Bug#994146: Debian 11 iwlwifi fail to load microcode

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From	Thomas Fazekas <thomas.fazekas@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#994146: Debian 11 iwlwifi fail to load microcode
Date	Sun, 12 Sep 2021 22:00:01 +0200
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Package: firmware-iwlwifi
Version : 20210315-3
OS version : 5.10.0-8-amd64 #1 SMP Debian 5.10.46-4 (2021-08-03) x86_64
GNU/Linux (Bullseye)
Affected hardware : Intel(R) Dual Band Wireless N 7260 (rev 6b)

After upgrading to Debian Bullseye the system fails to bring up wlan0

Related dmesg log :
[    8.161363] iwlwifi 0000:3d:00.0: enabling device (0000 -> 0002)
[    8.171390] iwlwifi 0000:3d:00.0: firmware: direct-loading firmware
iwlwifi-7260-17.ucode
[    8.171666] iwlwifi 0000:3d:00.0: loaded firmware version
17.3216344376.0 7260-17.ucode op_mode iwlmvm
[    8.171689] iwlwifi 0000:3d:00.0: firmware: failed to load
iwl-debug-yoyo.bin (-2)
[    8.241108] iwlwifi 0000:3d:00.0: Detected Intel(R) Dual Band Wireless N
7260, REV=0x144
[   13.320241] iwlwifi 0000:3d:00.0: Failed to load firmware chunk!
[   13.320246] iwlwifi 0000:3d:00.0: iwlwifi transaction failed, dumping
registers
[   13.320248] iwlwifi 0000:3d:00.0: iwlwifi device config registers:
[   13.320512] iwlwifi 0000:3d:00.0: 00000000: 08b18086 00100406 0280006b
00000010 cc100004 00000000 00000000 00000000
[   13.320514] iwlwifi 0000:3d:00.0: 00000020: 00000000 00000000 00000000
c0608086 00000000 000000c8 00000000 00000100
[   13.320515] iwlwifi 0000:3d:00.0: 00000040: 00020010 10008ec0 00130c10
0106ec11 101100ca 00000000 00000000 00000000
[   13.320517] iwlwifi 0000:3d:00.0: 00000060: 00000000 00080812 00000405
00000000 00010001 00000000 00000000 00000000
[   13.320518] iwlwifi 0000:3d:00.0: 00000080: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320520] iwlwifi 0000:3d:00.0: 000000a0: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320522] iwlwifi 0000:3d:00.0: 000000c0: 00000000 00000000 c823d001
0d000000 00814005 fee003f8 00000000 00000000
[   13.320523] iwlwifi 0000:3d:00.0: 000000e0: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320525] iwlwifi 0000:3d:00.0: 00000100: 14010001 00004000 00000000
00462031 00002000 00002000 0000000e 00000000
[   13.320526] iwlwifi 0000:3d:00.0: 00000120: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320528] iwlwifi 0000:3d:00.0: 00000140: 14c10003 ffbb884d 104a7dff
15410018 08460846 0001000b 0141cafe 00f01e1f
[   13.320529] iwlwifi 0000:3d:00.0: iwlwifi device memory mapped registers:
[   13.320581] iwlwifi 0000:3d:00.0: 00000000: 40489204 80000040 20000000
08000000 00000000 00000000 00000000 00000000
[   13.320583] iwlwifi 0000:3d:00.0: 00000020: 00000009 080003c5 00000144
00000000 80000000 803a0000 80008040 00080046
[   13.320587] iwlwifi 0000:3d:00.0: iwlwifi device AER capability
structure:
[   13.320620] iwlwifi 0000:3d:00.0: 00000000: 14010001 00004000 00000000
00462031 00002000 00002000 0000000e 00000000
[   13.320621] iwlwifi 0000:3d:00.0: 00000020: 00000000 00000000 00000000
[   13.320623] iwlwifi 0000:3d:00.0: iwlwifi parent port (0000:3c:01.0)
config registers:
[   13.320760] iwlwifi 0000:3c:01.0: 00000000: 240412d8 00180407 06040005
00010010 00000000 00000000 003d3d3c 000001f1
[   13.320762] iwlwifi 0000:3c:01.0: 00000020: cc10cc10 0001fff1 00000000
00000000 00000000 00000040 00000000 000201ff
