*** This bug is a duplicate of bug 1808389 ***
    https://bugs.launchpad.net/bugs/1808389

I was hoping a firmware update would solve the problem, but now it is
significantly worse. The crashes happen so frequently that the machine
locks up for a minute or two. Even the capslock light on the keyboard
becomes unresponsive. This usually happens just after boot or coming out
of suspend, but not always.

$ uname -a
Linux evenedric 5.3.0-19-generic #20-Ubuntu SMP Fri Oct 18 09:04:39 UTC 2019 
x86_64 x86_64 x86_64 GNU/Linux

$ fwupdmgr get-devices 
20FBCTO1WW System Firmware
  DeviceId:             [redacted]
  Guid:                 [redacted]
  Plugin:               uefi
  Flags:                
internal|updatable|require-ac|supported|registered|needs-reboot
  Version:              0.1.42
  VersionLowest:        0.1.31
  VersionFormat:        triplet
  Icon:                 computer
  Created:              2019-11-12

UEFI Device Firmware
  DeviceId:             [redacted]
  Guid:                 [redacted]
  Plugin:               uefi
  Flags:                
internal|updatable|require-ac|supported|registered|needs-reboot
  Version:              184.65.3590
  VersionLowest:        0.0.1
  VersionFormat:        triplet
  Icon:                 audio-card
  Created:              2019-11-12

UEFI Device Firmware
  DeviceId:             [redacted]
  Guid:                 [redacted]
  Plugin:               uefi
  Flags:                
internal|updatable|require-ac|supported|registered|needs-reboot
  Version:              0.1.12
  VersionLowest:        0.0.1
  VersionFormat:        triplet
  Icon:                 audio-card
  Created:              2019-11-12
  UpdateState:          success

$ iw reg get
global
country US: DFS-FCC
        (2402 - 2472 @ 40), (N/A, 30), (N/A)
        (5170 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW
        (5250 - 5330 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW
        (5490 - 5730 @ 160), (N/A, 23), (0 ms), DFS
        (5735 - 5835 @ 80), (N/A, 30), (N/A)
        (57240 - 63720 @ 2160), (N/A, 40), (N/A)

phy#0 (self-managed)
country 00: DFS-UNSET
        (2402 - 2437 @ 40), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-80MHZ, 
NO-160MHZ
        (2422 - 2462 @ 40), (6, 22), (N/A), AUTO-BW, NO-80MHZ, NO-160MHZ
        (2447 - 2482 @ 40), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-80MHZ, 
NO-160MHZ
        (5170 - 5190 @ 80), (6, 22), (N/A), NO-OUTDOOR, AUTO-BW, IR-CONCURRENT, 
NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
        (5190 - 5210 @ 80), (6, 22), (N/A), NO-OUTDOOR, AUTO-BW, IR-CONCURRENT, 
NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
        (5210 - 5230 @ 80), (6, 22), (N/A), NO-OUTDOOR, AUTO-BW, IR-CONCURRENT, 
NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
        (5230 - 5250 @ 80), (6, 22), (N/A), NO-OUTDOOR, AUTO-BW, IR-CONCURRENT, 
NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
        (5250 - 5270 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, 
NO-160MHZ, PASSIVE-SCAN
        (5270 - 5290 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, 
NO-160MHZ, PASSIVE-SCAN
        (5290 - 5310 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, 
NO-160MHZ, PASSIVE-SCAN
        (5310 - 5330 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, 
NO-160MHZ, PASSIVE-SCAN
        (5490 - 5510 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, 
NO-160MHZ, PASSIVE-SCAN
        (5510 - 5530 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, 
NO-160MHZ, PASSIVE-SCAN
        (5530 - 5550 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, 
NO-160MHZ, PASSIVE-SCAN
        (5550 - 5570 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, 
NO-160MHZ, PASSIVE-SCAN
        (5570 - 5590 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, 
NO-160MHZ, PASSIVE-SCAN
        (5590 - 5610 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, 
NO-160MHZ, PASSIVE-SCAN
        (5610 - 5630 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, 
NO-160MHZ, PASSIVE-SCAN
        (5630 - 5650 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, 
NO-160MHZ, PASSIVE-SCAN
        (5650 - 5670 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, 
NO-160MHZ, PASSIVE-SCAN
        (5670 - 5690 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, 
NO-160MHZ, PASSIVE-SCAN
        (5690 - 5710 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, 
NO-160MHZ, PASSIVE-SCAN
        (5710 - 5730 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, 
NO-160MHZ, PASSIVE-SCAN
        (5735 - 5755 @ 80), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, 
NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
        (5755 - 5775 @ 80), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, 
NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
        (5775 - 5795 @ 80), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, 
NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
        (5795 - 5815 @ 80), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, 
NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
        (5815 - 5835 @ 20), (6, 22), (N/A), AUTO-BW, IR-CONCURRENT, 
NO-HT40MINUS, NO-HT40PLUS, NO-80MHZ, NO-160MHZ, PASSIVE-SCAN



