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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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  Plymouth, Wayland not working under 4.15

Status in linux package in Ubuntu:

Bug description:
  I just upgraded to bionic from artful and the kernel's graphics stack
  seems to be hosed. I can get text consoles, but neither plymouth nor
  Wayland GDM sessions work.

  X11 sessions do work however, e.g. by disabling Wayland for GDM3 in
  custom.conf or running startx from the console, however to get to that
  point you need to boot into a recovery session from the bootloader to
  avoid invoking the bootsplash, then proceed to boot normally from the
  recovery menu.

  If I boot into the 4.13 kernel I had leftover from artful, everything
  works fine.

  This is on a MacBookPro12,1 with an i7-5557U and Intel Iris 6100
  (Broadwell GT3) integrated GPU.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-10-generic 4.15.0-10.11
  ProcVersionSignature: Ubuntu 4.13.0-36.40-generic 4.13.13
  Uname: Linux 4.13.0-36-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
   /dev/snd/controlC1:  mjg        1452 F.... pulseaudio
   /dev/snd/controlC0:  mjg        1452 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Tue Mar 13 17:57:38 2018
  InstallationDate: Installed on 2015-07-22 (965 days ago)
  InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 
  MachineType: Apple Inc. MacBookPro12,1
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-36-generic 
root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash acpi_backlight=vendor 
   linux-restricted-modules-4.13.0-36-generic N/A
   linux-backports-modules-4.13.0-36-generic  N/A
   linux-firmware                             1.172
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install) 10/24/2016
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP121.88Z.0167.B18.1610241407 Mac-E43C1C25D4880AD6
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro12,1
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-E43C1C25D4880AD6
dmi:bvnAppleInc.:bvrMBP121.88Z.0167.B18.1610241407:bd10/24/2016:svnAppleInc.:pnMacBookPro12,1:pvr1.0:rvnAppleInc.:rnMac-E43C1C25D4880AD6:rvrMacBookPro12,1:cvnAppleInc.:ct9:cvrMac-E43C1C25D4880AD6: MacBook Pro MacBookPro12,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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