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[Steve Beaulac <1234546@xxxxxxxxxxxxxxxxxx>]

I'm sure when you enabled the "Load Legacy Option Rom" the bios
initialize some of the hardware differently then when that option is
disabled.

I'm sure that I'm booting with the efi kernel

Command line: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic.efi.signed

** Attachment added: "dmesg"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234546/+attachment/3884363/+files/dmesg

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https://bugs.launchpad.net/bugs/1234546

Title:
  Plymouth screen refresh is bad when Live USB is started in UEFI mode

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Test computer : Dell XPS 13 L322x with Intel Graphics HD4000.

  I burnt a Live Ubuntu Gnome 13.10 USB, first with the Beta 1, and with
  the 2013-09-30 daily image. This USB key has been created with Rufus
  under Windows and is compliant for both UEFI and Bios mode.

  If I boot on the key in Bios mode, no problem, I see the first screen
  in text mode (Install, test only...). After having chosen "test only",
  I see the Gnome footprint and everything runs.

  If I boot the key in UEFI mode (SecureBoot is disabled), I see the
  first screen. After having chosen "test only", plymouth starts but the
  screen refresh frequency is bad, so I have many footprints on the
  screen, etc.

  Everything seems to run fine also, except this screen refresh
  frequency.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: plymouth 0.8.8-0ubuntu8
  ProcVersionSignature: Ubuntu 3.11.0-9.16-generic 3.11.2
  Uname: Linux 3.11.0-9-generic x86_64
  ApportVersion: 2.12.5-0ubuntu1
  Architecture: amd64
  Date: Thu Oct  3 09:00:43 2013
  DefaultPlymouth: /lib/plymouth/themes/ubuntu-gnome-logo/ubuntu-gnome-logo.plymouth
  InstallationDate: Installed on 2013-09-22 (10 days ago)
  InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha amd64 (20130903)
  MachineType: Dell Inc. Dell System XPS L322X
  MarkForUpload: True
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-9-generic.efi.signed root=UUID=529ee009-cfab-4b00-832d-5390f382f988 ro quiet splash vt.handoff=7
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-9-generic.efi.signed root=UUID=529ee009-cfab-4b00-832d-5390f382f988 ro quiet splash vt.handoff=7
  SourcePackage: plymouth
  TextPlymouth: /lib/plymouth/themes/ubuntu-gnome-text/ubuntu-gnome-text.plymouth
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/15/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A09
  dmi.board.name: 0PJHXN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA09:bd05/15/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Dell System XPS L322X
  dmi.sys.vendor: Dell Inc.

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