error: cpu2 status: 0xa5a5a5a0


 The iwm driver has lots of issues and I wonder if it ever worked
 stable for anyone.

 I have pulled a couple of changes from OpenBSD in the last weeks
 and now can use an Intel Wireless AC 3168. I try to get some
 other chips (7265 and 8265) to see if these can be used as well.


From: "Marc Coquand" <marc@coquand.email>
To: <gnats-bugs@netbsd.org>
Cc: 
Subject: Re: kern/59714: Struggling with iwm on Intel Wireless 8265 / 8275:
 could not load firmware + carrier lost
Date: Mon, 20 Oct 2025 18:23:18 +0200

 Ah that sounds promising!

 I am able to compile the kernel, so if the patches are available
 somewhere then I could try it out and see if they work on my device. :)

 Sincerely,
 Marc

 On Mon Oct 20, 2025 at 5:30 PM CEST, Michael van Elst via gnats wrote:
 > The following reply was made to PR kern/59714; it has been noted by GNATS=
 .
 >
 > From: mlelstv@serpens.de (Michael van Elst)
 > To: gnats-bugs@netbsd.org
 > Cc:=20
 > Subject: Re: kern/59714: Struggling with iwm on Intel Wireless 8265 / 827=
 5: could not load firmware + carrier lost
 > Date: Mon, 20 Oct 2025 15:28:53 -0000 (UTC)
 >
 >  marc@coquand.email writes:
 > =20
 >  >On my Thinkpad T480S (Intel Wireless 8265 / 8275), I'm having issues co=
 nnecting to wifi.
 > =20
 > =20
 >  >iwm0: autoconfiguration error: could not load firmware (error 35, ok 1)
 >  >iwm0: autoconfiguration error: cpu1 status: 0x3030001
 >  >iwm0: autoconfiguration error: cpu2 status: 0x0
 >  >iwm0: autoconfiguration error: could not load firmware (error 35)
 >  >iwm0: autoconfiguration error: could not load firmware (error 35, ok 1)
 >  >iwm0: autoconfiguration error: cpu1 status: 0xa5a5a5a0
 >  >iwm0: autoconfiguration error: cpu2 status: 0xa5a5a5a0
 > =20
 > =20
 >  The iwm driver has lots of issues and I wonder if it ever worked
 >  stable for anyone.
 > =20
 >  I have pulled a couple of changes from OpenBSD in the last weeks
 >  and now can use an Intel Wireless AC 3168. I try to get some
 >  other chips (7265 and 8265) to see if these can be used as well.
 > =20
 > =20

From: Ramiro Aceves <ea1abz@gmail.com>
To: gnats-bugs@netbsd.org, kern-bug-people@netbsd.org,
 gnats-admin@netbsd.org, netbsd-bugs@netbsd.org, marc@coquand.email
Cc: 
Subject: Re: kern/59714: Struggling with iwm on Intel Wireless 8265 / 8275:
 could not load firmware + carrier lost
Date: Mon, 20 Oct 2025 19:54:37 +0200

 El 20/10/25 a las 17:30, Michael van Elst via gnats escribió:
 > The following reply was made to PR kern/59714; it has been noted by GNATS.
 > 
 > From: mlelstv@serpens.de (Michael van Elst)
 > To: gnats-bugs@netbsd.org
 > Cc:
 > Subject: Re: kern/59714: Struggling with iwm on Intel Wireless 8265 / 8275: could not load firmware + carrier lost
 > Date: Mon, 20 Oct 2025 15:28:53 -0000 (UTC)
 > 
 >   marc@coquand.email writes:
 >   
 >   >On my Thinkpad T480S (Intel Wireless 8265 / 8275), I'm having issues connecting to wifi.
 >   
 >   
 >   >iwm0: autoconfiguration error: could not load firmware (error 35, ok 1)
 >   >iwm0: autoconfiguration error: cpu1 status: 0x3030001
 >   >iwm0: autoconfiguration error: cpu2 status: 0x0
 >   >iwm0: autoconfiguration error: could not load firmware (error 35)
 >   >iwm0: autoconfiguration error: could not load firmware (error 35, ok 1)
 >   >iwm0: autoconfiguration error: cpu1 status: 0xa5a5a5a0
 >   >iwm0: autoconfiguration error: cpu2 status: 0xa5a5a5a0
 >   
 >   
 >   The iwm driver has lots of issues and I wonder if it ever worked
 >   stable for anyone.

