[Bug 2069039] Re: Disk password prompt isn't shown in external monitor

[Daniel van Vugt]

Timo is right I think. Secondary monitors will only wake up after:

1. The native kernel DRM graphics driver is loaded.
2. Plymouth detects the new driver and switches to it.

And the native kernel DRM graphics drivers seem to be loading slightly
later now that we have kicked them out of the initrd. In fact I think
there might be a hard limit where they can't even start loading until
the root FS is decrypted.

We want to keep those drivers out of the initrd because they've become
bloated, but also because they take so long (up to 10 seconds) to load
that they're not helpful to Plymouth wanting to display boot graphics
very early. So we rely on SimpleDRM for that instead, which apparently
can only display on the original BIOS display??

You should be able to work around it by adding 'amdgpu' to
'/etc/initramfs-tools/modules' and then run:

  sudo update-initramfs -k all -u




** Package changed: plymouth (Ubuntu) => initramfs-tools (Ubuntu)

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https://bugs.launchpad.net/bugs/2069039

Title:
  Disk password prompt isn't shown in external monitor

Status in initramfs-tools package in Ubuntu:
  Confirmed

Bug description:
  Up to Ubuntu 23.10, when my laptop (which has encrypted hard disk) booted, it asked for the deciphering password as usual, and, if an external monitor was connected, the prompt was shown in both the internal and the external screens. After updating to Ubuntu 24.04 this no longer is the case: the prompt is shown only in the internal screen, and the external one remains in powersave mode. After typing the password, the system begins to boot and, after some seconds (I presume that it's until the initramfs is pivoted), the external monitor wakes up and shows the remaining boot process.
  --- 
  ProblemType: Bug
  ApportVersion: 2.28.1-0ubuntu3
  Architecture: amd64
  BootLog: Error: [Errno 13] Permiso denegado: '/var/log/boot.log'
  CasperMD5CheckResult: pass
  CurrentDesktop: GNOME
  DefaultPlymouth: /usr/share/plymouth/themes/bgrt/bgrt.plymouth
  DistroRelease: Ubuntu 24.04
  InstallationDate: Installed on 2022-05-09 (764 days ago)
  InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
  MachineType: SLIMBOOK PROX14-AMD
  NonfreeKernelModules: zfs
  Package: plymouth 24.004.60-1ubuntu7
  PackageArchitecture: amd64
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-35-generic root=/dev/mapper/vgubuntu-root ro quiet splash acpi_backlight=video vt.handoff=7
  ProcFB: 0 amdgpudrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-35-generic root=/dev/mapper/vgubuntu-root ro quiet splash acpi_backlight=video vt.handoff=7
  ProcVersionSignature: Ubuntu 6.8.0-35.35-generic 6.8.4
  Tags: noble wayland-session
  TextPlymouth: /usr/share/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
  Uname: Linux 6.8.0-35-generic x86_64
  UpgradeStatus: Upgraded to noble on 2024-05-08 (34 days ago)
  UserGroups: adm cdrom dip docker kvm libvirt lpadmin lxd plugdev sambashare sudo swtpm vboxusers
  _MarkForUpload: True
  dmi.bios.date: 07/28/2022
  dmi.bios.release: 5.16
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N.1.07GRP05
  dmi.board.asset.tag: Standard
  dmi.board.name: PROX14-AMD
  dmi.board.vendor: SLIMBOOK
  dmi.board.version: Standard
  dmi.chassis.asset.tag: Standard
  dmi.chassis.type: 10
  dmi.chassis.vendor: SLIMBOOK
  dmi.chassis.version: Standard
  dmi.ec.firmware.release: 1.9
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN.1.07GRP05:bd07/28/2022:br5.16:efr1.9:svnSLIMBOOK:pnPROX14-AMD:pvrStandard:rvnSLIMBOOK:rnPROX14-AMD:rvrStandard:cvnSLIMBOOK:ct10:cvrStandard:sku0001:
  dmi.product.family: RENOIR
  dmi.product.name: PROX14-AMD
  dmi.product.sku: 0001
  dmi.product.version: Standard
  dmi.sys.vendor: SLIMBOOK
  modified.conffile..etc.default.apport:
   # set this to 0 to disable apport, or to 1 to enable it
   # you can temporarily override this with
   # sudo service apport start force_start=1
   enabled=0
  mtime.conffile..etc.default.apport: 2023-03-17T11:34:48.669034

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