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[Launchpad Bug Tracker <1563146@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/1563146

Title:
  lockup when using DVI and display port with skylake

Status in linux package in Ubuntu:
  Expired

Bug description:
  When using dual monitors, one connected to the dvi port, and one connected to the display port,
  and when nxclient 3.5.0-7 is running, the kernel will lock up about once a day, sometimes more often.

  after it has locked up, the mouse cursor doesn't move, caps lock doesn't toggle the keyboard light, the pc can't be pinged,
  there is nothing written in the logs about the crash.

  If nxclient isn't running, it doesn't lock up. I don't think it has
  locked up since switching to vga and dvi.

  I believe this is a skylake problem. I'm able to help test and debug
  if required and given instructions.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-34-generic 4.2.0-34.39
  ProcVersionSignature: Ubuntu 4.2.0-34.39-generic 4.2.8-ckt4
  Uname: Linux 4.2.0-34-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  michael    1805 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Tue Mar 29 12:26:58 2016
  HibernationDevice: RESUME=UUID=d420eadc-7df8-467a-a6f6-f8e02376eb4a
  InstallationDate: Installed on 2016-01-12 (76 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  IwConfig:
   enp3s0    no wireless extensions.
   
   lo        no wireless extensions.
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 046d:c31c Logitech, Inc. Keyboard K120
   Bus 001 Device 004: ID 046d:c03d Logitech, Inc. M-BT96a Pilot Optical Mouse
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: System manufacturer System Product Name
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-34-generic root=/dev/mapper/ubuntu--vg-root ro i915.preliminary_hw_support=1 i915.ips=0 quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-34-generic N/A
   linux-backports-modules-4.2.0-34-generic  N/A
   linux-firmware                            1.149.3
  RfKill:
   
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/16/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0902
  dmi.board.asset.tag: Default string
  dmi.board.name: H170M-E D3
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0902:bd11/16/2015:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnH170M-ED3:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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