[Bug 2170475] [NEW] Closing the lid resulted in a dead-lock

Public bug reported: After closing the lid of the Laptop (HP Elitebook 840) the system did hang partly. After opening again, the Kubuntu/KDE Ui did work, but some commands in the shell like "sudo" stopped working. Trying to restart the either through the shell or the menu did not work. BIOS is up-to-date. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-38-generic 7.0.0-38.38 ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14 Uname: Linux 7.0.0-38-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mitosch 2055 F.... pipewire mitosch 2059 F.... wireplumber /dev/snd/pcmC0D0p: mitosch 2055 F...m pipewire /dev/snd/seq: mitosch 2055 F.... pipewire CasperMD5CheckResult: unknown CurrentDesktop: KDE Date: Sun Oct 11 08:15:59 2026 InstallationDate: Installed on 2026-10-06 (5 days ago) InstallationMedia: Kubuntu 26.04.1 LTS "Resolute Raccoon" - Release amd64 (20260826.1) MachineType: HP HP EliteBook 840 14 inch G10 Notebook PC ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic root=UUID=f56dacf8-dc22-4b6e-b2a0-b04d7b15d900 ro quiet splash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/08/2026 dmi.bios.release: 13.1 dmi.bios.vendor: HP dmi.bios.version: V70 Ver. 01.13.01 dmi.board.name: 8B41 dmi.board.vendor: HP dmi.board.version: KBC Version 51.47.00 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.ec.firmware.release: 81.71 dmi.modalias: dmi:bvnHP:bvrV70Ver.01.13.01:bd07/08/2026:br13.1:efr81.71:svnHP:pnHPEliteBook84014inchG10NotebookPC:pvrSBKPFV3:rvnHP:rn8B41:rvrKBCVersion51.47.00:cvnHP:ct10:cvr:sku6V5W7AV:pfa103C_5336ANHPEliteBook: dmi.product.family: 103C_5336AN HP EliteBook dmi.product.name: HP EliteBook 840 14 inch G10 Notebook PC dmi.product.sku: 6V5W7AV dmi.product.version: SBKPFV3 dmi.sys.vendor: HP ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute wayland-session ** Attachment added: "stack trace of the deadlock causing the hang" https://bugs.launchpad.net/bugs/2170475/+attachment/6008075/+files/ec-deadlock-trace.txt -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2170475 Title: Closing the lid resulted in a dead-lock Status in linux package in Ubuntu: New Bug description: After closing the lid of the Laptop (HP Elitebook 840) the system did hang partly. After opening again, the Kubuntu/KDE Ui did work, but some commands in the shell like "sudo" stopped working. Trying to restart the either through the shell or the menu did not work. BIOS is up-to-date. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-38-generic 7.0.0-38.38 ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14 Uname: Linux 7.0.0-38-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mitosch 2055 F.... pipewire mitosch 2059 F.... wireplumber /dev/snd/pcmC0D0p: mitosch 2055 F...m pipewire /dev/snd/seq: mitosch 2055 F.... pipewire CasperMD5CheckResult: unknown CurrentDesktop: KDE Date: Sun Oct 11 08:15:59 2026 InstallationDate: Installed on 2026-10-06 (5 days ago) InstallationMedia: Kubuntu 26.04.1 LTS "Resolute Raccoon" - Release amd64 (20260826.1) MachineType: HP HP EliteBook 840 14 inch G10 Notebook PC ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic root=UUID=f56dacf8-dc22-4b6e-b2a0-b04d7b15d900 ro quiet splash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/08/2026 dmi.bios.release: 13.1 dmi.bios.vendor: HP dmi.bios.version: V70 Ver. 01.13.01 dmi.board.name: 8B41 dmi.board.vendor: HP dmi.board.version: KBC Version 51.47.00 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.ec.firmware.release: 81.71 dmi.modalias: dmi:bvnHP:bvrV70Ver.01.13.01:bd07/08/2026:br13.1:efr81.71:svnHP:pnHPEliteBook84014inchG10NotebookPC:pvrSBKPFV3:rvnHP:rn8B41:rvrKBCVersion51.47.00:cvnHP:ct10:cvr:sku6V5W7AV:pfa103C_5336ANHPEliteBook: dmi.product.family: 103C_5336AN HP EliteBook dmi.product.name: HP EliteBook 840 14 inch G10 Notebook PC dmi.product.sku: 6V5W7AV dmi.product.version: SBKPFV3 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2170475/+subscriptions