[  439.402427] ------------[ cut here ]------------
[  439.402469] WARNING: CPU: 3 PID: 157 at 
drivers/net/wireless/intel/iwlwifi/mvm/scan.c:1874 
iwl_mvm_rx_umac_scan_complete_notif.cold+0xc/0x13 [iwlmvm]
[  439.402470] Modules linked in: ccm rfcomm xt_MASQUERADE nf_conntrack_netlink 
nfnetlink xfrm_user xfrm_algo iptable_nat xt_addrtype iptable_filter bpfilter 
xt_conntrack nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c 
br_netfilter bridge stp llc aufs cmac bnep nls_iso8859_1 intel_rapl_msr 
snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core mei_hdcp snd_soc_skl_ipc 
snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match 
snd_soc_acpi snd_hda_codec_conexant snd_hda_codec_generic snd_soc_core 
snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_hda_codec 
snd_hda_core snd_hwdep intel_rapl_common snd_pcm x86_pkg_temp_thermal 
intel_powerclamp iwlmvm coretemp mac80211 kvm_intel snd_seq_midi libarc4 
snd_seq_midi_event kvm uvcvideo snd_rawmidi btusb btrtl irqbypass btbcm 
videobuf2_vmalloc btintel videobuf2_memops iwlwifi intel_cstate videobuf2_v4l2 
intel_rapl_perf snd_seq input_leds joydev wmi_bmof videobuf2_common bluetooth 
hid_sensor_accel_3d snd_seq_device videodev
[  439.402498]  hid_sensor_trigger industrialio_triggered_buffer thinkpad_acpi 
serio_raw sparse_keymap mc kfifo_buf snd_timer ecdh_generic ecc 
hid_sensor_iio_common nvram ledtrig_audio industrialio cfg80211 
intel_xhci_usb_role_switch snd roles rtsx_pci_ms mei_me intel_pch_thermal 
memstick mei cros_ec_ishtp cros_ec_core soundcore mac_hid sch_fq_codel 
parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_sensor_custom 
hid_sensor_hub hid_generic intel_ishtp_loader intel_ishtp_hid hid 
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel rtsx_pci_sdmmc i915 nvme 
aesni_intel i2c_algo_bit drm_kms_helper aes_x86_64 syscopyarea crypto_simd 
e1000e psmouse sysfillrect nvme_core cryptd sysimgblt rtsx_pci fb_sys_fops 
glue_helper i2c_i801 intel_ish_ipc intel_ishtp drm wmi video
[  439.402526] CPU: 3 PID: 157 Comm: kworker/3:2 Tainted: G        W         
5.3.0-19-generic #20-Ubuntu
[  439.402527] Hardware name: LENOVO 20FBCTO1WW/20FBCTO1WW, BIOS N1FET68W (1.42 
) 03/13/2019
[  439.402535] Workqueue: events iwl_mvm_async_handlers_wk [iwlmvm]
[  439.402545] RIP: 0010:iwl_mvm_rx_umac_scan_complete_notif.cold+0xc/0x13 
[iwlmvm]
[  439.402547] Code: 48 c7 c7 00 f9 bf c0 e8 df 9c 11 c6 0f 0b 49 8b 47 10 44 
8b a0 9c 00 00 00 e9 a2 3e fe ff 48 c7 c7 00 f9 bf c0 e8 c1 9c 11 c6 <0f> 0b e9 
dc 43 fe ff 48 c7 c7 00 f9 bf c0 e8 ae 9c 11 c6 0f 0b 41
[  439.402547] RSP: 0018:ffffa1810027fdd0 EFLAGS: 00010246
[  439.402549] RAX: 0000000000000024 RBX: ffff938887bce040 RCX: 0000000000000006
[  439.402549] RDX: 0000000000000000 RSI: 0000000000000082 RDI: ffff938891397440
[  439.402550] RBP: ffffa1810027fe08 R08: 000000000000085f R09: 0000000000000004
[  439.402551] R10: 0000000000000000 R11: 0000000000000001 R12: ffffa1810027fe20
[  439.402551] R13: ffff9388804b1e28 R14: 0000000000000000 R15: ffff938722a11e00
[  439.402553] FS:  0000000000000000(0000) GS:ffff938891380000(0000) 
knlGS:0000000000000000
[  439.402554] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  439.402554] CR2: 0000348da53f4000 CR3: 000000028640a006 CR4: 00000000003606e0
[  439.402555] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  439.402556] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  439.402556] Call Trace:
[  439.402564]  iwl_mvm_async_handlers_wk+0xb0/0x140 [iwlmvm]
[  439.402567]  process_one_work+0x1db/0x380
