Hi, I also have the same problem as described by jdr-85 and skpp12. I'm on ubuntu 20.04 and tried using the latest mainline kernel but unfortunately the system won't boot so I had to revert to the kernel I had before. On the ssd corsair (mx500) where I installed ubuntu I noticed that when I restart the machine it turns off and on and this causes an increase in the "Unexpected Power Loss events" value. With the other distros or with windows or with the old versions of ubuntu this does not happen.
** Attachment added: "41 due to ubuntu's reboot" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1876753/+attachment/5431714/+files/power%20loss.PNG -- 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/1876753 Title: Thinkpad T430 Power Cycles instead of rebooting Status in linux package in Ubuntu: Incomplete Bug description: After installing Xubuntu 20.04, Thinkpad T430 does not reboot properly any more. Expected behavior: Power LED and HDD stay on, System reboots. Actual behavior: System switches off (including power LED and HDD which leads to emergency head parking and loud click noise) and switches back on after 5 seconds. Problem occurs with Xubuntu 20.04 and Ubuntu 20.04 even when booted from live USB medium. It also occurs with Mainline Kernel 5.6.7 which I installed for testing. It does not occur with several live media used for testing (Xubuntu 18.04, Windows 10, Manjaro 20, MX 19) or when rebooted from within GRUB2 on my Xubuntu installation. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-28-generic 5.4.0-28.32 ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30 Uname: Linux 5.4.0-28-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: david 1954 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: XFCE Date: Mon May 4 17:58:49 2020 HibernationDevice: RESUME=none InstallationDate: Installed on 2020-05-01 (3 days ago) InstallationMedia: Xubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: LENOVO 2351BH6 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-28-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-28-generic N/A linux-backports-modules-5.4.0-28-generic N/A linux-firmware 1.187 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/07/2019 dmi.bios.vendor: LENOVO dmi.bios.version: G1ETC2WW (2.82 ) dmi.board.asset.tag: Not Available dmi.board.name: 2351BH6 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG1ETC2WW(2.82):bd08/07/2019:svnLENOVO:pn2351BH6:pvrThinkPadT430:rvnLENOVO:rn2351BH6:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.family: ThinkPad T430 dmi.product.name: 2351BH6 dmi.product.sku: LENOVO_MT_2351 dmi.product.version: ThinkPad T430 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1876753/+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
