Public bug reported: 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 ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal ** Attachment added: "Video of behavior" https://bugs.launchpad.net/bugs/1876753/+attachment/5366285/+files/9154556-Video -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876753 Title: Thinkpad T430 Power Cycles instead of rebooting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1876753/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs