Public bug reported:

1) $ lsb_release -rd
Description:    Ubuntu 20.04.1 LTS
Release:        20.04

2) $ apt-cache policy linux-image-5.4.0-42-generic
linux-image-5.4.0-42-generic:
  Installed: 5.4.0-42.46
  Candidate: 5.4.0-42.46
  Version table:
 *** 5.4.0-42.46 500
        500 http://at.archive.ubuntu.com/ubuntu focal-updates/main amd64 
Packages
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
        100 /var/lib/dpkg/status

3) No WiFi disconnects
4) WiFi disconnects (other clients don't have any issues)

The WiFi AP is a Mikrotik cAP AC running RouterOS v6.47.1, 2.4/5GHz
dual-band (4 channels), WPA2-PSK.

I see reglular WiFi disconnects since a few days now, possibly related
to a kernel and/or firmware upgrade.

https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1889182
looks similar, but I have different Intel hardware:

00:14.3 Network controller: Intel Corporation Killer Wi-Fi 6 AX1650i
160MHz Wireless Network Adapter (201NGW) (rev 30)

[87471.950797] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 
0x0.
[87471.950881] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
[87471.950884] iwlwifi 0000:00:14.3: Status: 0x00000040, count: 6
[87471.950887] iwlwifi 0000:00:14.3: Loaded firmware version: 48.4fa0041f.0
[87471.950889] iwlwifi 0000:00:14.3: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL    
[87471.950891] iwlwifi 0000:00:14.3: 0x0000A200 | trm_hw_status0
[87471.950893] iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
[87471.950895] iwlwifi 0000:00:14.3: 0x004CA468 | branchlink2
[87471.950897] iwlwifi 0000:00:14.3: 0x004B5438 | interruptlink1
[87471.950898] iwlwifi 0000:00:14.3: 0x004B5438 | interruptlink2
[87471.950900] iwlwifi 0000:00:14.3: 0x004C54E6 | data1
[87471.950902] iwlwifi 0000:00:14.3: 0x00001000 | data2
[87471.950903] iwlwifi 0000:00:14.3: 0xF0000008 | data3
[87471.950905] iwlwifi 0000:00:14.3: 0x8580BFB0 | beacon time
[87471.950907] iwlwifi 0000:00:14.3: 0xF6D4B028 | tsf low
[87471.950909] iwlwifi 0000:00:14.3: 0x00000013 | tsf hi
[87471.950910] iwlwifi 0000:00:14.3: 0x00000000 | time gp1
[87471.950912] iwlwifi 0000:00:14.3: 0x03470D2D | time gp2
[87471.950914] iwlwifi 0000:00:14.3: 0x00000001 | uCode revision type
[87471.950915] iwlwifi 0000:00:14.3: 0x00000030 | uCode version major
[87471.950917] iwlwifi 0000:00:14.3: 0x4FA0041F | uCode version minor
[87471.950919] iwlwifi 0000:00:14.3: 0x00000332 | hw version
[87471.950921] iwlwifi 0000:00:14.3: 0x00C89008 | board version
[87471.950922] iwlwifi 0000:00:14.3: 0x8028FD19 | hcmd
[87471.950924] iwlwifi 0000:00:14.3: 0x24020000 | isr0
[87471.950926] iwlwifi 0000:00:14.3: 0x00000000 | isr1
[87471.950927] iwlwifi 0000:00:14.3: 0x18F84802 | isr2
[87471.950929] iwlwifi 0000:00:14.3: 0x00C1FFCC | isr3
[87471.950931] iwlwifi 0000:00:14.3: 0x00000000 | isr4
[87471.950932] iwlwifi 0000:00:14.3: 0x009D01D1 | last cmd Id
[87471.950934] iwlwifi 0000:00:14.3: 0x004C54E6 | wait_event
[87471.950936] iwlwifi 0000:00:14.3: 0x000000D4 | l2p_control
[87471.950938] iwlwifi 0000:00:14.3: 0x00018014 | l2p_duration
[87471.950939] iwlwifi 0000:00:14.3: 0x00000007 | l2p_mhvalid
[87471.950941] iwlwifi 0000:00:14.3: 0x00000000 | l2p_addr_match
[87471.950943] iwlwifi 0000:00:14.3: 0x00000008 | lmpm_pmg_sel
[87471.950944] iwlwifi 0000:00:14.3: 0x00000000 | timestamp