[  439.402568]  worker_thread+0x4d/0x400
[  439.402571]  kthread+0x104/0x140
[  439.402572]  ? process_one_work+0x380/0x380
[  439.402574]  ? kthread_park+0x80/0x80
[  439.402576]  ret_from_fork+0x35/0x40
[  439.402578] ---[ end trace 37ab392142ee0182 ]---
[  440.034322] iwlwifi 0000:04:00.0: Applying debug destination EXTERNAL_DRAM
[  440.183609] iwlwifi 0000:04:00.0: Applying debug destination EXTERNAL_DRAM
[  440.272261] iwlwifi 0000:04:00.0: FW already configured (0) - re-configuring
[  440.449987] wlp4s0: authenticate with d4:5d:df:d9:53:20
[  440.452380] wlp4s0: send auth to d4:5d:df:d9:53:20 (try 1/3)
[  440.563468] wlp4s0: send auth to d4:5d:df:d9:53:20 (try 2/3)
[  440.672306] wlp4s0: send auth to d4:5d:df:d9:53:20 (try 3/3)
[  440.678650] wlp4s0: authenticated
[  440.679575] wlp4s0: associate with d4:5d:df:d9:53:20 (try 1/3)
[  440.685667] wlp4s0: RX AssocResp from d4:5d:df:d9:53:20 (capab=0x431 
status=0 aid=9)
[  440.699092] wlp4s0: associated
[  440.730501] IPv6: ADDRCONF(NETDEV_CHANGE): wlp4s0: link becomes ready
[  462.795579] wlp4s0: deauthenticating from d4:5d:df:d9:53:20 by local choice 
(Reason: 3=DEAUTH_LEAVING)
[  466.289576] iwlwifi 0000:04:00.0: Microcode SW error detected.  Restarting 
0x2000000.
[  466.289803] iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
[  466.289810] iwlwifi 0000:04:00.0: Status: 0x00000080, count: 6
[  466.289815] iwlwifi 0000:04:00.0: Loaded firmware version: 36.77d01142.0
[  466.289821] iwlwifi 0000:04:00.0: 0x00000038 | BAD_COMMAND                 
[  466.289826] iwlwifi 0000:04:00.0: 0x000002F0 | trm_hw_status0
[  466.289831] iwlwifi 0000:04:00.0: 0x00000000 | trm_hw_status1
[  466.289836] iwlwifi 0000:04:00.0: 0x00024200 | branchlink2
[  466.289840] iwlwifi 0000:04:00.0: 0x00039872 | interruptlink1
[  466.289845] iwlwifi 0000:04:00.0: 0x00000000 | interruptlink2
[  466.289849] iwlwifi 0000:04:00.0: 0x00990405 | data1
[  466.289853] iwlwifi 0000:04:00.0: 0x0000009A | data2
[  466.289858] iwlwifi 0000:04:00.0: 0x0000009A | data3
[  466.289863] iwlwifi 0000:04:00.0: 0x3EC11584 | beacon time
[  466.289867] iwlwifi 0000:04:00.0: 0x014D2A7C | tsf low
[  466.289872] iwlwifi 0000:04:00.0: 0x00000098 | tsf hi
[  466.289876] iwlwifi 0000:04:00.0: 0x00000000 | time gp1
[  466.289880] iwlwifi 0000:04:00.0: 0x018D751D | time gp2
[  466.289885] iwlwifi 0000:04:00.0: 0x00000001 | uCode revision type
[  466.289890] iwlwifi 0000:04:00.0: 0x00000024 | uCode version major
[  466.289894] iwlwifi 0000:04:00.0: 0x77D01142 | uCode version minor
[  466.289899] iwlwifi 0000:04:00.0: 0x00000201 | hw version
[  466.289903] iwlwifi 0000:04:00.0: 0x00489008 | board version
[  466.289908] iwlwifi 0000:04:00.0: 0x00990405 | hcmd
[  466.289912] iwlwifi 0000:04:00.0: 0x00022080 | isr0
[  466.289916] iwlwifi 0000:04:00.0: 0x00000000 | isr1
[  466.289921] iwlwifi 0000:04:00.0: 0x28201802 | isr2
[  466.289925] iwlwifi 0000:04:00.0: 0x00400080 | isr3
[  466.289929] iwlwifi 0000:04:00.0: 0x00000000 | isr4
[  466.289933] iwlwifi 0000:04:00.0: 0x009801C8 | last cmd Id
[  466.289938] iwlwifi 0000:04:00.0: 0x00000000 | wait_event
[  466.289943] iwlwifi 0000:04:00.0: 0x0000D7AF | l2p_control
[  466.289947] iwlwifi 0000:04:00.0: 0x00000000 | l2p_duration
[  466.289951] iwlwifi 0000:04:00.0: 0x00000000 | l2p_mhvalid
[  466.289956] iwlwifi 0000:04:00.0: 0x00000000 | l2p_addr_match
[  466.289960] iwlwifi 0000:04:00.0: 0x0000008F | lmpm_pmg_sel
[  466.289965] iwlwifi 0000:04:00.0: 0x08081421 | timestamp
[  466.289969] iwlwifi 0000:04:00.0: 0x00002028 | flow_handler
