Having same issues with x1 carbon 6th gen. Using b/firmware/iwlwifi-8265-36.ucode right now. The 

Before the crash i have:

❯ ethtool -i wlp2s0
driver: iwlwifi
version: 5.3.0-7629-generic
firmware-version: 36.77d01142.0

After the crash:

❯ dmesg | grep iwlwifi

[    4.082948] iwlwifi 0000:02:00.0: Found debug destination: EXTERNAL_DRAM
[    4.082950] iwlwifi 0000:02:00.0: Found debug configuration: 0
[    4.083454] iwlwifi 0000:02:00.0: loaded firmware version 36.77d01142.0 op_mode iwlmvm
[    4.152591] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230
[    4.161466] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    4.161884] iwlwifi 0000:02:00.0: Allocated 0x00400000 bytes for firmware monitor.
[    4.226869] iwlwifi 0000:02:00.0: base HW address: <OMMITED>
[    4.307274] iwlwifi 0000:02:00.0 wlp2s0: renamed from wlan0
[    5.892975] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    6.025759] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[    6.094195] iwlwifi 0000:02:00.0: FW already configured (0) - re-configuring
[   19.943463] iwlwifi 0000:02:00.0: Error sending SCAN_ABORT_UMAC: time out after 2000ms.
[   19.943475] iwlwifi 0000:02:00.0: Current CMD queue read_ptr 54 write_ptr 55
[   19.960932] WARNING: CPU: 4 PID: 1057 at drivers/net/wireless/intel/iwlwifi/pcie/trans.c:2015 iwl_trans_pcie_grab_nic_access+0x1f9/0x230 [iwlwifi]
[   19.960933] Modules linked in: mei_hdcp aufs overlay binfmt_misc dm_crypt nls_iso8859_1 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match intel_rapl_msr snd_soc_acpi iwlmvm snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic snd_compress mac80211 ac97_bus snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp libarc4 coretemp snd_hda_intel snd_seq_midi snd_seq_midi_event snd_hda_codec kvm_intel snd_hda_core snd_rawmidi snd_hwdep btusb kvm uvcvideo videobuf2_vmalloc videobuf2_memops joydev videobuf2_v4l2 btrtl btbcm input_leds btintel irqbypass intel_cstate bluetooth snd_seq snd_pcm r8188eu(C) serio_raw iwlwifi videobuf2_common wmi_bmof intel_xhci_usb_role_switch intel_rapl_perf thinkpad_acpi lib80211 videodev intel_wmi_thunderbolt mei_me processor_thermal_device ecdh_generic nvram intel_rapl_common mc intel_pch_thermal intel_soc_dts_iosf mei roles ecc ledtrig_audio cfg80211 ucsi_acpi typec_ucsi
[   19.960969] RIP: 0010:iwl_trans_pcie_grab_nic_access+0x1f9/0x230 [iwlwifi]
[   19.960980]  iwl_write_prph+0x3e/0x90 [iwlwifi]
[   19.960983]  iwl_force_nmi+0x53/0x60 [iwlwifi]
[   19.960987]  iwl_trans_pcie_sync_nmi+0x1f1/0x260 [iwlwifi]
[   19.960990]  iwl_pcie_send_hcmd_sync+0x3ca/0x4b0 [iwlwifi]
[   19.960996]  iwl_trans_pcie_send_hcmd+0x34/0xe0 [iwlwifi]
[   19.961002]  iwl_trans_send_cmd+0x5d/0xc0 [iwlwifi]
[   19.961089] iwlwifi 0000:02:00.0: iwlwifi transaction failed, dumping registers
[   19.961090] iwlwifi 0000:02:00.0: iwlwifi device config registers:
[   19.961270] iwlwifi 0000:02:00.0: 00000000: 24fd8086 00100000 02800078 00000000 00000004 00000000 00000000 00000000
