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[Bug 1570780] [NEW] External Monitor makes System with Ubuntu 15.10 and Intel Graphics freeze

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Public bug reported:

A Lenovo ThinkPad L460 with Intel Graphics freezes, if an external
Monitor is connected via the docking station.

Please tell me if any information to solve this issue is needed.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-35-generic 4.2.0-35.40
ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
Uname: Linux 4.2.0-35-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  knut       1724 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Apr 15 11:56:45 2016
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=3ed9dcc5-0917-4be8-a2df-82cc2f5f36ef
InstallationDate: Installed on 2016-04-06 (9 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 04f2:b541 Chicony Electronics Co., Ltd 
 Bus 001 Device 005: ID 8087:0a2b Intel Corp. 
 Bus 001 Device 002: ID 138a:0011 Validity Sensors, Inc. VFS5011 Fingerprint Reader
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 20FVS01500
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-35-generic root=UUID=b6aaa9e7-c690-41f8-a56b-dc0043e4cc20 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-35-generic N/A
 linux-backports-modules-4.2.0-35-generic  N/A
 linux-firmware                            1.149.3
SourcePackage: linux
UdevLog: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/04/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: R08ET35W (1.09 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20FVS01500
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrR08ET35W(1.09):bd02/04/2016:svnLENOVO:pn20FVS01500:pvrThinkPadL460:rvnLENOVO:rn20FVS01500:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20FVS01500
dmi.product.version: ThinkPad L460
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug wily

-- 
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https://bugs.launchpad.net/bugs/1570780

Title:
  External Monitor makes System with Ubuntu 15.10 and Intel Graphics
  freeze

Status in linux package in Ubuntu:
  New

Bug description:
  A Lenovo ThinkPad L460 with Intel Graphics freezes, if an external
  Monitor is connected via the docking station.

  Please tell me if any information to solve this issue is needed.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-35-generic 4.2.0-35.40
  ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
  Uname: Linux 4.2.0-35-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  knut       1724 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Apr 15 11:56:45 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=3ed9dcc5-0917-4be8-a2df-82cc2f5f36ef
  InstallationDate: Installed on 2016-04-06 (9 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 04f2:b541 Chicony Electronics Co., Ltd 
   Bus 001 Device 005: ID 8087:0a2b Intel Corp. 
   Bus 001 Device 002: ID 138a:0011 Validity Sensors, Inc. VFS5011 Fingerprint Reader
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: LENOVO 20FVS01500
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-35-generic root=UUID=b6aaa9e7-c690-41f8-a56b-dc0043e4cc20 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-35-generic N/A
   linux-backports-modules-4.2.0-35-generic  N/A
   linux-firmware                            1.149.3
  SourcePackage: linux
  UdevLog: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/04/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: R08ET35W (1.09 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20FVS01500
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnLENOVO:bvrR08ET35W(1.09):bd02/04/2016:svnLENOVO:pn20FVS01500:pvrThinkPadL460:rvnLENOVO:rn20FVS01500:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20FVS01500
  dmi.product.version: ThinkPad L460
  dmi.sys.vendor: LENOVO

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