[  466.290145] iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
[  466.290149] iwlwifi 0000:04:00.0: Status: 0x00000080, count: 7
[  466.290154] iwlwifi 0000:04:00.0: 0x00000070 | NMI_INTERRUPT_LMAC_FATAL
[  466.290159] iwlwifi 0000:04:00.0: 0x00000000 | umac branchlink1
[  466.290163] iwlwifi 0000:04:00.0: 0xC0086B38 | umac branchlink2
[  466.290168] iwlwifi 0000:04:00.0: 0xC0083D08 | umac interruptlink1
[  466.290172] iwlwifi 0000:04:00.0: 0xC0087F52 | umac interruptlink2
[  466.290176] iwlwifi 0000:04:00.0: 0x00000800 | umac data1
[  466.290181] iwlwifi 0000:04:00.0: 0xC0087F52 | umac data2
[  466.290185] iwlwifi 0000:04:00.0: 0xDEADBEEF | umac data3
[  466.290189] iwlwifi 0000:04:00.0: 0x00000024 | umac major
[  466.290194] iwlwifi 0000:04:00.0: 0x77D01142 | umac minor
[  466.290198] iwlwifi 0000:04:00.0: 0xC0887EE0 | frame pointer
[  466.290202] iwlwifi 0000:04:00.0: 0xC0887EE0 | stack pointer
[  466.290207] iwlwifi 0000:04:00.0: 0x00990405 | last host cmd
[  466.290211] iwlwifi 0000:04:00.0: 0x00004008 | isr status reg
[  466.290341] iwlwifi 0000:04:00.0: Fseq Registers:
[  466.290397] iwlwifi 0000:04:00.0: 0x88580D9D | FSEQ_ERROR_CODE
[  466.290454] iwlwifi 0000:04:00.0: 0x2FFE3709 | FSEQ_TOP_INIT_VERSION
[  466.290510] iwlwifi 0000:04:00.0: 0x940068B8 | FSEQ_CNVIO_INIT_VERSION
[  466.290566] iwlwifi 0000:04:00.0: 0x0000A056 | FSEQ_OTP_VERSION
[  466.290623] iwlwifi 0000:04:00.0: 0xDA317933 | FSEQ_TOP_CONTENT_VERSION
[  466.290679] iwlwifi 0000:04:00.0: 0x5DCB82E7 | FSEQ_ALIVE_TOKEN
[  466.290735] iwlwifi 0000:04:00.0: 0x713C97B7 | FSEQ_CNVI_ID
[  466.290791] iwlwifi 0000:04:00.0: 0x7CDA8738 | FSEQ_CNVR_ID
[  466.290848] iwlwifi 0000:04:00.0: 0x03000000 | CNVI_AUX_MISC_CHIP
[  466.290907] iwlwifi 0000:04:00.0: 0x0BADCAFE | CNVR_AUX_MISC_CHIP
[  466.290966] iwlwifi 0000:04:00.0: 0x0BADCAFE | 
CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[  466.291026] iwlwifi 0000:04:00.0: 0x0BADCAFE | 
CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[  466.291093] iwlwifi 0000:04:00.0: Collecting data: trigger 2 fired.
[  466.291103] ieee80211 phy0: Hardware restart was requested
[  466.291192] iwlwifi 0000:04:00.0: FW error in SYNC CMD GEO_TX_POWER_LIMIT
[  466.291205] CPU: 2 PID: 156 Comm: kworker/2:2 Tainted: G        W         
5.3.0-19-generic #20-Ubuntu
[  466.291208] Hardware name: LENOVO 20FBCTO1WW/20FBCTO1WW, BIOS N1FET68W (1.42 
) 03/13/2019
[  466.291250] Workqueue: events iwl_mvm_async_handlers_wk [iwlmvm]
[  466.291257] Call Trace:
[  466.291273]  dump_stack+0x63/0x8a
[  466.291315]  iwl_pcie_send_hcmd_sync+0x497/0x4b0 [iwlwifi]
[  466.291326]  ? wait_woken+0x80/0x80
[  466.291363]  iwl_trans_pcie_send_hcmd+0x34/0xe0 [iwlwifi]
[  466.291404]  iwl_trans_send_cmd+0x5d/0xc0 [iwlwifi]
[  466.291444]  iwl_mvm_send_cmd+0x34/0x90 [iwlmvm]
[  466.291475]  iwl_mvm_get_sar_geo_profile+0xae/0x130 [iwlmvm]
[  466.291511]  iwl_mvm_rx_chub_update_mcc+0x103/0x1a0 [iwlmvm]
[  466.291540]  iwl_mvm_async_handlers_wk+0xb0/0x140 [iwlmvm]
[  466.291548]  process_one_work+0x1db/0x380
[  466.291554]  worker_thread+0x4d/0x400
[  466.291563]  kthread+0x104/0x140
[  466.291568]  ? process_one_work+0x380/0x380
[  466.291575]  ? kthread_park+0x80/0x80
[  466.291584]  ret_from_fork+0x35/0x40
[  466.291674] iwlwifi 0000:04:00.0: Failed to get geographic profile info -5
[  466.291710] ------------[ cut here ]------------
[  466.291825] WARNING: CPU: 2 PID: 156 at 
drivers/net/wireless/intel/iwlwifi/mvm/scan.c:1874 
iwl_mvm_rx_umac_scan_complete_notif.cold+0xc/0x13 [iwlmvm]
[  466.291834] Modules linked in: ccm rfcomm xt_MASQUERADE nf_conntrack_netlink 