[   19.961271] iwlwifi 0000:02:00.0: 00000020: 00000000 00000000 00000000 00108086 00000000 000000c8 00000000 00000100
[   19.961272] iwlwifi 0000:02:00.0: 00000040: 00020010 10008ec0 001b0c10 0045e811 10110000 00000000 00000000 00000000
[   19.961273] iwlwifi 0000:02:00.0: 00000060: 00000000 00080812 00000005 00000000 00010001 00000000 00000000 00000000
[   19.961274] iwlwifi 0000:02:00.0: 00000080: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961275] iwlwifi 0000:02:00.0: 000000a0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961276] iwlwifi 0000:02:00.0: 000000c0: 00000000 00000000 c823d001 0d000000 00804005 00000000 00000000 00000000
[   19.961277] iwlwifi 0000:02:00.0: 000000e0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961279] iwlwifi 0000:02:00.0: 00000100: 14010001 00100000 00000000 00462031 000030c1 00002000 00000014 40000001
[   19.961280] iwlwifi 0000:02:00.0: 00000120: 0000000f ee200460 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961281] iwlwifi 0000:02:00.0: 00000140: 14c10003 ff9a0344 a4c3f0ff 15410018 00000000 0001001e 00481e1f 00000000
[   19.961282] iwlwifi 0000:02:00.0: iwlwifi device memory mapped registers:
[   19.961308] iwlwifi 0000:02:00.0: 00000000: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
[   19.961309] iwlwifi 0000:02:00.0: 00000020: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
[   19.961312] iwlwifi 0000:02:00.0: iwlwifi device AER capability structure:
[   19.961333] iwlwifi 0000:02:00.0: 00000000: 14010001 00100000 00000000 00462031 000030c1 00002000 00000014 40000001
[   19.961334] iwlwifi 0000:02:00.0: 00000020: 0000000f ee200460 00000000
[   19.961335] iwlwifi 0000:02:00.0: iwlwifi parent port (0000:00:1c.0) config registers:
[   19.961401] iwlwifi 0000:00:1c.0: 00000000: 9d108086 00100407 060400f1 00810000 00000000 00000000 00020200 200000f0
[   19.961402] iwlwifi 0000:00:1c.0: 00000020: ee20ee20 0001fff1 00000000 00000000 00000000 00000040 00000000 000201ff
[   19.961404] iwlwifi 0000:00:1c.0: 00000040: 01428010 00008001 00110000 01724c13 70110042 0004b200 01480000 00000008
[   19.961405] iwlwifi 0000:00:1c.0: 00000060: 00000000 00000837 00000000 0000000e 00010003 00000000 00000000 00000000
[   19.961406] iwlwifi 0000:00:1c.0: 00000080: 00019005 fee00238 00000000 00000000 0000a00d 225c17aa 00000000 00000000
[   19.961407] iwlwifi 0000:00:1c.0: 000000a0: c8030001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961408] iwlwifi 0000:00:1c.0: 000000c0: 00000000 00000000 00000000 00000000 07001001 00001842 099e0008 00000000
[   19.961409] iwlwifi 0000:00:1c.0: 000000e0: 00f3f700 8c548c54 00128006 00000000 00000150 40000300 08410fb3 01000004
[   19.961410] iwlwifi 0000:00:1c.0: 00000100: 14010001 00000000 00010000 00060011 000031c1 00002000 00000000 00000000
