Public bug reported:

I have a laptop with an external monitor connected. When the monitor is
connected, I only use the external monitor. Usually, when I unplug the
monitor, the screen switches automatically, i.e. the builtin screen
turns on; when I replug the external monitor, the builtin screen turns
off an the external monitor turns on.

A few minutes ago I unplugged the external monitor, and the builtin
screen became all white. I could see the mouse cursor on a white
background and nothing else. The mouse cursor moved smoothly, but I
could'nt do anything.

Keystrokes such as tab, atl+tab, ctrl+alt+T (to open a terminal),
Ctrl+Super+D, and the like, did absolutely nothing (or they do what they
are supposed to do but I couldn't see it because the screen remained
white.

Replugging the monitor didn't fix the issue. When I plugged the monitor,
the builtin screen would turn off, the external monitor would turn on
but I could only see a white rectangle (probably of the same size as the
laptop built in screen) on a black background, and the mouse cursor.

Switching between virtual terminals (i.e. Ctrl+Alt+F1 and Ctrl+Alt+F7)
worked, but wouldn't fix the issue.

I had no other option than reboot (which I had to do from the F1 virtual
terminal), obviously losing all my unsaved work because of such a stupid
bug, when probably all programs were running fine but invisibly.

Please tell me what can be done to force a "wake up" of the screen as a
workaround so next time this happens at least I don't have to reboot and
lose all my data.

I think this is a REGRESSION, or at least I had never, ever seen this
before in years of using ubuntu.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-33.48-generic 3.8.13.11
Uname: Linux 3.8.0-33-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.9.2-0ubuntu8.5
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
Date: Fri Nov 29 21:46:27 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 4.3.2, 3.8.0-32-generic, x86_64: installed
 vboxhost, 4.3.2, 3.8.0-33-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 
09) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0647]
 NVIDIA Corporation GF117M [GeForce 610M/710M / GT 620M/625M/630M/720M] 
[10de:1140] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] GeForce 710M [1025:0691]
InstallationDate: Installed on 2013-10-11 (49 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: Acer Aspire V3-571G
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-33-generic 
root=UUID=5830b30e-69e8-4bb4-8a2b-bc2b43c7414a ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/15/2012
dmi.bios.vendor: Acer
dmi.bios.version: V2.07
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: VA50_HC_CR
dmi.board.vendor: Acer
dmi.board.version: Type2 - Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V2.07
dmi.modalias: 
dmi:bvnAcer:bvrV2.07:bd10/15/2012:svnAcer:pnAspireV3-571G:pvrV2.07:rvnAcer:rnVA50_HC_CR:rvrType2-BoardVersion:cvnAcer:ct10:cvrV2.07:
dmi.product.name: Aspire V3-571G
dmi.product.version: V2.07
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1.1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.7-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.7-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4.3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Fri Nov 29 21:44:54 2013
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6.2
xserver.video_driver: intel

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug compiz-0.9 raring ubuntu

** Changed in: xorg (Ubuntu)
       Status: New => Confirmed

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1256425

Title:
  whole screen became blank white - no recovery possible - after
  unplugging and replugging external monitor

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https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1256425/+subscriptions

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