[Bug 1872159] Re: Boot animation never finishes when external monitors (or just more than one) are connected

[Tim Wetzel]

Thanks James. My configuration is different: the laptops in question are
in mechanical docks. The laptop remains closed (lid down); external
display is connected to the dock via HDMI, external keyboard and mouse
are also connected to the dock via USB dongle in the dock. So I can't
start them and then plug in the monitor very well: the external display
has to be primary.

I've also had this spinning logo and the forced powerdown that it forced
result in ACPI errors on the subsequent boots and shutdowns. We're not
sure whether this bug corrupted the ACPI table, or whether turning off
the splash screen exposed a latent bug in the BIOS. This is on a T440s.

I have changed splash quiet to splash noquiet and that -- so far --
avoids this hang with the spinning logo; but then I get the laptop going
into suspend as soon as the login password is entered. I'm not sure
whether the two bugs are related in terms of cause or not.

At first, I tried to just restart the docked machine to resume out of
suspend; but over a period of days Ubuntu became unstable. So I tried to
reload Ubuntu, and encountered the bug where the installer now crashes
when the third-party driver option is selected. I need that for nvidia
and sierra wireless hardware. Result is that machine is now sidelined,
with numerous failed reinstallation attempts.

I'm using a backup machine (which does NOT have any nvidia). I have grub
changed to nosplash. But I'm still getting the suspend on login
problem... so I'm just hoping that the developers get these bugs fixed
before the second machine goes down. Again, bug numbers for the other 3
items are in post 45 above.

We've got a T480 also, but it uses an external display connected to the
dock via DVI AND the laptop is run open with its own internal display as
primary. I'm hoping that I won't see problems there. So far so good with
that configuration, knock on wood...

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

Title:
  Boot animation never finishes when external monitors (or just more
  than one) are connected

Status in Plymouth:
  Unknown
Status in gdm3 package in Ubuntu:
  Confirmed
Status in plymouth package in Ubuntu:
  Triaged
Status in gdm3 source package in Focal:
  Confirmed
Status in plymouth source package in Focal:
  Triaged

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

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