[87471.950946] iwlwifi 0000:00:14.3: 0x0000988C | flow_handler
[87471.950984] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
[87471.950986] iwlwifi 0000:00:14.3: Status: 0x00000040, count: 7
[87471.950988] iwlwifi 0000:00:14.3: 0x200014FD | ADVANCED_SYSASSERT
[87471.950989] iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
[87471.950991] iwlwifi 0000:00:14.3: 0xC008D49C | umac branchlink2
[87471.950993] iwlwifi 0000:00:14.3: 0xC00871A4 | umac interruptlink1
[87471.950995] iwlwifi 0000:00:14.3: 0x00000000 | umac interruptlink2
[87471.950996] iwlwifi 0000:00:14.3: 0x00000082 | umac data1
[87471.950998] iwlwifi 0000:00:14.3: 0xDEADBEEF | umac data2
[87471.951000] iwlwifi 0000:00:14.3: 0xDEADBEEF | umac data3
[87471.951001] iwlwifi 0000:00:14.3: 0x00000030 | umac major
[87471.951003] iwlwifi 0000:00:14.3: 0x4FA0041F | umac minor
[87471.951005] iwlwifi 0000:00:14.3: 0x03470D20 | frame pointer
[87471.951006] iwlwifi 0000:00:14.3: 0xC0885EA0 | stack pointer
[87471.951008] iwlwifi 0000:00:14.3: 0x00AA0108 | last host cmd
[87471.951010] iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
[87471.951025] iwlwifi 0000:00:14.3: Fseq Registers:
[87471.951044] iwlwifi 0000:00:14.3: 0xE0000101 | FSEQ_ERROR_CODE
[87471.951049] iwlwifi 0000:00:14.3: 0x00290033 | FSEQ_TOP_INIT_VERSION
[87471.951068] iwlwifi 0000:00:14.3: 0x80070043 | FSEQ_CNVIO_INIT_VERSION
[87471.951090] iwlwifi 0000:00:14.3: 0x0000A481 | FSEQ_OTP_VERSION
[87471.951110] iwlwifi 0000:00:14.3: 0x00000002 | FSEQ_TOP_CONTENT_VERSION
[87471.951131] iwlwifi 0000:00:14.3: 0x4552414E | FSEQ_ALIVE_TOKEN
[87471.951152] iwlwifi 0000:00:14.3: 0x02000300 | FSEQ_CNVI_ID
[87471.951157] iwlwifi 0000:00:14.3: 0x01300504 | FSEQ_CNVR_ID
[87471.951177] iwlwifi 0000:00:14.3: 0x02000300 | CNVI_AUX_MISC_CHIP
[87471.951199] iwlwifi 0000:00:14.3: 0x01300504 | CNVR_AUX_MISC_CHIP
[87471.951220] iwlwifi 0000:00:14.3: 0x05B0905B | 
CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[87471.951242] iwlwifi 0000:00:14.3: 0x0000025B | 
CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[87471.951403] iwlwifi 0000:00:14.3: Collecting data: trigger 2 fired.
[87471.951411] ieee80211 phy0: Hardware restart was requested
[87471.951454] iwlwifi 0000:00:14.3: FW error in SYNC CMD PHY_CONTEXT_CMD
[87471.951465] CPU: 6 PID: 981 Comm: wpa_supplicant Tainted: G     U  W         
5.4.0-42-generic #46-Ubuntu
[87471.951468] Hardware name: Dell Inc. XPS 13 7390 2-in-1/06CDVY, BIOS 1.0.9 
08/02/2019
[87471.951471] Call Trace:
[87471.951485]  dump_stack+0x6d/0x9a
[87471.951506]  iwl_trans_pcie_gen2_send_hcmd+0x3de/0x3f0 [iwlwifi]
[87471.951515]  ? wait_woken+0x80/0x80
[87471.951531]  iwl_trans_send_cmd+0x55/0xc0 [iwlwifi]
[87471.951544]  iwl_mvm_send_cmd+0x1f/0x40 [iwlmvm]
[87471.951554]  iwl_mvm_send_cmd_pdu+0x51/0x70 [iwlmvm]
[87471.951563]  iwl_mvm_phy_ctxt_apply.constprop.0+0x173/0x240 [iwlmvm]
[87471.951572]  iwl_mvm_phy_ctxt_changed+0x58/0xb0 [iwlmvm]
[87471.951579]  iwl_mvm_change_chanctx+0x10a/0x140 [iwlmvm]
[87471.951613]  ieee80211_recalc_chanctx_min_def+0x1ee/0x340 [mac80211]
[87471.951643]  ieee80211_assign_vif_chanctx+0x21c/0x420 [mac80211]
[87471.951669]  ieee80211_vif_use_channel+0x17b/0x290 [mac80211]
[87471.951699]  ieee80211_prep_channel+0x2be/0x500 [mac80211]
[87471.951726]  ieee80211_prep_connection+0x25f/0x430 [mac80211]
[87471.951756]  ieee80211_mgd_auth+0x19d/0x3d0 [mac80211]
