Probably this bug has been marked invalid because there is a mix of two
bugs here: one is related to panning (which I do not know if it's fixed
or no), and the other one to mouse constraints when scaling.

I have X.Org X Server 1.14.5 , and if I issue

xrandr --output LVDS1 --scale 2x2

the screen scales correctly, but then the mouse is restricted to the
(original 1x1 viewport) upper left quarter of the screen, making the
scaling completely unuseful.

It is quite easily reproducible.

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https://bugs.launchpad.net/bugs/881046

Title:
  Panning in a virtual monitor is not possible after upgrade to Ubuntu
  11.10

Status in X.Org X server:
  Incomplete
Status in “xorg-server” package in Ubuntu:
  Triaged
Status in “xorg-server” source package in Precise:
  Triaged

Bug description:
  When I go  for a virtual monitor by issuing command "xrandr --output
  LVDS1 --fb 1600x1200 --panning 1600x1200" on a monitor working at
  resolution 1024x768 (as I did before upgrading from Ubuntu 11.04 to
  Ubuntu 11.10), the WM bars on top and left side of the screen (in
  Unity) look like extending to the new area, but I cannot move the
  pointer to the new extra area and so I cannot pan. As far as I
  understood by reading around, this *could* be a bug in package "xorg-
  server" rather than in "xrandr" and *could* be related to the
  boundaries set for cursor position.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: xorg 1:7.6+7ubuntu7
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic i686
  .tmp.unity.support.test.0:
   
  ApportVersion: 1.23-0ubuntu3
  Architecture: i386
  CompizPlugins: 
[core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
  CompositorRunning: compiz
  Date: Mon Oct 24 20:40:14 2011
  DistUpgraded: Log time: 2011-10-22 12:17:44.515205
  DistroCodename: oneiric
  DistroVariant: ubuntu
  DkmsStatus:
   dahdi, 2.4.1+dfsg-1ubuntu2, 2.6.38-11-generic, i686: installed (WARNING! 
Diff between built and installed module!)
   dahdi, 2.4.1+dfsg-1ubuntu2, 3.0.0-12-generic, i686: installed (WARNING! Diff 
between built and installed module!)
   dahdi, 2.4.1+dfsg-1ubuntu2, 3.0.0-12-virtual, i686: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller 
[8086:2592] (rev 03) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:0182]
     Subsystem: Dell Device [1028:0182]
  MachineType: Dell Inc. Latitude D610
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     3.3V 32-bit PC Card
  ProcEnviron:
   SHELL=/bin/bash
   PATH=(custom, no user)
   LANG=it_IT.UTF-8
   LANGUAGE=it_IT:it:en_GB:en
  ProcKernelCmdLine: root=UUID=35d17829-2597-405b-afdd-6b1d94a4dedd ro quiet 
splash rootdelay=15
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to oneiric on 2011-10-22 (2 days ago)
  dmi.bios.date: 03/02/2005
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 0D4571
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA03:bd03/02/2005:svnDellInc.:pnLatitudeD610:pvr:rvnDellInc.:rn0D4571:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude D610
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu3
  version.libdrm2: libdrm2 2.4.26-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
  version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 
1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20110411+8378443-1

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