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[Launchpad Bug Tracker <1494095@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1494095

Title:
  Dell U3414W screen not turning on in 3440 x 1440 mode

Status in linux package in Ubuntu:
  Expired

Bug description:
  Following on from https://answers.launchpad.net/ubuntu/+source
  /xserver-xorg-video-intel/+question/270926

  When I plug a Dell U3414W screen into my Dell XPS 13 9343 display port
  the screen does not turn on when I enable it's native 3440 x 1440 in
  the display settings.

  Lower resolutions correctly work such as:
  2560 x 1080
  1560 x 1440

  I also found these messages in the dmesg log:
  [ 308.637781] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun

  WORKAROUND: In Settings menu under Display disable "DP 1.2".

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
  ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4
  Uname: Linux 3.19.0-26-generic x86_64
  NonfreeKernelModules: wl
  .tmp.unity.support.test.0:

  ApportVersion: 2.17.2-0ubuntu1.3
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Thu Sep 10 11:56:31 2015
  DistUpgraded: Fresh install
  DistroCodename: vivid
  DistroVariant: ubuntu
  DkmsStatus:
   bcmwl, 6.30.223.248+bdcom, 3.19.0-22-generic, x86_64: installed
   bcmwl, 6.30.223.248+bdcom, 3.19.0-23-generic, x86_64: installed
   bcmwl, 6.30.223.248+bdcom, 3.19.0-25-generic, x86_64: installed
   bcmwl, 6.30.223.248+bdcom, 3.19.0-26-generic, x86_64: installed
   bcmwl, 6.30.223.248+bdcom, 3.19.0-28-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:0665]
  InstallationDate: Installed on 2015-06-20 (82 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Dell Inc. XPS 13 9343
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-26-generic.efi.signed root=UUID=b9c575ed-3fa1-4890-b4f2-b57441e8337d ro quiet splash vt.handoff=7
  SourcePackage: xserver-xorg-video-intel
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/14/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A05
  dmi.board.name: 0310JH
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA05:bd07/14/2015:svnDellInc.:pnXPS139343:pvr:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9343
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.9-2ubuntu1~vivid2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.9-2ubuntu1~vivid2
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Wed Sep  9 13:12:40 2015
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               41126
   vendor                                     DEL
  xserver.version: 2:1.17.1-0ubuntu3

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