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[Bug 2113484] Re: plymouth-read-write.service delays boot

 

Unfortunately I submitted the bug report while booted into the "good"
kernel, so here's the dmesg of 6.11.0-26 when the problem occurred.

** Attachment added: "dmesg_6.11.0-26.txt"
   https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/2113484/+attachment/5882785/+files/dmesg_6.11.0-26.txt

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https://bugs.launchpad.net/bugs/2113484

Title:
  plymouth-read-write.service delays boot

Status in plymouth package in Ubuntu:
  New

Bug description:
  After a recent upgrade, there is a long delay between entering the LUKS password and seeing the login screen. Here are the top entries from my `systemd-analyze blame` when the problem occurs:
  1min 29.479s plymouth-read-write.service
        7.657s plymouth-quit-wait.service
        4.302s fwupd-refresh.service
        2.905s NetworkManager-wait-online.service
        2.060s snapd.seeded.service
        1.959s snapd.service
        1.853s boot-efi.mount
        1.497s fwupd.service
        1.491s gpu-manager.service
        1.126s NetworkManager.service
        1.050s docker.service

  This delay may be somehow to kernel 6.11.0-26. The above log is with
  6.11.0-26.

  If I choose the previous kernel version, 6.11.0-25, my log looks like this:
  7.559s plymouth-quit-wait.service
  2.804s NetworkManager-wait-online.service
  2.340s gpu-manager.service
  2.025s snapd.seeded.service
  1.932s snapd.service
  1.399s boot-efi.mount
  1.081s NetworkManager.service
  1.073s docker.service
   882ms plymouth-read-write.service

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: plymouth 24.004.60-1ubuntu7.1
  ProcVersionSignature: Ubuntu 6.11.0-25.25~24.04.1-generic 6.11.11
  Uname: Linux 6.11.0-25-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.6
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jun  7 22:55:09 2025
  DefaultPlymouth: /usr/share/plymouth/themes/bgrt/bgrt.plymouth
  InstallationDate: Installed on 2024-04-11 (423 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Beta amd64 (20240410.2)
  MachineType: LENOVO 82K8
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-6.11.0-25-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash amd_iommu=off acpi_backlight=native vt.handoff=7
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=alacritty
   XDG_RUNTIME_DIR=<set>
  ProcFB: 0 amdgpudrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.11.0-25-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash amd_iommu=off acpi_backlight=native vt.handoff=7
  SourcePackage: plymouth
  TextPlymouth: /usr/share/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/14/2024
  dmi.bios.release: 1.46
  dmi.bios.vendor: LENOVO
  dmi.bios.version: HACN46WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: LNVNB161216
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0T76461WIN
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Legion S7 15ACH6
  dmi.ec.firmware.release: 1.43
  dmi.modalias: dmi:bvnLENOVO:bvrHACN46WW:bd11/14/2024:br1.46:efr1.43:svnLENOVO:pn82K8:pvrLegionS715ACH6:rvnLENOVO:rnLNVNB161216:rvrSDK0T76461WIN:cvnLENOVO:ct10:cvrLegionS715ACH6:skuLENOVO_MT_82K8_BU_idea_FM_LegionS715ACH6:
  dmi.product.family: Legion S7 15ACH6
  dmi.product.name: 82K8
  dmi.product.sku: LENOVO_MT_82K8_BU_idea_FM_Legion S7 15ACH6
  dmi.product.version: Legion S7 15ACH6
  dmi.sys.vendor: LENOVO

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