← Back to team overview

desktop-packages team mailing list archive

[Bug 1533702] Re: Only 2 monitors detected via laptop docking station


JGJones, thank you for reporting this and helping make Ubuntu better.

As per http://www.dell.com/support/home/us/en/19/product-
support/product/precision-m4800-workstation/drivers/advanced an update
to your computer's buggy and outdated BIOS is available (A16). If you
update to this following https://help.ubuntu.com/community/BIOSUpdate
does it change anything?

For more on BIOS updates and linux, please see

Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful. As well, you don't
have to create a new bug report.

Once the BIOS is updated, if the problem is still reproducible:
1) Please provide the output of the following terminal command (not perform an apport-collect):
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
2) Please make a comment specifically advising on if there was an improvement or not.
3) Please mark this report Status New. If it's not reproducible, please mark this as Invalid.

Thank you for your understanding.

** Tags added: bios-outdated-a16

** Changed in: xorg (Ubuntu)
   Importance: Undecided => Low

** Changed in: xorg (Ubuntu)
       Status: New => Incomplete

You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.

  Only 2 monitors detected via laptop docking station

Status in xorg package in Ubuntu:

Bug description:
  Ubuntu 15.04
  Linked to this bug - https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1382462

  Laptop is a Dell Precision M4800.

  Dell docking station is used, and this docking station comes with 2 x
  DVI, 2 x DisplayPort and 1 x VGA ports.

  I have 2 x 1980x1080 monitors - one is using DVI and the other on
  DisplayPort and both are detected fine.

  I also have a "spare" 20" monitor that is 1680x900 and only take VGA
  and this is plugged in.

  The laptop is configured to disable the use of Intel GPU and to use
  Nvidia GPU at all times.

  With nvidia-settings installed:

  On the login screen - all 4 displays are on (including laptop)
  although going to the VGA/laptop screen cause the screen to "scroll"
  with the cursor.

  After login - after much work which resulted in just the two HD
  monitors showing output and is configured via nvidia-settings. It only
  detects two displays.

  BUT going to the Display Settings - it shows all 4 screens and any
  attempts in using this can break things, Display Settings also freeze
  on every action for a short period of time.

  On a whim I decided to uninstall nvidia-settings to see how it might
  affect things.

  Display Settings now works without issues and it show only two
  detected screens - it does not detect the laptop screen or the VGA

  What I expected:

  All 4 displays to be working but at a minimum all 3 external displays
  to be working, the laptop screen would be a bonus

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
  Uname: Linux 4.2.0-23-generic x86_64
  NonfreeKernelModules: bbswitch nvidia_modeset nvidia
  .proc.driver.nvidia.registry: Binary: ""
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  361.16  Tue Dec 29 23:02:26 PST 2015
   GCC version:  gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2)
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Wed Jan 13 14:37:32 2016
  DistUpgraded: Fresh install
  DistroCodename: wily
  DistroVariant: ubuntu
   nvidia-361, 361.16, 4.2.0-23-generic, x86_64: installed
   vboxhost, 5.0.12, 4.2.0-22-generic, x86_64: installed
   vboxhost, 5.0.12, 4.2.0-23-generic, x86_64: installed
   Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:05cc]
   NVIDIA Corporation GK106GLM [Quadro K2100M] [10de:11fc] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:15cc]
  InstallationDate: Installed on 2015-10-15 (90 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150924)
  MachineType: Dell Inc. Precision M4800
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-23-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro noprompt quiet nomdmonddf nomdmonisw
  SourcePackage: xorg
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/19/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A14
  dmi.board.name: 0V5GVY
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA14:bd05/19/2015:svnDellInc.:pnPrecisionM4800:pvr01:rvnDellInc.:rn0V5GVY:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Precision M4800
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.64-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3

To manage notifications about this bug go to: