Wi-Fi カードは正常に動作しますが、システムで検出されなくなりました。

Wi-Fiは動作していますが、無線インターフェイスが見つからず、数日間接続できませんでした。

Intel Dual Band Wireless AC(2x2) 8265を搭載したThinkpad T470を使用しています。 Debianテストでは、ファームウェア-linux-nonfreeとファームウェア-iwlwifiがインストールされました（まだ更新されていません）。

lspci 出力にネットワークアダプタが表示されません。

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point LPC Controller/eSPI Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (4) I219-LM (rev 21)

dmesg | grep iwl空いた。rfkillBluetoothのみが表示されます。カードがまったく検出されなかったため、lsmodはワイヤレスモジュールをロードしませんでした。一方、Bluetoothは完全に機能し、うまく機能します。

debian-live-10.10.0-amd64-xfce+nonfree.isoで起動しましたが、すべてが機能するはずですが、再度ワイヤレスカードが検出されません。

それでログをもう少し調べました。 9月9日Wi-Fiが正常に動作し、正しく読み込まれます。

Sep  9 13:26:50 jupiter kernel: [    5.791176] Intel(R) Wireless WiFi driver for Linux
Sep  9 13:26:50 jupiter kernel: [    5.791529] iwlwifi 0000:04:00.0: enabling device (0000 -> 0002)
Sep  9 13:26:50 jupiter kernel: [    5.801795] resource sanity check: requesting [mem 0xfed10000-0xfed15fff], which spans more than pnp 00:07 [mem 0xfed10000-0xfed13fff]
Sep  9 13:26:50 jupiter kernel: [    5.801804] caller snb_uncore_imc_init_box+0x78/0xc0 [intel_uncore] mapping multiple BARs
Sep  9 13:26:50 jupiter kernel: [    5.815752] iwlwifi 0000:04:00.0: firmware: direct-loading firmware iwlwifi-8265-36.ucode
Sep  9 13:26:50 jupiter kernel: [    5.816246] iwlwifi 0000:04:00.0: loaded firmware version 36.ad812ee0.0 8265-36.ucode op_mode iwlmvm
Sep  9 13:26:50 jupiter kernel: [    5.816877] iwlwifi 0000:04:00.0: firmware: failed to load iwl-debug-yoyo.bin (-2)

最後のエラーは明らかに無害です。

コンピュータを何度も停止してから翌日（9月10日）に再起動したところ、kern.logに次のエラーと（選択した）メッセージが表示されました。

: can't change power state from unknown to D0 (config space inaccessible)
Sep 10 14:45:28 jupiter kernel: [63338.686918] pcieport 0000:00:1c.6: can't change power state from D3hot to D0 (config space inaccessible)
Sep 10 14:45:28 jupiter kernel: [63338.703520] iwlwifi 0000:04:00.0: can't change power state from D3hot to D0 (config space inaccessible)
----------------
Sep 10 14:45:28 jupiter kernel: [63338.814434] iwlwifi 0000:04:00.0: iwlwifi transaction failed, dumping registers
Sep 10 14:45:28 jupiter kernel: [63338.814441] iwlwifi 0000:04:00.0: iwlwifi device config registers:
Sep 10 14:45:28 jupiter kernel: [63338.814808] iwlwifi 0000:04:00.0: 00000000: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814817] iwlwifi 0000:04:00.0: 00000020: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814826] iwlwifi 0000:04:00.0: 00000040: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814834] iwlwifi 0000:04:00.0: 00000060: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814842] iwlwifi 0000:04:00.0: 00000080: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814850] iwlwifi 0000:04:00.0: 000000a0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814858] iwlwifi 0000:04:00.0: 000000c0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814866] iwlwifi 0000:04:00.0: 000000e0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814874] iwlwifi 0000:04:00.0: 00000100: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814883] iwlwifi 0000:04:00.0: 00000120: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814891] iwlwifi 0000:04:00.0: 00000140: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814896] iwlwifi 0000:04:00.0: iwlwifi device memory mapped registers:
Sep 10 14:45:28 jupiter kernel: [63338.814968] iwlwifi 0000:04:00.0: 00000000: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.814976] iwlwifi 0000:04:00.0: 00000020: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.816693] iwlwifi 0000:04:00.0: iwlwifi parent port (0000:00:1c.6) config registers:
Sep 10 14:45:28 jupiter kernel: [63338.817206] iwlwifi 0000:00:1c.6: 00000000: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817214] iwlwifi 0000:00:1c.6: 00000020: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817223] iwlwifi 0000:00:1c.6: 00000040: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817230] iwlwifi 0000:00:1c.6: 00000060: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817238] iwlwifi 0000:00:1c.6: 00000080: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817246] iwlwifi 0000:00:1c.6: 000000a0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817254] iwlwifi 0000:00:1c.6: 000000c0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817262] iwlwifi 0000:00:1c.6: 000000e0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817270] iwlwifi 0000:00:1c.6: 00000100: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817279] iwlwifi 0000:00:1c.6: 00000120: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817287] iwlwifi 0000:00:1c.6: 00000140: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817295] iwlwifi 0000:00:1c.6: 00000160: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817303] iwlwifi 0000:00:1c.6: 00000180: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817311] iwlwifi 0000:00:1c.6: 000001a0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817319] iwlwifi 0000:00:1c.6: 000001c0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817341] iwlwifi 0000:00:1c.6: 000001e0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Sep 10 14:45:28 jupiter kernel: [63338.817346] iwlwifi 0000:00:1c.6: 00000200: ffffffff ffffffff ffffffff
----------
Sep 10 14:45:28 jupiter kernel: [63339.904678] iwlwifi 0000:04:00.0: Could not load the [0] uCode section
Sep 10 14:45:28 jupiter kernel: [63339.904684] iwlwifi 0000:04:00.0: Failed to start INIT ucode: -5
Sep 10 14:45:28 jupiter kernel: [63339.904685] iwlwifi 0000:04:00.0: Failed to run INIT ucode: -5
Sep 10 14:45:28 jupiter kernel: [63339.904686] iwlwifi 0000:04:00.0: Failed to start RT ucode: -5
Sep 10 14:45:28 jupiter kernel: [63339.904687] iwlwifi 0000:04:00.0: Collecting data: trigger 16 fired.
Sep 10 14:45:28 jupiter kernel: [63339.961017] 
------------
Sep 10 14:45:28 jupiter kernel: [63339.961023] WARNING: CPU: 3 PID: 32706 at drivers/net/wireless/intel/iwlwifi/mvm/../iwl-trans.h:1391 iwl_mvm_dump_lmac_error_log+0x4eb/0x540 [iwlmvm]
Sep 10 14:45:28 jupiter kernel: [63339.961023] Modules linked in: wacom hid_generic usbhid hid uinput acpi_call(OE) ctr ccm rfcomm cmac algif_hash algif_skcipher af_alg snd_seq_dummy snd_hrtimer snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device bnep btusb btrtl btbcm btintel bluetooth uvcvideo videobuf2_vmalloc jitterentropy_rng videobuf2_memops videobuf2_v4l2 drbg videobuf2_common videodev mc ansi_cprng ecdh_generic ecc nls_ascii nls_cp437 snd_hda_codec_hdmi vfat intel_rapl_msr snd_soc_skl intel_rapl_common fat snd_soc_hdac_hda intel_pmc_core_pltdrv snd_hda_codec_realtek intel_pmc_core snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_codec_generic snd_soc_acpi_intel_match snd_soc_acpi x86_pkg_temp_thermal snd_hda_intel intel_powerclamp snd_intel_dspcfg coretemp mei_hdcp mei_wdt soundwire_intel soundwire_generic_allocation ghash_clmulni_intel snd_soc_core snd_compress aesni_intel iwlmvm soundwire_cadence libaes crypto_simd mac80211 snd_hda_codec cryptd glue_helper libarc4 snd_hda_core rapl
Sep 10 14:45:28 jupiter kernel: [63339.961050]  intel_cstate snd_hwdep soundwire_bus intel_uncore snd_pcm_oss joydev iwlwifi snd_mixer_oss efi_pstore serio_raw pcspkr snd_pcm iTCO_wdt intel_pmc_bxt iTCO_vendor_support wmi_bmof intel_wmi_thunderbolt watchdog snd_timer ee1004 cfg80211 mei_me ucsi_acpi intel_xhci_usb_role_switch sg typec_ucsi roles mei intel_pch_thermal typec thinkpad_acpi nvram ledtrig_audio snd soundcore tpm_crb ac evdev rfkill tpm_tis tpm_tis_core tpm rng_core acpi_pad parport_pc ppdev lp parport fuse configfs efivarfs ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 crc32c_generic sd_mod t10_pi crc_t10dif crct10dif_generic uas usb_storage i915 i2c_algo_bit drm_kms_helper crct10dif_pclmul crct10dif_common xhci_pci crc32_pclmul e1000e cec ahci crc32c_intel libahci psmouse xhci_hcd libata drm ptp scsi_mod pps_core i2c_i801 usbcore i2c_smbus usb_common wmi battery video button
--------------
Sep 10 14:45:28 jupiter kernel: [63339.961214] iwlwifi 0000:04:00.0: HW error, resetting before reading
Sep 10 14:45:28 jupiter kernel: [63339.996772] iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
Sep 10 14:45:28 jupiter kernel: [63339.996774] iwlwifi 0000:04:00.0: Status: 0x00000000, count: 3072
Sep 10 14:45:28 jupiter kernel: [63339.996775] iwlwifi 0000:04:00.0: Loaded firmware version: 36.ad812ee0.0 8265-36.ucode
-------------
Sep 10 14:45:30 jupiter kernel: [63344.915798] iwlwifi 0000:04:00.0: Could not load the [0] uCode section
Sep 10 14:45:30 jupiter kernel: [63344.915814] iwlwifi 0000:04:00.0: Failed to start INIT ucode: -5
Sep 10 14:45:30 jupiter kernel: [63344.915815] iwlwifi 0000:04:00.0: Failed to run INIT ucode: -5
Sep 10 14:45:30 jupiter kernel: [63344.915816] iwlwifi 0000:04:00.0: Failed to start RT ucode: -5
Sep 10 14:45:30 jupiter kernel: [63344.915819] iwlwifi 0000:04:00.0: Collecting data: trigger 16 fired.
------------
Sep 10 14:45:34 jupiter kernel: [63348.625521] iwlwifi 0000:04:00.0: can't change power state from D3cold to D0 (config space inaccessible)
Sep 10 14:45:34 jupiter kernel: [63348.625564] iwlwifi 0000:04:00.0: can't change power state from D3hot to D0 (config space inaccessible)
Sep 10 14:45:34 jupiter kernel: [63348.625856] iwlwifi 0000:04:00.0: HW_REV=0xFFFFFFFF, PCI issues?
Sep 10 14:45:34 jupiter kernel: [63348.635076] iwlwifi: probe of 0000:04:00.0 failed with error -5

再起動後、iwlwifiはkern.logに表示されなくなりました。

ハードウェアの問題のようですが、もし私のカードを回復する方法がありましたら、本当にありがとうございます。