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Date:      Thu, 03 Dec 2020 12:18:15 +0000
From:      bugzilla-noreply@freebsd.org
To:        wireless@FreeBSD.org
Subject:   [Bug 243992] iwm(4): iwm_pcie_load_section: Could not load the [0] uCode section (Intel Wireless-AC 9560)
Message-ID:  <bug-243992-21060-T9XwU41l2F@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-243992-21060@https.bugs.freebsd.org/bugzilla/>
References:  <bug-243992-21060@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243992

Arie Bikker <src-2016@bikker.homeunix.net> changed:

           What    |Removed                     |Added
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                 CC|                            |src-2016@bikker.homeunix.ne
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--- Comment #17 from Arie Bikker <src-2016@bikker.homeunix.net> ---
(In reply to pete from comment #7)
Can confirm a repeatable malfunction on warm booting from another OS (Windo=
ws)
System: Thinkpad X1 Yoga 4th (20QF), bios version 1.41 (2020-10-27)
iwm dmesg after warm reboot from windows:

iwm0: <Intel(R) Dual Band Wireless AC 9560> mem 0xea338000-0xea33bfff irq 1=
6 at
device 20.3 on pci0
iwm0: fw chunk addr 0x404000 len 712 failed to load
iwm0: iwm_pcie_load_section: Could not load the [0] uCode section
iwm0: iwm_start_fw: failed 60
iwm0: Failed to start INIT ucode: 60

iwm dmesg after full power down:

iwm0: <Intel(R) Dual Band Wireless AC 9560> mem 0xea338000-0xea33bfff irq 1=
6 at
device 20.3 on pci0
iwm0: hw rev 0x310, fw ver 34.3125811985.0, address 84:c5:a6:29:b6:02

My haunch is: "Bios Bug". Probably windows loads firmware that prevents the
next load by FreeBSD after warm reboot. Shouldn't windows's firmware load b=
een
undone by the BIOS during reboot?
If so, this is strictly not a FreeBSD driver issue (although I would be hap=
py
if some fix arrived ;)

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