nfnetlink xfrm_user xfrm_algo iptable_nat xt_addrtype iptable_filter bpfilter 
xt_conntrack nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c 
br_netfilter bridge stp llc aufs cmac bnep nls_iso8859_1 intel_rapl_msr 
snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core mei_hdcp snd_soc_skl_ipc 
snd_soc_sst_ipc snd_hda_codec_hdmi snd_soc_sst_dsp snd_soc_acpi_intel_match 
snd_soc_acpi snd_hda_codec_conexant snd_hda_codec_generic snd_soc_core 
snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_hda_codec 
snd_hda_core snd_hwdep intel_rapl_common snd_pcm x86_pkg_temp_thermal 
intel_powerclamp iwlmvm coretemp mac80211 kvm_intel snd_seq_midi libarc4 
snd_seq_midi_event kvm uvcvideo snd_rawmidi btusb btrtl irqbypass btbcm 
videobuf2_vmalloc btintel videobuf2_memops iwlwifi intel_cstate videobuf2_v4l2 
intel_rapl_perf snd_seq input_leds joydev wmi_bmof videobuf2_common bluetooth 
hid_sensor_accel_3d snd_seq_device videodev
[  466.292038]  hid_sensor_trigger industrialio_triggered_buffer thinkpad_acpi 
serio_raw sparse_keymap mc kfifo_buf snd_timer ecdh_generic ecc 
hid_sensor_iio_common nvram ledtrig_audio industrialio cfg80211 
intel_xhci_usb_role_switch snd roles rtsx_pci_ms mei_me intel_pch_thermal 
memstick mei cros_ec_ishtp cros_ec_core soundcore mac_hid sch_fq_codel 
parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_sensor_custom 
hid_sensor_hub hid_generic intel_ishtp_loader intel_ishtp_hid hid 
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel rtsx_pci_sdmmc i915 nvme 
aesni_intel i2c_algo_bit drm_kms_helper aes_x86_64 syscopyarea crypto_simd 
e1000e psmouse sysfillrect nvme_core cryptd sysimgblt rtsx_pci fb_sys_fops 
glue_helper i2c_i801 intel_ish_ipc intel_ishtp drm wmi video
[  466.292176] CPU: 2 PID: 156 Comm: kworker/2:2 Tainted: G        W         
5.3.0-19-generic #20-Ubuntu
[  466.292180] Hardware name: LENOVO 20FBCTO1WW/20FBCTO1WW, BIOS N1FET68W (1.42 
) 03/13/2019
[  466.292220] Workqueue: events iwl_mvm_async_handlers_wk [iwlmvm]
[  466.292270] RIP: 0010:iwl_mvm_rx_umac_scan_complete_notif.cold+0xc/0x13 
[iwlmvm]
[  466.292279] Code: 48 c7 c7 00 f9 bf c0 e8 df 9c 11 c6 0f 0b 49 8b 47 10 44 
8b a0 9c 00 00 00 e9 a2 3e fe ff 48 c7 c7 00 f9 bf c0 e8 c1 9c 11 c6 <0f> 0b e9 
dc 43 fe ff 48 c7 c7 00 f9 bf c0 e8 ae 9c 11 c6 0f 0b 41
[  466.292284] RSP: 0018:ffffa18100277dd0 EFLAGS: 00010246
[  466.292292] RAX: 0000000000000024 RBX: ffff938880624780 RCX: 0000000000000006
[  466.292295] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff938891317440
[  466.292301] RBP: ffffa18100277e08 R08: 00000000000008e3 R09: 0000000000000004
[  466.292304] R10: 0000000000000000 R11: 0000000000000001 R12: ffffa18100277e20
[  466.292308] R13: ffff9388804b1e28 R14: 0000000000000000 R15: ffff938830f78c00
[  466.292314] FS:  0000000000000000(0000) GS:ffff938891300000(0000) 
knlGS:0000000000000000
[  466.292318] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  466.292323] CR2: 00007f0029eda860 CR3: 000000028640a003 CR4: 00000000003606e0
[  466.292328] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  466.292333] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  466.292336] Call Trace:
[  466.292378]  iwl_mvm_async_handlers_wk+0xb0/0x140 [iwlmvm]
[  466.292390]  process_one_work+0x1db/0x380
[  466.292398]  worker_thread+0x4d/0x400
[  466.292410]  kthread+0x104/0x140
[  466.292416]  ? process_one_work+0x380/0x380
[  466.292425]  ? kthread_park+0x80/0x80
[  466.292436]  ret_from_fork+0x35/0x40
[  466.292446] ---[ end trace 37ab392142ee0183 ]---