 Hi,

 I am using in a daily basis iwm0 driver with this device in my thinkpad 
 x260:

 [     1,013793] iwm0 at pci2 dev 0 function 0: Intel Dual Band Wireless 
 AC 8260 (rev. 0x3a)

 The only problem I found is that sometimes it takes long time to connect 
 to the router but once it connects it works "well", slow but stable.

 iwm0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
 	ssid MiFibra-3422 nwkey *****
 	powersave off
 	bssid 62:8d:26:32:34:26 chan 6
 	address: 44:85:00:e7:97:30
 	media: IEEE802.11 autoselect (OFDM54 mode 11g)
 	status: active
 	inet6 fe80::4685:ff:fee7:9730%iwm0/64 flags 0 scopeid 0x3
 	inet 192.168.1.204/24 broadcast 192.168.1.255 flags 0


 netbsd-x260$ speedtest
 Retrieving speedtest.net configuration...
 Testing from Jazztel (87.222.91.152)...
 Retrieving speedtest.net server list...
 Selecting best server based on ping...
 Hosted by Melbicom (Madrid) [10.47 km]: 11.085 ms
 Testing download 
 speed................................................................................
 Download: 14.40 Mbit/s
 Testing upload 
 speed......................................................................................................
 Upload: 2.18 Mbit/s

 netbsd-x260$ dmesg |grep iwm
 [     1,013793] acpiwmi0 at acpi0 (WMI1, PNP0C14-1): ACPI WMI Interface
 [     1,013793] acpiwmibus at acpiwmi0 not configured
 [     1,013793] acpiwmi1 at acpi0 (WMI2, PNP0C14-2): ACPI WMI Interface
 [     1,013793] acpiwmibus at acpiwmi1 not configured
 [     1,013793] acpiwmi2 at acpi0 (WMI3, PNP0C14-3): ACPI WMI Interface
 [     1,013793] acpiwmibus at acpiwmi2 not configured
 [     1,013793] iwm0 at pci2 dev 0 function 0: Intel Dual Band Wireless 
 AC 8260 (rev. 0x3a)
 [     1,013793] iwm0: interrupting at msi3 vec 0
 [     6,551359] iwm0: hw rev 0x200, fw ver 22.361476.0, address 
 44:85:00:e7:97:30

 Also remember some iwm firmware errors after "shutdown -p now" (I cannot 
 find them in the logs)

 Ramiro



 >   
 >   I have pulled a couple of changes from OpenBSD in the last weeks
 >   and now can use an Intel Wireless AC 3168. I try to get some
 >   other chips (7265 and 8265) to see if these can be used as well.
 >   
 >   

From: mlelstv@serpens.de (Michael van Elst)
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/59714: Struggling with iwm on Intel Wireless 8265 / 8275: could not load firmware + carrier lost
Date: Mon, 20 Oct 2025 18:06:19 -0000 (UTC)

 ea1abz@gmail.com (Ramiro Aceves) writes:

 >Download: 14.40 Mbit/s
 >Testing upload 
 >speed......................................................................................................
 >Upload: 2.18 Mbit/s

 That is one of the "brokeness" symptoms. Even when it works,
 performance is bad.



From: Ramiro Aceves <ea1abz@gmail.com>
To: gnats-bugs@netbsd.org, kern-bug-people@netbsd.org,
 gnats-admin@netbsd.org, netbsd-bugs@netbsd.org, marc@coquand.email
Cc: 
Subject: Re: kern/59714: Struggling with iwm on Intel Wireless 8265 / 8275:
 could not load firmware + carrier lost
Date: Mon, 20 Oct 2025 20:30:36 +0200

 El 20/10/25 a las 20:10, Michael van Elst via gnats escribió:
 > The following reply was made to PR kern/59714; it has been noted by GNATS.
 > 
 > From: mlelstv@serpens.de (Michael van Elst)
 > To: gnats-bugs@netbsd.org
 > Cc:
 > Subject: Re: kern/59714: Struggling with iwm on Intel Wireless 8265 / 8275: could not load firmware + carrier lost
 > Date: Mon, 20 Oct 2025 18:06:19 -0000 (UTC)
 > 
 >   ea1abz@gmail.com (Ramiro Aceves) writes:
 >   
 >   >Download: 14.40 Mbit/s
 >   >Testing upload
 >   >speed......................................................................................................
 >   >Upload: 2.18 Mbit/s
 >   
 >   That is one of the "brokeness" symptoms. Even when it works,
 >   performance is bad.
 >   
 >   

 Yes, better than nothing :-)

 >   

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