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Date:      Thu, 04 Dec 2025 19:09:01 +0000
From:      bugzilla-noreply@freebsd.org
To:        wireless@FreeBSD.org
Subject:   [Bug 291403] iwm(4): iwm8000Cfw: could not load firmware image
Message-ID:  <bug-291403-21060@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291403

            Bug ID: 291403
           Summary: iwm(4): iwm8000Cfw: could not load firmware image
           Product: Base System
           Version: 15.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: wireless
          Assignee: wireless@FreeBSD.org
          Reporter: avgwst@tutanota.de

Created attachment 265847
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=265847&action=edit
This patch fixes incorrectly written entry in /boot/defaults/loader.conf

OS version, that this bug affects:
FreeBSD 15.0-STABLE 1500503

$ grep "iwm" /var/log/messages:
Nov 30 09:04:28 bsdlap kernel: iwm0: <Intel(R) Dual Band Wireless AC 8260> mem
0xe1100000-0xe1101fff at device 0.0 on pci2
Nov 30 09:04:28 bsdlap kernel: iwm8000Cfw: could not load firmware image, error
2
Nov 30 09:04:28 bsdlap kernel: iwm0: could not read firmware iwm8000Cfw (error
0)
Nov 30 09:04:28 bsdlap kernel: device_attach: iwm0 attach returned 6
Nov 30 09:04:28 bsdlap kernel: iwm0: <Intel(R) Dual Band Wireless AC 8260> mem
0xe1100000-0xe1101fff at device 0.0 on pci2
Nov 30 09:04:28 bsdlap kernel: iwm8000Cfw: could not load firmware image, error
2
Nov 30 09:04:28 bsdlap kernel: iwm0: could not read firmware iwm8000Cfw (error
0)
Nov 30 09:04:28 bsdlap kernel: device_attach: iwm0 attach returned 6
Nov 30 09:04:28 bsdlap kernel: iwm0: <Intel(R) Dual Band Wireless AC 8260> mem
0xe1100000-0xe1101fff at device 0.0 on pci2
Nov 30 09:04:28 bsdlap kernel: iwm8000Cfw: could not load firmware image, error
2
Nov 30 09:04:28 bsdlap kernel: iwm0: could not read firmware iwm8000Cfw (error
0)
Nov 30 09:04:28 bsdlap kernel: device_attach: iwm0 attach returned 6
Nov 30 09:04:28 bsdlap kernel: iwm0: <Intel(R) Dual Band Wireless AC 8260> mem
0xe1100000-0xe1101fff at device 0.0 on pci2
Nov 30 09:04:28 bsdlap kernel: iwm8000Cfw: could not load firmware image, error
2
Nov 30 09:04:28 bsdlap kernel: iwm0: could not read firmware iwm8000Cfw (error
0)
Nov 30 09:04:28 bsdlap kernel: device_attach: iwm0 attach returned 6
Nov 30 09:04:28 bsdlap kernel: iwm0: <Intel(R) Dual Band Wireless AC 8260> mem
0xe1100000-0xe1101fff at device 0.0 on pci2
Nov 30 09:04:28 bsdlap kernel: iwm8000Cfw: could not load firmware image, error
2
Nov 30 09:04:28 bsdlap kernel: iwm0: could not read firmware iwm8000Cfw (error
0)
Nov 30 09:04:28 bsdlap kernel: device_attach: iwm0 attach returned 6
Nov 30 09:04:28 bsdlap kernel: iwm0: <Intel(R) Dual Band Wireless AC 8260> mem
0xe1100000-0xe1101fff at device 0.0 on pci2
Nov 30 09:04:28 bsdlap kernel: iwm8000Cfw: could not load firmware image, error
2
Nov 30 09:04:28 bsdlap kernel: iwm0: could not read firmware iwm8000Cfw (error
0)
Nov 30 09:04:28 bsdlap kernel: device_attach: iwm0 attach returned 6

$ pkg list FreeBSD-firmware-iwm:
/boot/firmware/iwm3160fw
/boot/firmware/iwm3168fw
/boot/firmware/iwm7260fw
/boot/firmware/iwm7265Dfw
/boot/firmware/iwm7265fw
/boot/firmware/iwm8000C     <<<<
/boot/firmware/iwm8265fw
/boot/firmware/iwm9000fw
/boot/firmware/iwm9260fw

$ grep "iwm" /boot/defaults/loader.conf:
iwm3160fw_type="firmware"
iwm7260fw_type="firmware"
iwm7265fw_type="firmware"
iwm8265fw_type="firmware"
iwm9260fw_type="firmware"
iwm3168fw_type="firmware"
iwm7265Dfw_type="firmware"
iwm8000C_type="firmware"    <<<<
iwm9000fw_type="firmware"

The problem is that the iwm module tries to load the firmware from
/boot/firmware/iwm8000Cfw, but eventually fails because the filename from the
installed package is incorrect.

To fix this, iwm8000C needs to be renamed to iwm8000Cfw, and an additional
entry must be added to /boot/loader.conf:
$ mv /boot/firmware/iwm8000C /boot/firmware/iwm8000Cfw
$ echo 'iwm8000Cfw_type="firmware"' >> /boot/loader.conf

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