Public bug reported:
[Summary]
The Wi-Fi interface is missing on Gnome Settings, even through ifconfig command.
See below message from syslog for more details.
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.336194] iwlwifi 0000:00:14.3:
enabling device (0000 -> 0002)
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.416938] WARNING: CPU: 7 PID: 411 at
drivers/net/wireless/intel/iwlwifi/pcie/trans.c:2088
iwl_trans_pcie_grab_nic_access+0x1bd/0x1f0 [iwlwifi]
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.416938] Modules linked in:
snd_seq_device dell_smbios snd_timer dcdbas input_leds(+) intel_cstate(+)
serio_raw snd dell_wmi_descriptor fjes(-) wmi_bmof iwlwifi(+) soundcore
hid_sensor_gyro_3d mei_me cfg80211 hid_multitouch(+) mei hid_sensor_accel_3d
hid_sensor_als hid_sensor_trigger industrialio_triggered_buffer kfifo_buf
hid_sensor_iio_common industrialio processor_thermal_device ucsi_acpi
typec_ucsi intel_rapl_common cros_ec_ishtp intel_soc_dts_iosf cros_ec typec
int3403_thermal int340x_thermal_zone soc_button_array mac_hid intel_hid
int3400_thermal acpi_thermal_rel acpi_pad sparse_keymap acpi_tad sch_fq_codel
parport_pc ppdev lp parport ip_tables x_tables autofs4 btrfs blake2b_generic
zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor usbhid raid6_pq libcrc32c raid1 raid0 multipath linear dm_mirror
dm_region_hash dm_log hid_sensor_custom hid_sensor_hub intel_ishtp_loader
intel_ishtp_hid hid_generic i915 rtsx_pci_sdmmc i2c_algo_bit
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417001] RIP:
0010:iwl_trans_pcie_grab_nic_access+0x1bd/0x1f0 [iwlwifi]
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417027] iwl_pci_probe+0xf2/0x6d0
[iwlwifi]
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417062]
iwl_pci_register_driver+0x25/0x40 [iwlwifi]
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417074] iwl_drv_init+0x83/0x1000
[iwlwifi]
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417112] iwlwifi 0000:00:14.3:
iwlwifi transaction failed, dumping registers
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417113] iwlwifi 0000:00:14.3:
iwlwifi device config registers:
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417610] iwlwifi 0000:00:14.3:
00000000: a0f08086 00100400 02800020 00800000 5319c004 00000060 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417612] iwlwifi 0000:00:14.3:
00000020: 00000000 00000000 00000000 40708086 00000000 000000c8 00000000
000001ff
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417613] iwlwifi 0000:00:14.3:
00000040: 00928010 10000ec0 00100c10 00000000 00000000 00000000 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417615] iwlwifi 0000:00:14.3:
00000060: 00000000 00080812 00000405 00000000 00000000 00000000 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417616] iwlwifi 0000:00:14.3:
00000080: 800f0011 00002000 00003000 00000000 00000000 00000000 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417618] iwlwifi 0000:00:14.3:
000000a0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417620] iwlwifi 0000:00:14.3:
000000c0: 00000000 00000000 c823d001 0d000008 00804005 00000000 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417621] iwlwifi 0000:00:14.3:
000000e0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417623] iwlwifi 0000:00:14.3:
00000100: 16410018 00000000 00000000 00462031 00000000 00002000 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417624] iwlwifi 0000:00:14.3:
00000120: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417626] iwlwifi 0000:00:14.3:
00000140: 14c00000 ff000000 000000ff 00000000 00000000 0001001e 00481e1f
00000000
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417627] iwlwifi 0000:00:14.3:
iwlwifi device memory mapped registers:
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417884] iwlwifi 0000:00:14.3:
00000000: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
ffffffff
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.417886] iwlwifi 0000:00:14.3:
00000020: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
ffffffff
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.418247] iwlwifi 0000:00:14.3:
Direct firmware load for iwlwifi-QuZ-a0-hr-b0-52.ucode failed with error -2
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.418270] iwlwifi 0000:00:14.3:
Direct firmware load for iwlwifi-QuZ-a0-hr-b0-51.ucode failed with error -2
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.418284] iwlwifi 0000:00:14.3:
Direct firmware load for iwlwifi-QuZ-a0-hr-b0-50.ucode failed with error -2
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.418299] iwlwifi 0000:00:14.3:
Direct firmware load for iwlwifi-QuZ-a0-hr-b0-49.ucode failed with error -2
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.419744] iwlwifi 0000:00:14.3:
TLV_FW_FSEQ_VERSION: FSEQ Version: 43.2.23.17
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.419753] iwlwifi 0000:00:14.3: Found
debug destination: EXTERNAL_DRAM
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.419754] iwlwifi 0000:00:14.3: Found
debug configuration: 0
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.420038] iwlwifi 0000:00:14.3:
loaded firmware version 48.4fa0041f.0 QuZ-a0-hr-b0-48.ucode op_mode iwlmvm
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.550549] iwlwifi 0000:00:14.3:
Detected Intel(R) Wi-Fi 6 AX201 160MHz, REV=0x354
Nov 12 05:01:05 u-Latitude-9520 kernel: [ 4.550651] iwlwifi 0000:00:14.3:
Error, can not clear persistence bit
[Steps to reproduce]
1. Power On system and boot into OS.
2. Validate the Wi-Fi interface is works via below steps.
- Launch Gnome Wi-Fi Settings page to make sure the Wi-Fi interface works.
- Launch Terminal, check Wi-Fi interface works through ifconfig command.
(If the Wi-Fi interface works, continue below steps)
3. Power cycle the system and check Wi-Fi interface again.
[Expected result]
The WiFi interface is listed in Gnome Settings page.
[Actual result]
No WiFi interface in Gnome Settings page.
[Failure rate]
3/74
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-oem-5.6 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux-oem-5.6 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1904509
Title:
Intel(R) Wi-Fi 6 AX201 160MHz [8086:a0f0] subsystem [8086:4070] fails
to register device: can not clear persistence bit
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