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[Bug 1520751] Re: Kernel 4.2 does not detect external monitor

 

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

As per http://www.dell.com/support/home/us/en/19/product-
support/product/xps-13-9343-laptop/drivers/advanced an update to your
computer's buggy and outdated BIOS is available (A07). If you update to
this following https://help.ubuntu.com/community/BIOSUpdate does it
address the issue?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see
https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette
.

Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful.

Also, you don't have to create a new bug report.

Once the BIOS is updated, if the problem is still reproducible, and the
information above is provided, then please mark this report Status
Confirmed. Otherwise, please mark this as Invalid.

Thank you for your understanding.

** Tags added: bios-outdated-a07

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

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

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https://bugs.launchpad.net/bugs/1520751

Title:
  Kernel 4.2 does not detect external monitor

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  On xubuntu 15.10.

  Kernel version 4.2.0-18-generic x86_64 does not detect an external
  monitor when it is connected via the minidisplay port. Using xrandr, I
  can force output to the monitor, but the maximum resolution is
  1024x768 (I think). Hardware is a Dell XPS 13.

  Upgrading to the mainline kernel in the 4.3 version stream eliminates
  the problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-18-generic 4.2.0-18.22
  ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
  Uname: Linux 4.2.0-18-generic x86_64
  NonfreeKernelModules: openafs
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  dabergel   1783 F.... pulseaudio
   /dev/snd/controlC0:  dabergel   1783 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Sat Nov 28 10:02:37 2015
  HibernationDevice: RESUME=UUID=703c29b7-4b30-449e-8da6-1f926373c84b
  InstallationDate: Installed on 2015-05-04 (207 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
  MachineType: Dell Inc. XPS 13 9343
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic root=UUID=1658dd66-913e-4ad3-8766-e821498ff4e7 ro nosmap quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-18-generic N/A
   linux-backports-modules-4.2.0-18-generic  N/A
   linux-firmware                            1.149.2
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: Upgraded to wily on 2015-10-31 (27 days ago)
  dmi.bios.date: 03/25/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 0F5KF3
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd03/25/2015:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0F5KF3:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9343
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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