[87471.951786]  ieee80211_auth+0x18/0x20 [mac80211]
[87471.951813]  cfg80211_mlme_auth+0x104/0x210 [cfg80211]
[87471.951832]  nl80211_authenticate+0x284/0x2e0 [cfg80211]
[87471.951837]  genl_family_rcv_msg+0x1b9/0x470
[87471.951840]  ? __netlink_sendskb+0x42/0x50
[87471.951842]  genl_rcv_msg+0x4c/0xa0
[87471.951845]  ? _cond_resched+0x19/0x30
[87471.951847]  ? genl_family_rcv_msg+0x470/0x470
[87471.951849]  netlink_rcv_skb+0x50/0x120
[87471.951851]  genl_rcv+0x29/0x40
[87471.951853]  netlink_unicast+0x187/0x220
[87471.951855]  netlink_sendmsg+0x222/0x3e0
[87471.951859]  sock_sendmsg+0x65/0x70
[87471.951861]  ____sys_sendmsg+0x212/0x280
[87471.951864]  ___sys_sendmsg+0x88/0xd0
[87471.951867]  ? ___sys_recvmsg+0x88/0xc0
[87471.951869]  ? sock_ioctl+0x24f/0x3c0
[87471.951870]  ? _cond_resched+0x19/0x30
[87471.951875]  ? get_max_files+0x20/0x20
[87471.951880]  ? __cgroup_bpf_run_filter_setsockopt+0xae/0x2c0
[87471.951882]  ? _cond_resched+0x19/0x30
[87471.951887]  ? aa_sk_perm+0x43/0x170
[87471.951891]  __sys_sendmsg+0x5c/0xa0
[87471.951895]  __x64_sys_sendmsg+0x1f/0x30
[87471.951900]  do_syscall_64+0x57/0x190
[87471.951904]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[87471.951908] RIP: 0033:0x7f420cf665b7
[87471.951913] Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 00 00 
f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 
f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[87471.951916] RSP: 002b:00007ffd6b99de48 EFLAGS: 00000246 ORIG_RAX: 
000000000000002e
[87471.951920] RAX: ffffffffffffffda RBX: 000055a56d2505b0 RCX: 00007f420cf665b7
[87471.951921] RDX: 0000000000000000 RSI: 00007ffd6b99de80 RDI: 0000000000000006
[87471.951923] RBP: 000055a56d2b5540 R08: 0000000000000004 R09: 00007f420d02eb80
[87471.951925] R10: 00007ffd6b99df54 R11: 0000000000000246 R12: 000055a56d2504c0
[87471.951926] R13: 00007ffd6b99de80 R14: 00007ffd6b99df54 R15: 000055a56d25af80
[87471.951934] iwlwifi 0000:00:14.3: PHY ctxt cmd error. ret=-5
[87471.951951] iwlwifi 0000:00:14.3: Failed to send MAC context (action:2): -5
[87471.951958] iwlwifi 0000:00:14.3: failed to update MAC 24:ee:9a:54:c3:3d
[87472.358947] iwlwifi 0000:00:14.3: Failed to send MAC context (action:2): -5
[87472.358949] iwlwifi 0000:00:14.3: failed to update MAC 24:ee:9a:54:c3:3d
[87472.358978] wlp0s20f3: failed to insert STA entry for the AP (error -5)
[87472.358980] iwlwifi 0000:00:14.3: Failed to send MAC context (action:2): -5
[87472.358982] iwlwifi 0000:00:14.3: failed to update MAC 24:ee:9a:54:c3:3d
[87472.358985] iwlwifi 0000:00:14.3: Failed to send binding (action:3): -5
[87472.358987] iwlwifi 0000:00:14.3: Failed to send MAC context (action:2): -5
[87472.358988] iwlwifi 0000:00:14.3: failed to update MAC 24:ee:9a:54:c3:3d
[87472.358991] iwlwifi 0000:00:14.3: PHY ctxt cmd error. ret=-5
[87472.380868] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
[87472.525632] iwlwifi 0000:00:14.3: FW already configured (0) - re-configuring
[87472.624978] wlp0s20f3: authenticate with c4:ad:34:f7:41:8b
[87472.627380] wlp0s20f3: send auth to c4:ad:34:f7:41:8b (try 1/3)
[87472.652253] wlp0s20f3: authenticated
[87472.655288] wlp0s20f3: associate with c4:ad:34:f7:41:8b (try 1/3)
[87472.657733] wlp0s20f3: RX AssocResp from c4:ad:34:f7:41:8b (capab=0x431 
status=0 aid=1)
[87472.660341] wlp0s20f3: associated

