[Bug 2166810] [NEW] iwlwifi hanging after monitor lid shut and opened again

Public bug reported: After re-opening laptop, network manager / wpa supplicant 100% CPU usage. No network. iwlwifi 0000:02:00.0: Failed to get monitor header iwlwifi 0000:02:00.0: WRT: Failed to fill region header worker/u16:15:7016 is blocked on a mutex likely owned by task wpa_supplicant:1961 Only began to encounter this today. Show-stopping issue. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-31-generic 7.0.0-31.31 ProcVersionSignature: Ubuntu 7.0.0-31.31-generic 7.0.14 Uname: Linux 7.0.0-31-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: randy 3767 F.... wireplumber /dev/snd/seq: randy 3763 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Sep 8 15:30:39 2026 InstallationDate: Installed on 2026-05-01 (131 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 0c45:6717 Microdia Integrated_Webcam_HD Bus 001 Device 004: ID 0a5c:5832 Broadcom Corp. BCM5880 Secure Applications Processor Smartcard reader Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 002: ID 413c:81b6 Dell Computer Corp. DW5811e Snapdragon™ X7 LTE MachineType: Dell Inc. Latitude 7480 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-31-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/05/2024 dmi.bios.release: 1.40 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.40.0 dmi.board.name: 0F48ND dmi.board.vendor: Dell Inc. dmi.board.version: A02 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.40.0:bd11/05/2024:br1.40:svnDellInc.:pnLatitude7480:pvr:rvnDellInc.:rn0F48ND:rvrA02:cvnDellInc.:ct10:cvr:sku07A0:pfaLatitude: dmi.product.family: Latitude dmi.product.name: Latitude 7480 dmi.product.sku: 07A0 dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute wayland-session -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2166810 Title: iwlwifi hanging after monitor lid shut and opened again Status in linux package in Ubuntu: New Bug description: After re-opening laptop, network manager / wpa supplicant 100% CPU usage. No network. iwlwifi 0000:02:00.0: Failed to get monitor header iwlwifi 0000:02:00.0: WRT: Failed to fill region header worker/u16:15:7016 is blocked on a mutex likely owned by task wpa_supplicant:1961 Only began to encounter this today. Show-stopping issue. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-31-generic 7.0.0-31.31 ProcVersionSignature: Ubuntu 7.0.0-31.31-generic 7.0.14 Uname: Linux 7.0.0-31-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: randy 3767 F.... wireplumber /dev/snd/seq: randy 3763 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Sep 8 15:30:39 2026 InstallationDate: Installed on 2026-05-01 (131 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 0c45:6717 Microdia Integrated_Webcam_HD Bus 001 Device 004: ID 0a5c:5832 Broadcom Corp. BCM5880 Secure Applications Processor Smartcard reader Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 002: ID 413c:81b6 Dell Computer Corp. DW5811e Snapdragon™ X7 LTE MachineType: Dell Inc. Latitude 7480 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-31-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/05/2024 dmi.bios.release: 1.40 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.40.0 dmi.board.name: 0F48ND dmi.board.vendor: Dell Inc. dmi.board.version: A02 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.40.0:bd11/05/2024:br1.40:svnDellInc.:pnLatitude7480:pvr:rvnDellInc.:rn0F48ND:rvrA02:cvnDellInc.:ct10:cvr:sku07A0:pfaLatitude: dmi.product.family: Latitude dmi.product.name: Latitude 7480 dmi.product.sku: 07A0 dmi.sys.vendor: Dell Inc. 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