[Bug 1872159] Re: booting with splash hangs when external monitors are connected

Tue Jul 28 15:08:27 UTC 2020

Hello,
It worked for me!
Thanks
Alberto

On Tue, Jul 28, 2020 at 3:55 AM Daniel van Vugt <1872159 at bugs.launchpad.net>
wrote:

> Please tell us if this also works around the problem:
>
> 1. Edit /etc/gdm3/custom.conf and uncomment:
>
>    #WaylandEnable=false
>
>    so it is now:
>
>    WaylandEnable=false
>
> 2. Reboot.
>
>
> ** Also affects: gdm3 (Ubuntu)
>    Importance: Undecided
>        Status: New
>
> ** Also affects: mutter (Ubuntu)
>    Importance: Undecided
>        Status: New
>
> ** Changed in: plymouth (Ubuntu)
>        Status: Triaged => Confirmed
>
> ** Changed in: mutter (Ubuntu)
>    Importance: Undecided => High
>
> ** Changed in: gdm3 (Ubuntu)
>    Importance: Undecided => High
>
> ** Changed in: gdm3 (Ubuntu)
>        Status: New => Confirmed
>
> ** Changed in: mutter (Ubuntu)
>        Status: New => Confirmed
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (1874194).
> https://bugs.launchpad.net/bugs/1872159
>
> Title:
>   booting with splash hangs when external monitors are connected
>
> Status in Plymouth:
>   Unknown
> Status in gdm3 package in Ubuntu:
>   Confirmed
> Status in mutter package in Ubuntu:
>   Confirmed
> Status in plymouth package in Ubuntu:
>   Confirmed
>
> Bug description:
>   I think this is a problem with the splash boot loader. This problem is
>   not reproduced if using nosplash.
>
>   I have installed 20.04 to this laptop. Thinkpad T480, i7, intel
>   graphics.
>
>   Clean install of 20.04 beta, not an upgrade.
>   When booting from the install, the greeter screen is never reached if
> external monitors are connected at startup.
>   I get the spinning ubuntu logo, and nothing more. I can not change to
> virtual terminals. The fsck step does not commence.
>
>   In recovery mood, I can log in.
>
>   With no external monitors attached, it works.
>
>   I am used to having such problems with Nvidia graphics is involved,
>   but this is not the case on this laptop. It has been happily running
>   18.04.
>
>   External displays are recognised if they are connected after login.
>
>   Also, when I edit /etc/default/grub so that it reads
>   GRUB_CMDLINE_LINUX_DEFAULT=""
>   (that is, splash disabled)
>   it works fine with two external monitors attached.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 20.04
>   Package: xorg 1:7.7+19ubuntu14
>   ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
>   Uname: Linux 5.4.0-21-generic x86_64
>   ApportVersion: 2.20.11-0ubuntu26
>   Architecture: amd64
>   BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
>   CasperMD5CheckResult: skip
>   CompositorRunning: None
>   CurrentDesktop: ubuntu:GNOME
>   Date: Sat Apr 11 13:58:19 2020
>   DistUpgraded: Fresh install
>   DistroCodename: focal
>   DistroVariant: ubuntu
>   DkmsStatus:
>    acpi-call, 1.1.0, 5.4.0-21-generic, x86_64: installed
>    tp_smapi, 0.43, 5.4.0-21-generic, x86_64: installed
>   ExtraDebuggingInterest: Yes, including running git bisection searches
>   GraphicsCard:
>    Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00
> [VGA controller])
>      Subsystem: Lenovo UHD Graphics 620 [17aa:225d]
>   InstallationDate: Installed on 2020-04-10 (0 days ago)
>   InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
>   MachineType: LENOVO 20L5S00F00
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic
> root=/dev/mapper/myvg-root ro
>   SourcePackage: xorg
>   Symptom: display
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 02/19/2020
>   dmi.bios.vendor: LENOVO
>   dmi.bios.version: N24ET56W (1.31 )
>   dmi.board.asset.tag: Not Available
>   dmi.board.name: 20L5S00F00
>   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: None
>   dmi.modalias:
> dmi:bvnLENOVO:bvrN24ET56W(1.31):bd02/19/2020:svnLENOVO:pn20L5S00F00:pvrThinkPadT480:rvnLENOVO:rn20L5S00F00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
>   dmi.product.family: ThinkPad T480
>   dmi.product.name: 20L5S00F00
>   dmi.product.sku: LENOVO_MT_20L5_BU_Think_FM_ThinkPad T480
>   dmi.product.version: ThinkPad T480
>   dmi.sys.vendor: LENOVO
>   version.compiz: compiz N/A
>   version.libdrm2: libdrm2 2.4.101-1
>   version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-1ubuntu1
>   version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.4-1ubuntu1
>   version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu2
>   version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
>   version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
>   version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.99.917+git20190815-1
>   version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/plymouth/+bug/1872159/+subscriptions
>

-- 
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https://bugs.launchpad.net/bugs/1872159

Title:
  booting with splash hangs when external monitors are connected

Status in Plymouth:
  Unknown
Status in gdm3 package in Ubuntu:
  Confirmed
Status in mutter package in Ubuntu:
  Confirmed
Status in plymouth package in Ubuntu:
  Confirmed

Bug description:
  I think this is a problem with the splash boot loader. This problem is
  not reproduced if using nosplash.

  I have installed 20.04 to this laptop. Thinkpad T480, i7, intel
  graphics.

  Clean install of 20.04 beta, not an upgrade.
  When booting from the install, the greeter screen is never reached if external monitors are connected at startup.
  I get the spinning ubuntu logo, and nothing more. I can not change to virtual terminals. The fsck step does not commence.

  In recovery mood, I can log in.

  With no external monitors attached, it works.

  I am used to having such problems with Nvidia graphics is involved,
  but this is not the case on this laptop. It has been happily running
  18.04.

  External displays are recognised if they are connected after login.

  Also, when I edit /etc/default/grub so that it reads
  GRUB_CMDLINE_LINUX_DEFAULT=""
  (that is, splash disabled)
  it works fine with two external monitors attached.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: xorg 1:7.7+19ubuntu14
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  ApportVersion: 2.20.11-0ubuntu26
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: skip
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Apr 11 13:58:19 2020
  DistUpgraded: Fresh install
  DistroCodename: focal
  DistroVariant: ubuntu
  DkmsStatus:
   acpi-call, 1.1.0, 5.4.0-21-generic, x86_64: installed
   tp_smapi, 0.43, 5.4.0-21-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, including running git bisection searches
  GraphicsCard:
   Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA controller])
     Subsystem: Lenovo UHD Graphics 620 [17aa:225d]
  InstallationDate: Installed on 2020-04-10 (0 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
  MachineType: LENOVO 20L5S00F00
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic root=/dev/mapper/myvg-root ro
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/19/2020
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N24ET56W (1.31 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20L5S00F00
  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: None
  dmi.modalias: dmi:bvnLENOVO:bvrN24ET56W(1.31):bd02/19/2020:svnLENOVO:pn20L5S00F00:pvrThinkPadT480:rvnLENOVO:rn20L5S00F00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
  dmi.product.family: ThinkPad T480
  dmi.product.name: 20L5S00F00
  dmi.product.sku: LENOVO_MT_20L5_BU_Think_FM_ThinkPad T480
  dmi.product.version: ThinkPad T480
  dmi.sys.vendor: LENOVO
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.101-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-1ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.4-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

To manage notifications about this bug go to:
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