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-42-generic 5.4.0-42.46
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.6
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  alex       1701 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 18 18:57:12 2020
InstallationDate: Installed on 2019-12-02 (260 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: Dell Inc. XPS 13 7390 2-in-1
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-42-generic 
root=/dev/mapper/ubuntu--vg-root ro quiet splash i915.enable_psr=0 vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-42-generic N/A
 linux-backports-modules-5.4.0-42-generic  N/A
 linux-firmware                            1.187.2
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-04-23 (116 days ago)
dmi.bios.date: 08/02/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.0.9
dmi.board.name: 06CDVY
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 31
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.0.9:bd08/02/2019:svnDellInc.:pnXPS1373902-in-1:pvr:rvnDellInc.:rn06CDVY:rvrA00:cvnDellInc.:ct31:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 7390 2-in-1
dmi.product.sku: 08B0
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1892074

Title:
  WiFi keeps disconnecting

Status in linux package in Ubuntu:
  New

Bug description:
  1) $ lsb_release -rd
  Description:  Ubuntu 20.04.1 LTS
  Release:      20.04

  2) $ apt-cache policy linux-image-5.4.0-42-generic
  linux-image-5.4.0-42-generic:
    Installed: 5.4.0-42.46
    Candidate: 5.4.0-42.46
    Version table:
   *** 5.4.0-42.46 500
          500 http://at.archive.ubuntu.com/ubuntu focal-updates/main amd64 
Packages
          500 http://security.ubuntu.com/ubuntu focal-security/main amd64 
Packages
          100 /var/lib/dpkg/status

  3) No WiFi disconnects
  4) WiFi disconnects (other clients don't have any issues)

  The WiFi AP is a Mikrotik cAP AC running RouterOS v6.47.1, 2.4/5GHz
  dual-band (4 channels), WPA2-PSK.

  I see reglular WiFi disconnects since a few days now, possibly related
  to a kernel and/or firmware upgrade.

  https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1889182
  looks similar, but I have different Intel hardware:

  00:14.3 Network controller: Intel Corporation Killer Wi-Fi 6 AX1650i
  160MHz Wireless Network Adapter (201NGW) (rev 30)

  [87471.950797] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 
0x0.
  [87471.950881] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
  [87471.950884] iwlwifi 0000:00:14.3: Status: 0x00000040, count: 6
  [87471.950887] iwlwifi 0000:00:14.3: Loaded firmware version: 48.4fa0041f.0
  [87471.950889] iwlwifi 0000:00:14.3: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL    
  [87471.950891] iwlwifi 0000:00:14.3: 0x0000A200 | trm_hw_status0
  [87471.950893] iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
  [87471.950895] iwlwifi 0000:00:14.3: 0x004CA468 | branchlink2
  [87471.950897] iwlwifi 0000:00:14.3: 0x004B5438 | interruptlink1
  [87471.950898] iwlwifi 0000:00:14.3: 0x004B5438 | interruptlink2
  [87471.950900] iwlwifi 0000:00:14.3: 0x004C54E6 | data1
  [87471.950902] iwlwifi 0000:00:14.3: 0x00001000 | data2
  [87471.950903] iwlwifi 0000:00:14.3: 0xF0000008 | data3
  [87471.950905] iwlwifi 0000:00:14.3: 0x8580BFB0 | beacon time
  [87471.950907] iwlwifi 0000:00:14.3: 0xF6D4B028 | tsf low
  [87471.950909] iwlwifi 0000:00:14.3: 0x00000013 | tsf hi
  [87471.950910] iwlwifi 0000:00:14.3: 0x00000000 | time gp1
  [87471.950912] iwlwifi 0000:00:14.3: 0x03470D2D | time gp2
  [87471.950914] iwlwifi 0000:00:14.3: 0x00000001 | uCode revision type
  [87471.950915] iwlwifi 0000:00:14.3: 0x00000030 | uCode version major
  [87471.950917] iwlwifi 0000:00:14.3: 0x4FA0041F | uCode version minor
  [87471.950919] iwlwifi 0000:00:14.3: 0x00000332 | hw version
  [87471.950921] iwlwifi 0000:00:14.3: 0x00C89008 | board version
  [87471.950922] iwlwifi 0000:00:14.3: 0x8028FD19 | hcmd
  [87471.950924] iwlwifi 0000:00:14.3: 0x24020000 | isr0
  [87471.950926] iwlwifi 0000:00:14.3: 0x00000000 | isr1
  [87471.950927] iwlwifi 0000:00:14.3: 0x18F84802 | isr2
  [87471.950929] iwlwifi 0000:00:14.3: 0x00C1FFCC | isr3
  [87471.950931] iwlwifi 0000:00:14.3: 0x00000000 | isr4
  [87471.950932] iwlwifi 0000:00:14.3: 0x009D01D1 | last cmd Id
  [87471.950934] iwlwifi 0000:00:14.3: 0x004C54E6 | wait_event
  [87471.950936] iwlwifi 0000:00:14.3: 0x000000D4 | l2p_control
  [87471.950938] iwlwifi 0000:00:14.3: 0x00018014 | l2p_duration
  [87471.950939] iwlwifi 0000:00:14.3: 0x00000007 | l2p_mhvalid
  [87471.950941] iwlwifi 0000:00:14.3: 0x00000000 | l2p_addr_match
  [87471.950943] iwlwifi 0000:00:14.3: 0x00000008 | lmpm_pmg_sel
  [87471.950944] iwlwifi 0000:00:14.3: 0x00000000 | timestamp
  [87471.950946] iwlwifi 0000:00:14.3: 0x0000988C | flow_handler
  [87471.950984] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
  [87471.950986] iwlwifi 0000:00:14.3: Status: 0x00000040, count: 7
  [87471.950988] iwlwifi 0000:00:14.3: 0x200014FD | ADVANCED_SYSASSERT
  [87471.950989] iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
  [87471.950991] iwlwifi 0000:00:14.3: 0xC008D49C | umac branchlink2
  [87471.950993] iwlwifi 0000:00:14.3: 0xC00871A4 | umac interruptlink1
  [87471.950995] iwlwifi 0000:00:14.3: 0x00000000 | umac interruptlink2
  [87471.950996] iwlwifi 0000:00:14.3: 0x00000082 | umac data1
  [87471.950998] iwlwifi 0000:00:14.3: 0xDEADBEEF | umac data2
  [87471.951000] iwlwifi 0000:00:14.3: 0xDEADBEEF | umac data3
  [87471.951001] iwlwifi 0000:00:14.3: 0x00000030 | umac major
  [87471.951003] iwlwifi 0000:00:14.3: 0x4FA0041F | umac minor
  [87471.951005] iwlwifi 0000:00:14.3: 0x03470D20 | frame pointer
  [87471.951006] iwlwifi 0000:00:14.3: 0xC0885EA0 | stack pointer
  [87471.951008] iwlwifi 0000:00:14.3: 0x00AA0108 | last host cmd
  [87471.951010] iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
