Public bug reported:

When I have my screen resolution set to 1920 x 1080 (16:9), and I use my
KVM switch to change to my laptop, if I am 'away' for more than about 10
minutes, when I click back to my Ubuntu workstation, the display is set
to some very low, barely recognizable, resolution.  As a work-around, I
can click on System Settings and then click on Displays, and the screen
immediate flickers and then resets back to 1920 x 1080, without the need
for me to do anything else.  This is most annoying, and it was not seen
in previous versions of Ubuntu.

All I would like is the ability to lock the screen resolution so it
doesn't change on me automatically when I am using my KVM and am 'away'
for extended periods.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
Uname: Linux 3.5.0-21-generic i686
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86 Kernel Module  304.43  Sun Aug 19 20:20:21 PDT 
2012
 GCC version:  gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1)
.tmp.unity.support.test.0:
 
ApportVersion: 2.6.1-0ubuntu9
Architecture: i386
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Wed Jan  2 15:09:42 2013
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current, 304.43, 3.5.0-21-generic, i686: installed
 virtualbox, 4.1.18, 3.5.0-21-generic, i686: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 NVIDIA Corporation GT218 [GeForce 8400 GS] [10de:10c3] (rev a2) (prog-if 00 
[VGA controller])
   Subsystem: eVga.com. Corp. Device [3842:1302]
InstallationDate: Installed on 2013-01-01 (0 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-21-generic 
root=UUID=d4fbded6-3d00-4c42-8662-4471dfdd93e9 ro quiet splash
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/10/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.40
dmi.board.asset.tag: BC5FF4594FFA
dmi.board.name: 970DE3/U3S3
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd07/10/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rn970DE3/U3S3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
version.compiz: compiz 1:0.9.8.6-0ubuntu1
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 
1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

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


** Tags: apport-bug compiz-0.9 i386 quantal resolution running-unity ubuntu

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https://bugs.launchpad.net/bugs/1095419

Title:
  When using KVM switch, display reverts to low resolution

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