kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

David Abergel, thank you for taking the time to report this bug and
helping to make Ubuntu better. However, I am closing it because the bug
has been fixed in the latest development version of Ubuntu.

This is a significant bug in Ubuntu. If you need a fix for the bug in
previous versions of Ubuntu, please perform as much as possible of the
SRU Procedure [1] to bring the need to a developer's attention.

[1]: https://wiki.ubuntu.com/StableReleaseUpdates#Procedure

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

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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:
  Fix Released

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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