Thanks, my laptop is Hewlett-Packard HP Pavilion m6 -1035dx . Here is the
exact model on hp:
http://support.hp.com/us-en/document/c03383025
Thank you.

On Sat, May 2, 2015 at 9:00 AM Christopher M. Penalver <
<email address hidden>> wrote:

> Samuel, thank you for reporting this and helping make Ubuntu better.
> Could you please provide the full computer model as noted on the sticker
> of the computer itself (not from the Bug Description)?
>
> ** Changed in: xorg (Ubuntu)
>    Importance: Undecided => Low
>
> ** Changed in: xorg (Ubuntu)
>        Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1449621
>
> Title:
>   Connecting to external display turns off laptop screen
>
> Status in xorg package in Ubuntu:
>   Incomplete
>
> Bug description:
>   I'm using HP Pavilion m6 laptop with AMD A10. Connecting to external
>   monitor using normal VGA cable causes laptop monitor to turn off
>   permanently. disconnecting external display does not do anything.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 14.04
>   Package: xorg 1:7.7+1ubuntu8.1
>   ProcVersionSignature: Ubuntu 3.16.0-33.44~14.04.1-generic 3.16.7-ckt7
>   Uname: Linux 3.16.0-33-generic x86_64
>   .tmp.unity.support.test.0:
>
>   ApportVersion: 2.14.1-0ubuntu3.8
>   Architecture: amd64
>   CompizPlugins: No value set for
> `/apps/compiz-1/general/screen0/options/active_plugins'
>   CompositorRunning: compiz
>   CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
>   CompositorUnredirectFSW: true
>   CurrentDesktop: Unity
>   Date: Tue Apr 28 08:16:50 2015
>   DistUpgraded: Fresh install
>   DistroCodename: trusty
>   DistroVariant: ubuntu
>   DpkgLog:
>
>   ExtraDebuggingInterest: Yes, if not too technical
>   GraphicsCard:
>    Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7660G]
> [1002:9900] (prog-if 00 [VGA controller])
>      Subsystem: Hewlett-Packard Company Device [103c:18a6]
>   InstallationDate: Installed on 2015-03-30 (28 days ago)
>   InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64
> (20150218.1)
>   MachineType: Hewlett-Packard HP Pavilion m6 Notebook PC
>   ProcEnviron:
>    LANGUAGE=en_US
>    PATH=(custom, no user)
>    XDG_RUNTIME_DIR=<set>
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-33-generic
> root=UUID=0694a3e0-7768-4daa-837f-17aa85fc5462 ro quiet splash vt.handoff=7
>   SourcePackage: xorg
>   Symptom: display
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 09/23/2013
>   dmi.bios.vendor: Insyde
>   dmi.bios.version: F.35
>   dmi.board.asset.tag: Base Board Asset Tag
>   dmi.board.name: 18A6
>   dmi.board.vendor: Hewlett-Packard
>   dmi.board.version: 74.80
>   dmi.chassis.asset.tag: Chassis Asset Tag
>   dmi.chassis.type: 10
>   dmi.chassis.vendor: Hewlett-Packard
>   dmi.chassis.version: Chassis Version
>   dmi.modalias:
> dmi:bvnInsyde:bvrF.35:bd09/23/2013:svnHewlett-Packard:pnHPPavilionm6NotebookPC:pvr0791100000205610000620100:rvnHewlett-Packard:rn18A6:rvr74.80:cvnHewlett-Packard:ct10:cvrChassisVersion:
>   dmi.product.name: HP Pavilion m6 Notebook PC
>   dmi.product.version: 0791100000205610000620100
>   dmi.sys.vendor: Hewlett-Packard
>   version.compiz: compiz 1:0.9.11.3+14.04.20150122-0ubuntu1
>   version.ia32-libs: ia32-libs N/A
>   version.libdrm2: libdrm2 2.4.56-1~ubuntu2
>   version.libgl1-mesa-dri: libgl1-mesa-dri N/A
>   version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
>   version.libgl1-mesa-glx: libgl1-mesa-glx N/A
>   version.xserver-xorg-core: xserver-xorg-core N/A
>   version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
>   version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
>   version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
>   version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
>   xserver.bootTime: Tue Apr 28 08:02:11 2015
>   xserver.configfile: default
>   xserver.errors:
>
>   xserver.logfile: /var/log/Xorg.0.log
>   xserver.version: 2:1.16.0-1ubuntu1.2~trusty2
>   xserver.video_driver: radeon
>
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>