[   13.320763] iwlwifi 0000:3c:01.0: 00000040: ffc34c01 00000008 00000000
00816405 fee002d8 00000000 00000000 00000000
[   13.320765] iwlwifi 0000:3c:01.0: 00000060: 00000000 0034b009 04001060
04000800 80000000 0a730100 76b50080 21901d27
[   13.320766] iwlwifi 0000:3c:01.0: 00000080: 000f0000 00000000 33083333
00790010 00008000 0000116b 000f0022 00000000
[   13.320768] iwlwifi 0000:3c:01.0: 000000a0: 00000000 00000000 00000000
00000000 0000c00d 240412d8 00000000 00000000
[   13.320769] iwlwifi 0000:3c:01.0: 000000c0: 00620010 00008001 00100000
01203c11 10110042 00000000 014803c0 00000000
[   13.320771] iwlwifi 0000:3c:01.0: 000000e0: 00000000 00040800 00000400
00000000 00010042 00000000 00000000 00000000
[   13.320772] iwlwifi 0000:3c:01.0: 00000100: 14010001 00000000 00000000
00062011 00000000 00002000 000000a0 00000000
[   13.320774] iwlwifi 0000:3c:01.0: 00000120: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320775] iwlwifi 0000:3c:01.0: 00000140: 20c10002 00000801 03000000
00000000 047f0009 80000001 00000000 087f0019
[   13.320777] iwlwifi 0000:3c:01.0: 00000160: 01000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320778] iwlwifi 0000:3c:01.0: 00000180: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320780] iwlwifi 0000:3c:01.0: 000001a0: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320781] iwlwifi 0000:3c:01.0: 000001c0: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320783] iwlwifi 0000:3c:01.0: 000001e0: 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
[   13.320784] iwlwifi 0000:3c:01.0: 00000200: 00000000 00000000 00000000
[   13.320788] iwlwifi 0000:3d:00.0: Could not load the [0] uCode section
[   13.320798] iwlwifi 0000:3d:00.0: Failed to start INIT ucode: -110
[   13.320800] iwlwifi 0000:3d:00.0: Collecting data: trigger 16 fired.
[   13.568887] iwlwifi 0000:3d:00.0: Not valid error log pointer 0x00000000
for Init uCode
[   13.568898] iwlwifi 0000:3d:00.0: Fseq Registers:
[   13.568904] iwlwifi 0000:3d:00.0: 0x00000000 | FSEQ_ERROR_CODE
[   13.568910] iwlwifi 0000:3d:00.0: 0x00000000 | FSEQ_TOP_INIT_VERSION
[   13.568916] iwlwifi 0000:3d:00.0: 0x00000000 | FSEQ_CNVIO_INIT_VERSION
[   13.568921] iwlwifi 0000:3d:00.0: 0x00000000 | FSEQ_OTP_VERSION
[   13.568927] iwlwifi 0000:3d:00.0: 0x00000000 | FSEQ_TOP_CONTENT_VERSION
[   13.568933] iwlwifi 0000:3d:00.0: 0x00000000 | FSEQ_ALIVE_TOKEN
[   13.568939] iwlwifi 0000:3d:00.0: 0x00000000 | FSEQ_CNVI_ID
[   13.568944] iwlwifi 0000:3d:00.0: 0x00000000 | FSEQ_CNVR_ID
[   13.568950] iwlwifi 0000:3d:00.0: 0x00000000 | CNVI_AUX_MISC_CHIP
[   13.568956] iwlwifi 0000:3d:00.0: 0x00000000 | CNVR_AUX_MISC_CHIP
[   13.568962] iwlwifi 0000:3d:00.0: 0x00000000 |
CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[   13.568967] iwlwifi 0000:3d:00.0: 0x00000000 |
CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[   14.550533] iwlwifi 0000:3d:00.0: Failing on timeout while stopping DMA
channel 8 [0xa5a5a5a2]
[   14.568322] iwlwifi 0000:3d:00.0: Failed to run INIT ucode: -110

Once moving back to Debian Buster (reinstalled the system, downgrade didn't
work) the wifi is back in business

Thanks,

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Bug#994146: Debian 11 iwlwifi fail to load microcode Thomas Fazekas <thomas.fazekas@gmail.com> - 2021-09-12 22:00 +0200
  Bug#994146: (No Subject) Dimitar Gerasimov <dgerasimov@protonmail.com> - 2022-01-23 09:50 +0100

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