At least in my case it's not just a 90 second delay. I once left the laptop alone assuming it was suspended. Hours later it was still stuck in the state I described.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1958007 Title: Regression in 5.13.0-23: laptop cannot suspend or turn off Status in linux package in Ubuntu: Confirmed Bug description: Starting from 5.13.0-23-lowlatency my laptop fails to suspend, turn off or reboot. On suspend the screen turns off, but the power button LED stays on (it should be blinking when suspended), the keyboard backlight and the CPU fan stays on. I cannot resume the laptop by pressing the power button or any other button. On power off and restart I see the splash screen and nothing happens. The last working Ubuntu kernel is 5.13.0-22-lowlatency. 5.13.0-23-lowlatency and 5.13.0-25-lowlatency are broken. I also tried the latest upstream mainline kernel, linux-image-unsigned-5.16.0-051600-lowlatency_5.16.0-051600.202201091830_amd64.deb, and it doesn't have this regression. This happens on a Lenovo IdeaPad Flex 5, the AMD variant (Ryzen 7 4700U). ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: linux-lowlatency 5.13.0.25.36 ProcVersionSignature: Ubuntu 5.13.0-23.23-lowlatency 5.13.19 Uname: Linux 5.13.0-23-lowlatency x86_64 ApportVersion: 2.20.11-0ubuntu71 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: dszoboszlay 2528 F.... pulseaudio /dev/snd/controlC0: dszoboszlay 2528 F.... pulseaudio CRDA: N/A CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Sat Jan 15 09:01:15 2022 InstallationDate: Installed on 2020-06-04 (589 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: LENOVO 81X2 ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.13.0-23-lowlatency root=/dev/mapper/vgubuntu-root ro quiet splash RelatedPackageVersions: linux-restricted-modules-5.13.0-23-lowlatency N/A linux-backports-modules-5.13.0-23-lowlatency N/A linux-firmware 1.201.3 SourcePackage: linux UpgradeStatus: Upgraded to impish on 2021-10-29 (77 days ago) dmi.bios.date: 10/15/2020 dmi.bios.release: 1.29 dmi.bios.vendor: LENOVO dmi.bios.version: EECN29WW dmi.board.asset.tag: No Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 31 dmi.chassis.vendor: LENOVO dmi.chassis.version: IdeaPad Flex 5 14ARE05 dmi.ec.firmware.release: 1.19 dmi.modalias: dmi:bvnLENOVO:bvrEECN29WW:bd10/15/2020:br1.29:efr1.19:svnLENOVO:pn81X2:pvrIdeaPadFlex514ARE05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct31:cvrIdeaPadFlex514ARE05:skuLENOVO_MT_81X2_BU_idea_FM_IdeaPadFlex514ARE05: dmi.product.family: IdeaPad Flex 5 14ARE05 dmi.product.name: 81X2 dmi.product.sku: LENOVO_MT_81X2_BU_idea_FM_IdeaPad Flex 5 14ARE05 dmi.product.version: IdeaPad Flex 5 14ARE05 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958007/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp