It looks like plymouthd is getting stuck in the kernel, and the most likely cause for that would be the nouveau driver.
Please open the 'Additional Drivers' app and use it to install an official Nvidia driver instead. ** Summary changed: - Boot issue + watchdog: BUG: soft lockup - CPU#0 stuck for ... [plymouthd:371] ** Tags added: nouveau ** Summary changed: - watchdog: BUG: soft lockup - CPU#0 stuck for ... [plymouthd:371] + [nouveau] watchdog: BUG: soft lockup - CPU#0 stuck for ... [plymouthd:371] ** Summary changed: - [nouveau] watchdog: BUG: soft lockup - CPU#0 stuck for ... [plymouthd:371] + watchdog: BUG: soft lockup - CPU#0 stuck for ... [plymouthd:371] ** Package changed: ubuntu => linux (Ubuntu) ** Package changed: linux (Ubuntu) => linux-hwe-5.15 (Ubuntu) -- 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/1983108 Title: watchdog: BUG: soft lockup - CPU#0 stuck for ... [plymouthd:371] Status in linux-hwe-5.15 package in Ubuntu: Incomplete Bug description: It caused my pc to get stuck during boot time. At rebooting, all worked fine ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: plymouth 0.9.4git20200323-0ubuntu6.2 ProcVersionSignature: Ubuntu 5.15.0-41.44~20.04.1-generic 5.15.39 Uname: Linux 5.15.0-41-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 BootLog: Error: [Errno 13] Permesso negato: '/var/log/boot.log' CasperMD5CheckResult: skip CurrentDesktop: XFCE Date: Fri Jul 29 16:13:04 2022 DefaultPlymouth: /usr/share/plymouth/themes/xubuntu-logo/xubuntu-logo.plymouth InstallationDate: Installed on 2020-10-02 (664 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) MachineType: System manufacturer System Product Name ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-41-generic root=UUID=ec6d1b78-08d0-4212-889f-df1909dbc8fa ro quiet splash ProcFB: 0 nouveaudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-41-generic root=UUID=ec6d1b78-08d0-4212-889f-df1909dbc8fa ro quiet splash SourcePackage: plymouth TextPlymouth: /usr/share/plymouth/themes/xubuntu-text/xubuntu-text.plymouth UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/20/2009 dmi.bios.release: 4.8 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0408 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5QL/EPU dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0408:bd07/20/2009:br4.8:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5QL/EPU:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:skuToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: System Product Name dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.15/+bug/1983108/+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