[   19.961411] iwlwifi 0000:00:1c.0: 00000120: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961412] iwlwifi 0000:00:1c.0: 00000140: 2001000d 0000000f 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961413] iwlwifi 0000:00:1c.0: 00000160: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961414] iwlwifi 0000:00:1c.0: 00000180: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961415] iwlwifi 0000:00:1c.0: 000001a0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961416] iwlwifi 0000:00:1c.0: 000001c0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961417] iwlwifi 0000:00:1c.0: 000001e0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   19.961418] iwlwifi 0000:00:1c.0: 00000200: 2201001e 0039281f 40a0280f
[   19.961419] iwlwifi 0000:02:00.0: iwlwifi root port (0000:00:1c.0) AER cap structure:
[   19.961426] iwlwifi 0000:00:1c.0: 00000000: 14010001 00000000 00010000 00060011 000031c1 00002000 00000000 00000000
[   19.961427] iwlwifi 0000:00:1c.0: 00000020: 00000000 00000000 00000000 00000000 00000000 00000000
[   19.978727] WARNING: CPU: 4 PID: 1057 at drivers/net/wireless/intel/iwlwifi/mvm/../iwl-trans.h:1201 iwl_mvm_dump_lmac_error_log.cold+0xc/0x13 [iwlmvm]
[   19.978728] Modules linked in: mei_hdcp aufs overlay binfmt_misc dm_crypt nls_iso8859_1 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match intel_rapl_msr snd_soc_acpi iwlmvm snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic snd_compress mac80211 ac97_bus snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp libarc4 coretemp snd_hda_intel snd_seq_midi snd_seq_midi_event snd_hda_codec kvm_intel snd_hda_core snd_rawmidi snd_hwdep btusb kvm uvcvideo videobuf2_vmalloc videobuf2_memops joydev videobuf2_v4l2 btrtl btbcm input_leds btintel irqbypass intel_cstate bluetooth snd_seq snd_pcm r8188eu(C) serio_raw iwlwifi videobuf2_common wmi_bmof intel_xhci_usb_role_switch intel_rapl_perf thinkpad_acpi lib80211 videodev intel_wmi_thunderbolt mei_me processor_thermal_device ecdh_generic nvram intel_rapl_common mc intel_pch_thermal intel_soc_dts_iosf mei roles ecc ledtrig_audio cfg80211 ucsi_acpi typec_ucsi
[   19.978768]  ? iwl_trans_pcie_write8+0x20/0x20 [iwlwifi]
[   19.978782]  iwl_trans_pcie_sync_nmi+0xbf/0x260 [iwlwifi]
[   19.978785]  iwl_pcie_send_hcmd_sync+0x3ca/0x4b0 [iwlwifi]
[   19.978790]  iwl_trans_pcie_send_hcmd+0x34/0xe0 [iwlwifi]
[   19.978795]  iwl_trans_send_cmd+0x5d/0xc0 [iwlwifi]
[   19.978871] iwlwifi 0000:02:00.0: HW error, resetting before reading
[   20.002405] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[   20.002408] iwlwifi 0000:02:00.0: Status: 0x00000080, count: -1153843728
[   20.002410] iwlwifi 0000:02:00.0: Loaded firmware version: 36.77d01142.0
[   20.002411] iwlwifi 0000:02:00.0: 0xFFFFFFFF | ADVANCED_SYSASSERT          
[   20.002412] iwlwifi 0000:02:00.0: 0x000004A3 | trm_hw_status0
[   20.002413] iwlwifi 0000:02:00.0: 0x00000000 | trm_hw_status1
[   20.002414] iwlwifi 0000:02:00.0: 0xC0C7B480 | branchlink2
[   20.002415] iwlwifi 0000:02:00.0: 0xFFFFFFFF | interruptlink1
[   20.002415] iwlwifi 0000:02:00.0: 0x00000CD9 | interruptlink2
[   20.002416] iwlwifi 0000:02:00.0: 0x00000000 | data1
[   20.002417] iwlwifi 0000:02:00.0: 0x00000002 | data2
[   20.002417] iwlwifi 0000:02:00.0: 0x00000000 | data3
[   20.002418] iwlwifi 0000:02:00.0: 0x00000246 | beacon time
[   20.002419] iwlwifi 0000:02:00.0: 0x00000000 | tsf low
[   20.002419] iwlwifi 0000:02:00.0: 0x00000246 | tsf hi
[   20.002420] iwlwifi 0000:02:00.0: 0x00000000 | time gp1
[   20.002421] iwlwifi 0000:02:00.0: 0xFFFFFF13 | time gp2
[   20.002422] iwlwifi 0000:02:00.0: 0xFFFFFFFF | uCode revision type
[   20.002422] iwlwifi 0000:02:00.0: 0xBA29F985 | uCode version major
[   20.002423] iwlwifi 0000:02:00.0: 0xFFFFFFFF | uCode version minor
[   20.002424] iwlwifi 0000:02:00.0: 0x00000010 | hw version
[   20.002425] iwlwifi 0000:02:00.0: 0x00000000 | board version
[   20.002425] iwlwifi 0000:02:00.0: 0xFFFFA656 | hcmd
[   20.002426] iwlwifi 0000:02:00.0: 0x00000018 | isr0
[   20.002427] iwlwifi 0000:02:00.0: 0x00000000 | isr1
[   20.002427] iwlwifi 0000:02:00.0: 0x00000246 | isr2
[   20.002428] iwlwifi 0000:02:00.0: 0x00000000 | isr3
[   20.002429] iwlwifi 0000:02:00.0: 0xC0CA44E2 | isr4
[   20.002429] iwlwifi 0000:02:00.0: 0xFFFFFFFF | last cmd Id
[   20.002430] iwlwifi 0000:02:00.0: 0x80997788 | wait_event
[   20.002431] iwlwifi 0000:02:00.0: 0xFFFFA656 | l2p_control
[   20.002431] iwlwifi 0000:02:00.0: 0x00000028 | l2p_duration
[   20.002432] iwlwifi 0000:02:00.0: 0xFFFF8D3F | l2p_mhvalid
[   20.002433] iwlwifi 0000:02:00.0: 0x80997808 | l2p_addr_match
[   20.002434] iwlwifi 0000:02:00.0: 0xFFFFA656 | lmpm_pmg_sel
[   20.002434] iwlwifi 0000:02:00.0: 0x809977A8 | timestamp
[   20.002435] iwlwifi 0000:02:00.0: 0xFFFFA656 | flow_handler
[   20.019706] iwlwifi 0000:02:00.0: 0xC0CA44E2 | ADVANCED_SYSASSERT
[   20.019707] iwlwifi 0000:02:00.0: 0xFFFFFFFF | umac branchlink1
[   20.019708] iwlwifi 0000:02:00.0: 0x80997788 | umac branchlink2
[   20.019710] iwlwifi 0000:02:00.0: 0xFFFFA656 | umac interruptlink1
[   20.019711] iwlwifi 0000:02:00.0: 0x00000028 | umac interruptlink2
[   20.019712] iwlwifi 0000:02:00.0: 0xFFFF8D3F | umac data1
[   20.019712] iwlwifi 0000:02:00.0: 0x80997808 | umac data2
[   20.019713] iwlwifi 0000:02:00.0: 0xFFFFA656 | umac data3
[   20.019714] iwlwifi 0000:02:00.0: 0x809977A8 | umac major
[   20.019715] iwlwifi 0000:02:00.0: 0xFFFFA656 | umac minor
[   20.019715] iwlwifi 0000:02:00.0: 0xB9CF2D00 | frame pointer
[   20.019716] iwlwifi 0000:02:00.0: 0xA86FD98A | stack pointer
[   20.019717] iwlwifi 0000:02:00.0: 0x44FA1E28 | last host cmd
[   20.019717] iwlwifi 0000:02:00.0: 0xFFFF8D3F | isr status reg
[   20.036990] iwlwifi 0000:02:00.0: Collecting data: trigger 2 fired.
[   22.637591] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[   22.741193] iwlwifi 0000:02:00.0: Could not load the [0] uCode section
[   22.741197] iwlwifi 0000:02:00.0: Failed to start INIT ucode: -5
[   22.741198] iwlwifi 0000:02:00.0: Failed to run INIT ucode: -5
[   22.741199] iwlwifi 0000:02:00.0: Failed to start RT ucode: -5
[   22.741201] iwlwifi 0000:02:00.0: Collecting data: trigger 16 fired.
[   22.775768] WARNING: CPU: 4 PID: 61 at drivers/net/wireless/intel/iwlwifi/mvm/../iwl-trans.h:1201 iwl_mvm_dump_lmac_error_log.cold+0xc/0x13 [iwlmvm]
[   22.775768] Modules linked in: mei_hdcp aufs overlay binfmt_misc dm_crypt nls_iso8859_1 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match intel_rapl_msr snd_soc_acpi iwlmvm snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic snd_compress mac80211 ac97_bus snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp libarc4 coretemp snd_hda_intel snd_seq_midi snd_seq_midi_event snd_hda_codec kvm_intel snd_hda_core snd_rawmidi snd_hwdep btusb kvm uvcvideo videobuf2_vmalloc videobuf2_memops joydev videobuf2_v4l2 btrtl btbcm input_leds btintel irqbypass intel_cstate bluetooth snd_seq snd_pcm r8188eu(C) serio_raw iwlwifi videobuf2_common wmi_bmof intel_xhci_usb_role_switch intel_rapl_perf thinkpad_acpi lib80211 videodev intel_wmi_thunderbolt mei_me processor_thermal_device ecdh_generic nvram intel_rapl_common mc intel_pch_thermal intel_soc_dts_iosf mei roles ecc ledtrig_audio cfg80211 ucsi_acpi typec_ucsi
[   22.775842]  ? iwl_trans_pcie_write8+0x20/0x20 [iwlwifi]
[   22.775850]  ? iwl_trans_pcie_grab_nic_access+0x11f/0x230 [iwlwifi]
[   22.775864]  iwl_trans_pcie_sync_nmi+0xbf/0x260 [iwlwifi]
[   22.775869]  ? iwl_fw_dbg_collect_desc+0x96/0x120 [iwlwifi]
[   22.775874]  iwl_fw_dbg_error_collect+0x75/0xb0 [iwlwifi]
[   22.775943] iwlwifi 0000:02:00.0: HW error, resetting before reading
[   22.799638] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[   22.799641] iwlwifi 0000:02:00.0: Status: 0x00000010, count: 4
[   22.799642] iwlwifi 0000:02:00.0: Loaded firmware version: 36.77d01142.0
[   22.799643] iwlwifi 0000:02:00.0: 0x00000000 | ADVANCED_SYSASSERT          
[   22.799644] iwlwifi 0000:02:00.0: 0x05FC0C8C | trm_hw_status0
[   22.799645] iwlwifi 0000:02:00.0: 0x0000000F | trm_hw_status1
[   22.799646] iwlwifi 0000:02:00.0: 0xC0C7B480 | branchlink2
[   22.799646] iwlwifi 0000:02:00.0: 0xFFFFFFFF | interruptlink1
[   22.799647] iwlwifi 0000:02:00.0: 0x00000004 | interruptlink2
[   22.799648] iwlwifi 0000:02:00.0: 0x00000000 | data1
[   22.799648] iwlwifi 0000:02:00.0: 0x00000002 | data2
[   22.799649] iwlwifi 0000:02:00.0: 0x00000000 | data3
[   22.799650] iwlwifi 0000:02:00.0: 0x00000246 | beacon time
[   22.799651] iwlwifi 0000:02:00.0: 0x00000000 | tsf low
