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[Bug 1234546] Re: 8086:0166 [Dell XPS 13 L322X] Plymouth screen refresh is bad when Live USB is started in UEFI mode

 

Romuald, thank you for providing the requested information, and for
testing Trusty. Regarding the problem noted in the Bug Description,
would you need a backport to a release prior to Trusty LTS, or may this
be closed as Status Invalid?

Regarding screen backlight not being controllable, it would be best to file a new report about it via a terminal:
ubuntu-bug linux

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

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Title:
  8086:0166 [Dell XPS 13 L322X] Plymouth screen refresh is bad when Live
  USB is started in UEFI mode

Status in “linux” package in Ubuntu:
  Incomplete

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
  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.

  WORKAROUND: 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.

  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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