  [87471.951025] iwlwifi 0000:00:14.3: Fseq Registers:
  [87471.951044] iwlwifi 0000:00:14.3: 0xE0000101 | FSEQ_ERROR_CODE
  [87471.951049] iwlwifi 0000:00:14.3: 0x00290033 | FSEQ_TOP_INIT_VERSION
  [87471.951068] iwlwifi 0000:00:14.3: 0x80070043 | FSEQ_CNVIO_INIT_VERSION
  [87471.951090] iwlwifi 0000:00:14.3: 0x0000A481 | FSEQ_OTP_VERSION
  [87471.951110] iwlwifi 0000:00:14.3: 0x00000002 | FSEQ_TOP_CONTENT_VERSION
  [87471.951131] iwlwifi 0000:00:14.3: 0x4552414E | FSEQ_ALIVE_TOKEN
  [87471.951152] iwlwifi 0000:00:14.3: 0x02000300 | FSEQ_CNVI_ID
  [87471.951157] iwlwifi 0000:00:14.3: 0x01300504 | FSEQ_CNVR_ID
  [87471.951177] iwlwifi 0000:00:14.3: 0x02000300 | CNVI_AUX_MISC_CHIP
  [87471.951199] iwlwifi 0000:00:14.3: 0x01300504 | CNVR_AUX_MISC_CHIP
  [87471.951220] iwlwifi 0000:00:14.3: 0x05B0905B | 
CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
  [87471.951242] iwlwifi 0000:00:14.3: 0x0000025B | 
CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
  [87471.951403] iwlwifi 0000:00:14.3: Collecting data: trigger 2 fired.
  [87471.951411] ieee80211 phy0: Hardware restart was requested
  [87471.951454] iwlwifi 0000:00:14.3: FW error in SYNC CMD PHY_CONTEXT_CMD
  [87471.951465] CPU: 6 PID: 981 Comm: wpa_supplicant Tainted: G     U  W       
  5.4.0-42-generic #46-Ubuntu
  [87471.951468] Hardware name: Dell Inc. XPS 13 7390 2-in-1/06CDVY, BIOS 1.0.9 
08/02/2019
  [87471.951471] Call Trace:
  [87471.951485]  dump_stack+0x6d/0x9a
  [87471.951506]  iwl_trans_pcie_gen2_send_hcmd+0x3de/0x3f0 [iwlwifi]
  [87471.951515]  ? wait_woken+0x80/0x80
  [87471.951531]  iwl_trans_send_cmd+0x55/0xc0 [iwlwifi]
  [87471.951544]  iwl_mvm_send_cmd+0x1f/0x40 [iwlmvm]
  [87471.951554]  iwl_mvm_send_cmd_pdu+0x51/0x70 [iwlmvm]
  [87471.951563]  iwl_mvm_phy_ctxt_apply.constprop.0+0x173/0x240 [iwlmvm]
  [87471.951572]  iwl_mvm_phy_ctxt_changed+0x58/0xb0 [iwlmvm]
  [87471.951579]  iwl_mvm_change_chanctx+0x10a/0x140 [iwlmvm]
  [87471.951613]  ieee80211_recalc_chanctx_min_def+0x1ee/0x340 [mac80211]
  [87471.951643]  ieee80211_assign_vif_chanctx+0x21c/0x420 [mac80211]
  [87471.951669]  ieee80211_vif_use_channel+0x17b/0x290 [mac80211]
  [87471.951699]  ieee80211_prep_channel+0x2be/0x500 [mac80211]
  [87471.951726]  ieee80211_prep_connection+0x25f/0x430 [mac80211]
  [87471.951756]  ieee80211_mgd_auth+0x19d/0x3d0 [mac80211]
  [87471.951786]  ieee80211_auth+0x18/0x20 [mac80211]
  [87471.951813]  cfg80211_mlme_auth+0x104/0x210 [cfg80211]
  [87471.951832]  nl80211_authenticate+0x284/0x2e0 [cfg80211]
  [87471.951837]  genl_family_rcv_msg+0x1b9/0x470
  [87471.951840]  ? __netlink_sendskb+0x42/0x50
  [87471.951842]  genl_rcv_msg+0x4c/0xa0
  [87471.951845]  ? _cond_resched+0x19/0x30
  [87471.951847]  ? genl_family_rcv_msg+0x470/0x470
  [87471.951849]  netlink_rcv_skb+0x50/0x120
  [87471.951851]  genl_rcv+0x29/0x40
  [87471.951853]  netlink_unicast+0x187/0x220
  [87471.951855]  netlink_sendmsg+0x222/0x3e0
  [87471.951859]  sock_sendmsg+0x65/0x70
  [87471.951861]  ____sys_sendmsg+0x212/0x280
  [87471.951864]  ___sys_sendmsg+0x88/0xd0
  [87471.951867]  ? ___sys_recvmsg+0x88/0xc0
  [87471.951869]  ? sock_ioctl+0x24f/0x3c0
  [87471.951870]  ? _cond_resched+0x19/0x30
  [87471.951875]  ? get_max_files+0x20/0x20
  [87471.951880]  ? __cgroup_bpf_run_filter_setsockopt+0xae/0x2c0
  [87471.951882]  ? _cond_resched+0x19/0x30
  [87471.951887]  ? aa_sk_perm+0x43/0x170
  [87471.951891]  __sys_sendmsg+0x5c/0xa0
  [87471.951895]  __x64_sys_sendmsg+0x1f/0x30
  [87471.951900]  do_syscall_64+0x57/0x190
  [87471.951904]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