[   22.799651] iwlwifi 0000:02:00.0: 0x00000246 | tsf hi
[   22.799652] iwlwifi 0000:02:00.0: 0x00000000 | time gp1
[   22.799653] iwlwifi 0000:02:00.0: 0xFFFFFF13 | time gp2
[   22.799653] iwlwifi 0000:02:00.0: 0xFFFFFFFF | uCode revision type
[   22.799654] iwlwifi 0000:02:00.0: 0xBA29F985 | uCode version major
[   22.799655] iwlwifi 0000:02:00.0: 0xFFFFFFFF | uCode version minor
[   22.799656] iwlwifi 0000:02:00.0: 0x00000010 | hw version
[   22.799656] iwlwifi 0000:02:00.0: 0x00000000 | board version
[   22.799657] iwlwifi 0000:02:00.0: 0xFFFFA656 | hcmd
[   22.799658] iwlwifi 0000:02:00.0: 0x00000018 | isr0
[   22.799658] iwlwifi 0000:02:00.0: 0x00000000 | isr1
[   22.799659] iwlwifi 0000:02:00.0: 0x00000246 | isr2
[   22.799660] iwlwifi 0000:02:00.0: 0x00000000 | isr3
[   22.799660] iwlwifi 0000:02:00.0: 0x802C3BD0 | isr4
[   22.799661] iwlwifi 0000:02:00.0: 0xFFFFA656 | last cmd Id
[   22.799662] iwlwifi 0000:02:00.0: 0xC0C7DFCF | wait_event
[   22.799662] iwlwifi 0000:02:00.0: 0xFFFFFFFF | l2p_control
[   22.799663] iwlwifi 0000:02:00.0: 0x44D70018 | l2p_duration
[   22.799664] iwlwifi 0000:02:00.0: 0xFFFF8D3F | l2p_mhvalid
[   22.799665] iwlwifi 0000:02:00.0: 0x44D70018 | l2p_addr_match
[   22.799665] iwlwifi 0000:02:00.0: 0xFFFF8D3F | lmpm_pmg_sel
[   22.799666] iwlwifi 0000:02:00.0: 0x00A01C30 | timestamp
[   22.799667] iwlwifi 0000:02:00.0: 0x00000000 | flow_handler
[   22.816935] iwlwifi 0000:02:00.0: 0x802C3BD0 | ADVANCED_SYSASSERT
[   22.816936] iwlwifi 0000:02:00.0: 0xFFFFA656 | umac branchlink1
[   22.816937] iwlwifi 0000:02:00.0: 0xC0C7DFCF | umac branchlink2
[   22.816937] iwlwifi 0000:02:00.0: 0xFFFFFFFF | umac interruptlink1
[   22.816938] iwlwifi 0000:02:00.0: 0x44D70018 | umac interruptlink2
[   22.816939] iwlwifi 0000:02:00.0: 0xFFFF8D3F | umac data1
[   22.816940] iwlwifi 0000:02:00.0: 0x44D70018 | umac data2
[   22.816940] iwlwifi 0000:02:00.0: 0xFFFF8D3F | umac data3
[   22.816941] iwlwifi 0000:02:00.0: 0x00A01C30 | umac major
[   22.816942] iwlwifi 0000:02:00.0: 0x00000000 | umac minor
[   22.816942] iwlwifi 0000:02:00.0: 0x1BEEA100 | frame pointer
[   22.816943] iwlwifi 0000:02:00.0: 0x9F12B417 | stack pointer
[   22.816944] iwlwifi 0000:02:00.0: 0x44FA1E28 | last host cmd
[   22.816944] iwlwifi 0000:02:00.0: 0xFFFF8D3F | isr status reg
[   22.834213] iwlwifi 0000:02:00.0: Firmware error during reconfiguration - reprobe!
