I edited /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
changing wifi.powersave = 3 to wifi.powersave = 2.

This improved the stability of the WiFi and appears to have stopped the
continuous 'roaming'.  I will keep an eye on the dhcp logs at home and
report back if the 'ping during roam' continues.

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https://bugs.launchpad.net/bugs/1981366

Title:
  Intel AX201 / Thinkpad X1 Carbon Gen 9 returns ping during WiFi roam

Status in linux package in Ubuntu:
  Confirmed
Status in network-manager package in Ubuntu:
  New

Bug description:
  My Thinkpad X1 Carbon Gen 9 has started to return pings in the middle
  of WiFi roam events which is causing the IP address to change every
  time it roams on the WiFi network.  This is a huge problem for me
  because I install WiFi networks for a living but in general it causes
  every TCP connection over IPv4 to die every time the laptop roams to a
  new wifi cell.

  00:14.3 Network controller: Intel Corporation Wi-Fi 6 AX201 (rev 20)

  I tried kernel 5.15.0-40-generic and mainline kernel 5.17 and 5.18.

  Jul 11 20:11:15 littlebrat kernel: [620752.349053] wlp0s20f3: authenticate 
with 86:2a:a8:8b:05:cb
  Jul 11 20:11:15 littlebrat kernel: [620752.349074] wlp0s20f3: Invalid HE 
elem, Disable HE
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0110] 
device (wlp0s20f3): supplicant interface state: completed -> authenticating
  Jul 11 20:11:15 littlebrat kernel: [620752.354373] wlp0s20f3: send auth to 
86:2a:a8:8b:05:cb (try 1/3)
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0111] 
device (p2p-dev-wlp0s20f3): supplicant management interface state: completed -> 
authenticating
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0111] 
device (wlp0s20f3): ip:dhcp4: restarting
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0112] 
dhcp4 (wlp0s20f3): canceled DHCP transaction
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0112] 
dhcp4 (wlp0s20f3): activation: beginning transaction (timeout in 45 seconds)
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0112] 
dhcp4 (wlp0s20f3): state changed no lease
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0113] 
dhcp4 (wlp0s20f3): activation: beginning transaction (timeout in 45 seconds)
  Jul 11 20:11:15 littlebrat wpa_supplicant[1550]: wlp0s20f3: Trying to 
associate with 86:2a:a8:8b:05:cb (SSID='YesComputerSolutions-Private' freq=5540 
MHz)
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0463] 
device (wlp0s20f3): supplicant interface state: authenticating -> associating
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0464] 
device (p2p-dev-wlp0s20f3): supplicant management interface state: 
authenticating -> associating
  Jul 11 20:11:15 littlebrat kernel: [620752.390520] wlp0s20f3: authenticated
  Jul 11 20:11:15 littlebrat kernel: [620752.393074] wlp0s20f3: associate with 
86:2a:a8:8b:05:cb (try 1/3)
  Jul 11 20:11:15 littlebrat kernel: [620752.397915] wlp0s20f3: RX ReassocResp 
from 86:2a:a8:8b:05:cb (capab=0x1511 status=0 aid=4)
  Jul 11 20:11:15 littlebrat wpa_supplicant[1550]: wlp0s20f3: Associated with 
86:2a:a8:8b:05:cb
  Jul 11 20:11:15 littlebrat wpa_supplicant[1550]: wlp0s20f3: 
CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
  Jul 11 20:11:15 littlebrat kernel: [620752.406395] wlp0s20f3: associated
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0779] 
device (wlp0s20f3): supplicant interface state: associating -> associated
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0779] 
device (p2p-dev-wlp0s20f3): supplicant management interface state: associating 
-> associated
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0799] 
device (wlp0s20f3): supplicant interface state: associated -> 4way_handshake
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0800] 
device (p2p-dev-wlp0s20f3): supplicant management interface state: associated 
-> 4way_handshake
  Jul 11 20:11:15 littlebrat wpa_supplicant[1550]: wlp0s20f3: WPA: Key 
negotiation completed with 86:2a:a8:8b:05:cb [PTK=CCMP GTK=CCMP]
  Jul 11 20:11:15 littlebrat wpa_supplicant[1550]: wlp0s20f3: 
CTRL-EVENT-CONNECTED - Connection to 86:2a:a8:8b:05:cb completed [id=0 id_str=]
  Jul 11 20:11:15 littlebrat discord_discord.desktop[4119]: [2022-07-11 
20:11:15.091] [4119] (discord.cpp:551): JS console: 
["%c[GatewaySocket]","Performing an expedited heartbeat reason: network 
detected online."]
  Jul 11 20:11:15 littlebrat wpa_supplicant[1550]: wlp0s20f3: 
CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-66 noise=9999 txrate=26000
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0970] 
device (wlp0s20f3): supplicant interface state: 4way_handshake -> completed
  Jul 11 20:11:15 littlebrat NetworkManager[1519]: <info>  [1657566675.0975] 
device (p2p-dev-wlp0s20f3): supplicant management interface state: 
4way_handshake -> completed

  Jul 11 20:11:17 gateway-ycs dhcpd: DHCPDISCOVER from 5c:e4:2a:c3:f9:42 
(littlebrat) via br_v251
  Jul 11 20:11:17 gateway-ycs dhcpd: Abandoning IP address 172.16.251.221: 
pinged before offer
  Jul 11 20:11:19 gateway-ycs dhcpd: DHCPDISCOVER from 5c:e4:2a:c3:f9:42 via 
br_v251
  Jul 11 20:11:20 gateway-ycs dhcpd: DHCPOFFER on 172.16.251.220 to 
5c:e4:2a:c3:f9:42 (littlebrat) via br_v251
  Jul 11 20:11:20 gateway-ycs dhcpd: DHCPREQUEST for 172.16.251.220 
(172.16.251.254) from 5c:e4:2a:c3:f9:42 (littlebrat) via br_v251
  Jul 11 20:11:20 gateway-ycs dhcpd: DHCPACK on 172.16.251.220 to 
5c:e4:2a:c3:f9:42 (littlebrat) via br_v251

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: linux-tools-5.15.0-40 (not installed)
  ProcVersionSignature: Ubuntu 5.15.0-40.43-generic 5.15.35
  Uname: Linux 5.15.0-40-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alan       2413 F.... pulseaudio
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Jul 11 21:49:21 2022
  InstallationDate: Installed on 2022-06-05 (36 days ago)
  InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 
(20220419)
  MachineType: LENOVO 20XWCT01WW
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-40-generic 
root=/dev/mapper/vgubuntu-root ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-5.15.0-40-generic N/A
   linux-backports-modules-5.15.0-40-generic  N/A
   linux-firmware                             20220329.git681281e4-0ubuntu3.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/08/2022
  dmi.bios.release: 1.52
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N32ET76W (1.52 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20XWCT01WW
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.ec.firmware.release: 1.32
  dmi.modalias: 
dmi:bvnLENOVO:bvrN32ET76W(1.52):bd04/08/2022:br1.52:efr1.32:svnLENOVO:pn20XWCT01WW:pvrThinkPadX1CarbonGen9:rvnLENOVO:rn20XWCT01WW:rvrNODPK:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20XW_BU_Think_FM_ThinkPadX1CarbonGen9:
  dmi.product.family: ThinkPad X1 Carbon Gen 9
  dmi.product.name: 20XWCT01WW
  dmi.product.sku: LENOVO_MT_20XW_BU_Think_FM_ThinkPad X1 Carbon Gen 9
  dmi.product.version: ThinkPad X1 Carbon Gen 9
  dmi.sys.vendor: LENOVO

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