  [87471.951908] RIP: 0033:0x7f420cf665b7
  [87471.951913] Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 00 00 
f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 
f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
  [87471.951916] RSP: 002b:00007ffd6b99de48 EFLAGS: 00000246 ORIG_RAX: 
000000000000002e
  [87471.951920] RAX: ffffffffffffffda RBX: 000055a56d2505b0 RCX: 
00007f420cf665b7
  [87471.951921] RDX: 0000000000000000 RSI: 00007ffd6b99de80 RDI: 
0000000000000006
  [87471.951923] RBP: 000055a56d2b5540 R08: 0000000000000004 R09: 
00007f420d02eb80
  [87471.951925] R10: 00007ffd6b99df54 R11: 0000000000000246 R12: 
000055a56d2504c0
  [87471.951926] R13: 00007ffd6b99de80 R14: 00007ffd6b99df54 R15: 
000055a56d25af80
  [87471.951934] iwlwifi 0000:00:14.3: PHY ctxt cmd error. ret=-5
  [87471.951951] iwlwifi 0000:00:14.3: Failed to send MAC context (action:2): -5
  [87471.951958] iwlwifi 0000:00:14.3: failed to update MAC 24:ee:9a:54:c3:3d
  [87472.358947] iwlwifi 0000:00:14.3: Failed to send MAC context (action:2): -5
  [87472.358949] iwlwifi 0000:00:14.3: failed to update MAC 24:ee:9a:54:c3:3d
  [87472.358978] wlp0s20f3: failed to insert STA entry for the AP (error -5)
  [87472.358980] iwlwifi 0000:00:14.3: Failed to send MAC context (action:2): -5
  [87472.358982] iwlwifi 0000:00:14.3: failed to update MAC 24:ee:9a:54:c3:3d
  [87472.358985] iwlwifi 0000:00:14.3: Failed to send binding (action:3): -5
  [87472.358987] iwlwifi 0000:00:14.3: Failed to send MAC context (action:2): -5
  [87472.358988] iwlwifi 0000:00:14.3: failed to update MAC 24:ee:9a:54:c3:3d
  [87472.358991] iwlwifi 0000:00:14.3: PHY ctxt cmd error. ret=-5
  [87472.380868] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
  [87472.525632] iwlwifi 0000:00:14.3: FW already configured (0) - 
re-configuring
  [87472.624978] wlp0s20f3: authenticate with c4:ad:34:f7:41:8b
  [87472.627380] wlp0s20f3: send auth to c4:ad:34:f7:41:8b (try 1/3)
  [87472.652253] wlp0s20f3: authenticated
  [87472.655288] wlp0s20f3: associate with c4:ad:34:f7:41:8b (try 1/3)
  [87472.657733] wlp0s20f3: RX AssocResp from c4:ad:34:f7:41:8b (capab=0x431 
status=0 aid=1)
  [87472.660341] wlp0s20f3: associated

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-42-generic 5.4.0-42.46
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Uname: Linux 5.4.0-42-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alex       1701 F.... pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Aug 18 18:57:12 2020
  InstallationDate: Installed on 2019-12-02 (260 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  MachineType: Dell Inc. XPS 13 7390 2-in-1
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-42-generic 
root=/dev/mapper/ubuntu--vg-root ro quiet splash i915.enable_psr=0 vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-42-generic N/A
   linux-backports-modules-5.4.0-42-generic  N/A
   linux-firmware                            1.187.2
  SourcePackage: linux
  UpgradeStatus: Upgraded to focal on 2020-04-23 (116 days ago)
  dmi.bios.date: 08/02/2019
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.0.9
  dmi.board.name: 06CDVY
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 31
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.0.9:bd08/02/2019:svnDellInc.:pnXPS1373902-in-1:pvr:rvnDellInc.:rn06CDVY:rvrA00:cvnDellInc.:ct31:cvr:
  dmi.product.family: XPS
  dmi.product.name: XPS 13 7390 2-in-1
  dmi.product.sku: 08B0
  dmi.sys.vendor: Dell Inc.

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