[Bug 1738490] Re: current boot config dims screen during initramfs

[Kai-Heng Feng]

That's because rootfs has systemd-backlight at .service to restore/save the
brightness value. Probably a good idea to do the same for initramfs.

** Also affects: initramfs-tools (Ubuntu)
   Importance: Undecided
       Status: New

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Title:
  current boot config dims screen during initramfs

Status in initramfs-tools package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is a weird one. Shortly after moving to 17.10, my laptop has
  started dimming its internal screen to minimum brightness at the start
  of initramfs execution. shortly thereafter it restores it to normal
  brightness, but that only happens *after* typing in encrypted
  filesystem passwords, so the password dialogues are practically
  invisible. Not sure why its doing this, but whatever's restoring the
  brightness should do it before prompting for filesystem mounting so
  these prompts are actually visible.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: linux-generic 4.13.0.19.20
  ProcVersionSignature: Ubuntu 4.13.0-19.22-generic 4.13.13
  Uname: Linux 4.13.0-19-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
  ApportVersion: 2.20.7-0ubuntu3.6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  tessa     17026 F.... pulseaudio
   /dev/snd/controlC1:  tessa     17026 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Fri Dec 15 13:44:02 2017
  InstallationDate: Installed on 2016-07-08 (524 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  MachineType: Apple Inc. MacBookPro11,4
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-19-generic.efi.signed root=ZFS=rpool/root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.13.0-19-generic N/A
   linux-backports-modules-4.13.0-19-generic  N/A
   linux-firmware                             1.169.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to artful on 2017-10-19 (57 days ago)
  dmi.bios.date: 08/08/2017
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP114.88Z.0177.B00.1708080033
  dmi.board.name: Mac-06F11FD93F0323C5
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro11,4
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-06F11FD93F0323C5
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP114.88Z.0177.B00.1708080033:bd08/08/2017:svnAppleInc.:pnMacBookPro11,4:pvr1.0:rvnAppleInc.:rnMac-06F11FD93F0323C5:rvrMacBookPro11,4:cvnAppleInc.:ct9:cvrMac-06F11FD93F0323C5:
  dmi.product.family: MacBook Pro
  dmi.product.name: MacBookPro11,4
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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