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1804841

Title:
  iwlwifi Microcode SW error detected.  Restarting 0x2000000.

Status in linux package in Ubuntu:
  Incomplete
Status in linux-firmware package in Ubuntu:
  Incomplete

Bug description:
  This seems to be a return of an existing bug, in newer hardware and
  microcode versions.

  Wireless card: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 78)
  Firmware version: 34.0.1
  Description:    Ubuntu 18.04.1 LTS

  Frequent errors as soon as I connect to wifi:
  Microcode SW error detected.  Restarting 0x2000000.

  Expected to happen: Great and stable wifi like a couple of weeks ago
  What happens: very slow, intermittent internet access, lots of ping loss

  Found a suggestion of a workaround: adding these lines to
  /etc/NetworkManager/NetworkManager.conf

  [device]
  wifi.scan-rand-mac-address=no

  These lines were already there, not added by me.

  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-firmware 1.173.2 [modified: lib/firmware/iwlwifi-8265-36.ucode]
  ProcVersionSignature: Ubuntu 4.15.0-39.42-generic 4.15.18
  Uname: Linux 4.15.0-39-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  Date: Fri Nov 23 15:23:54 2018
  Dependencies:

  InstallationDate: Installed on 2018-09-03 (81 days ago)
  InstallationMedia: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 
(20180725)
  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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