[   22.834216] iwlwifi 0000:02:00.0: Firmware not running - cannot dump error
[   24.625833] Modules linked in: mei_hdcp aufs overlay binfmt_misc dm_crypt nls_iso8859_1 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match intel_rapl_msr snd_soc_acpi iwlmvm snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic snd_compress mac80211 ac97_bus snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp libarc4 coretemp snd_hda_intel snd_seq_midi snd_seq_midi_event snd_hda_codec kvm_intel snd_hda_core snd_rawmidi snd_hwdep btusb kvm uvcvideo videobuf2_vmalloc videobuf2_memops joydev videobuf2_v4l2 btrtl btbcm input_leds btintel irqbypass intel_cstate bluetooth snd_seq snd_pcm r8188eu(C) serio_raw iwlwifi videobuf2_common wmi_bmof intel_xhci_usb_role_switch intel_rapl_perf thinkpad_acpi lib80211 videodev intel_wmi_thunderbolt mei_me processor_thermal_device ecdh_generic nvram intel_rapl_common mc intel_pch_thermal intel_soc_dts_iosf mei roles ecc ledtrig_audio cfg80211 ucsi_acpi typec_ucsi
[   24.625936] Modules linked in: mei_hdcp aufs overlay binfmt_misc dm_crypt nls_iso8859_1 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match intel_rapl_msr snd_soc_acpi iwlmvm snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic snd_compress mac80211 ac97_bus snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp libarc4 coretemp snd_hda_intel snd_seq_midi snd_seq_midi_event snd_hda_codec kvm_intel snd_hda_core snd_rawmidi snd_hwdep btusb kvm uvcvideo videobuf2_vmalloc videobuf2_memops joydev videobuf2_v4l2 btrtl btbcm input_leds btintel irqbypass intel_cstate bluetooth snd_seq snd_pcm r8188eu(C) serio_raw iwlwifi videobuf2_common wmi_bmof intel_xhci_usb_role_switch intel_rapl_perf thinkpad_acpi lib80211 videodev intel_wmi_thunderbolt mei_me processor_thermal_device ecdh_generic nvram intel_rapl_common mc intel_pch_thermal intel_soc_dts_iosf mei roles ecc ledtrig_audio cfg80211 ucsi_acpi typec_ucsi
[   24.626079] Modules linked in: mei_hdcp aufs overlay binfmt_misc dm_crypt nls_iso8859_1 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match intel_rapl_msr snd_soc_acpi iwlmvm snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic snd_compress mac80211 ac97_bus snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp libarc4 coretemp snd_hda_intel snd_seq_midi snd_seq_midi_event snd_hda_codec kvm_intel snd_hda_core snd_rawmidi snd_hwdep btusb kvm uvcvideo videobuf2_vmalloc videobuf2_memops joydev videobuf2_v4l2 btrtl btbcm input_leds btintel irqbypass intel_cstate bluetooth snd_seq snd_pcm r8188eu(C) serio_raw iwlwifi videobuf2_common wmi_bmof intel_xhci_usb_role_switch intel_rapl_perf thinkpad_acpi lib80211 videodev intel_wmi_thunderbolt mei_me processor_thermal_device ecdh_generic nvram intel_rapl_common mc intel_pch_thermal intel_soc_dts_iosf mei roles ecc ledtrig_audio cfg80211 ucsi_acpi typec_ucsi
[   24.626189] Modules linked in: mei_hdcp aufs overlay binfmt_misc dm_crypt nls_iso8859_1 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match intel_rapl_msr snd_soc_acpi iwlmvm snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic snd_compress mac80211 ac97_bus snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp libarc4 coretemp snd_hda_intel snd_seq_midi snd_seq_midi_event snd_hda_codec kvm_intel snd_hda_core snd_rawmidi snd_hwdep btusb kvm uvcvideo videobuf2_vmalloc videobuf2_memops joydev videobuf2_v4l2 btrtl btbcm input_leds btintel irqbypass intel_cstate bluetooth snd_seq snd_pcm r8188eu(C) serio_raw iwlwifi videobuf2_common wmi_bmof intel_xhci_usb_role_switch intel_rapl_perf thinkpad_acpi lib80211 videodev intel_wmi_thunderbolt mei_me processor_thermal_device ecdh_generic nvram intel_rapl_common mc intel_pch_thermal intel_soc_dts_iosf mei roles ecc ledtrig_audio cfg80211 ucsi_acpi typec_ucsi
[   24.808302] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
[   24.808560] iwlwifi 0000:02:00.0: HW_REV=0xFFFFFFFF, PCI issues?
[   24.827744] iwlwifi: probe of 0000:02:00.0 failed with error -5

Found some  possible related issues:

- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1846264
- https://bugzilla.kernel.org/show_bug.cgi?id=204613
- https://askubuntu.com/questions/1206816/wireless-not-showing-wifi-adapter-not-found-at-all-on-ubuntu-19-10-on-dell-pre/1206837