Public bug reported:

To switch workspaces I have shortcuts CTRL-1, CTRL-2, CTRL-3, etc. This
used to work fine until recently.

But now CTRL-1 gives "1" (ASCII 0x31), and CTRL-3 gives 0x1B (ASCII
<ESC>), CTRL-4 gives 0x1C, ... CTRL-8 gives 0x7F.

Here is how you can show the problem.
 * open a gnome-terminal on workspace 1
 * type CTRL-1 (we're already on workspace 1, so there is no switch)
 * see character "1" being inserted
 * open a gnome-terminal on workspace 8
 * type a few random characters
 * type CTRL-8 (we're already on workspace 8, so there is no switch)
 * see how characters are deleted

Of course you can use xev too to see what XLookupString makes of the key 
presses. For completeness this is what I see:
 CTRL-1 => 0x31
 CTRL-2 => 0x00
 CTRL-3 => 0x1B
 CTRL-4 => 0x1C
 CTRL-5 => 0x1D
 CTRL-6 => 0x1E
 CTRL-7 => 0x1F
 CTRL-8 => 0x7F
 CTRL-9 => 0x39
 CTRL-0 => 0x30

I doesn't matter what kind of keyboard is used. (Note that I have a mac
keyboard, but I have tried a regular PC keyboard too.) I've created a
new user account to eliminate possible mess up of some user setting.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+10ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
Uname: Linux 3.2.0-19-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
CompizPlugins: 
[core,bailer,detection,composite,opengl,decor,compiztoolbox,move,mousepoll,wall,place,regex,gnomecompat,snap,grid,animation,vpswitch,fade,workarounds,resize,imgpng,session,scale,expo,unitymtgrabhandles,ezoom,unityshell]
CompositorRunning: compiz
Date: Wed Mar 21 11:27:59 2012
DistUpgraded: 2012-02-22 08:43:22,630 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI Whistler [AMD Radeon HD 6600M Series] 
[1002:6741] (prog-if 00 [VGA controller])
   Subsystem: Apple Inc. Device [106b:00e8]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Apple Inc. Macmini5,2
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-19-generic 
root=UUID=bc18fc60-4c3a-487b-837c-ee9d84b83675 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to precise on 2012-02-22 (28 days ago)
dmi.bios.date: 10/14/2011
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MM51.88Z.0077.B0E.1110141154
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-4BC72D62AD45599E
dmi.board.vendor: Apple Inc.
dmi.board.version: Macmini5,2
dmi.chassis.type: 16
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-4BC72D62AD45599E
dmi.modalias: 
dmi:bvnAppleInc.:bvrMM51.88Z.0077.B0E.1110141154:bd10/14/2011:svnAppleInc.:pnMacmini5,2:pvr1.0:rvnAppleInc.:rnMac-4BC72D62AD45599E:rvrMacmini5,2:cvnAppleInc.:ct16:cvrMac-4BC72D62AD45599E:
dmi.product.name: Macmini5,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.7.0+bzr3035-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.30-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20111201+b5534a1-1build2

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


** Tags: amd64 apport-bug compiz-0.9 precise reproducible single-occurrence 
ubuntu

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https://bugs.launchpad.net/bugs/961056

Title:
  CTRL-1 gives "1", CTRL-3 gives <ESC>

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