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[Bug 1448429] [NEW] GNOME Flashback (Metacity): Compose Key not working as expected

 

Public bug reported:

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System
-> About Ubuntu

Description:	Ubuntu 15.04
Release:	15.04

2) The version of the package you are using, via 'apt-cache policy
pkgname' or by checking in Software Center

xorg:
  Installed: 1:7.7+7ubuntu4
  Candidate: 1:7.7+7ubuntu4

3) What you expected to happen

The key combination
AltGr + [ a
produces ä (latin small letter a with diaresis)

Works in GNOME Flashback (Compiz).

4) What happened instead

The key combination
AltGr + [ a
produces ¨a

Does not work in GNOME Flashback (Metacity).

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME-Flashback:Unity
Date: Sat Apr 25 13:05:09 2015
DistUpgraded: 2015-04-23 21:17:34,692 DEBUG enabling apt cron job
DistroCodename: vivid
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21da]
InstallationDate: Installed on 2013-10-28 (543 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: LENOVO 4291NA7
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=3b21f524-fe80-4ab0-8b84-c03e44abcd8b ro elevator=deadline quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to vivid on 2015-04-23 (1 days ago)
dmi.bios.date: 04/11/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET68WW (1.38 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4291NA7
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8DET68WW(1.38):bd04/11/2013:svnLENOVO:pn4291NA7:pvrThinkPadX220:rvnLENOVO:rn4291NA7:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4291NA7
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Sat Apr 25 13:04:39 2015
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                4204
 vendor                                     AUO
xserver.version: 2:1.17.1-0ubuntu3

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


** Tags: amd64 apport-bug ubuntu vivid

** Description changed:

  1) The release of Ubuntu you are using, via 'lsb_release -rd' or System
  -> About Ubuntu
  
  Description:	Ubuntu 15.04
  Release:	15.04
  
  UK International Keyboard
  
  2) The version of the package you are using, via 'apt-cache policy
  pkgname' or by checking in Software Center
  
  xorg:
-   Installed: 1:7.7+7ubuntu4
-   Candidate: 1:7.7+7ubuntu4
- 
+   Installed: 1:7.7+7ubuntu4
+   Candidate: 1:7.7+7ubuntu4
  
  3) What you expected to happen
  
  The key combination
  AltGr + [ a
- produces <code>¨a</code>
- AltGr + [ a produces letter <code>ä</code> (latin small letter a with diaresis).
+ produces ä (latin small letter a with diaresis)
  
  4) What happened instead
  
  The key combination
  AltGr + [ a
- produces <code>¨a</code>
+ produces ¨a
  
  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  .tmp.unity.support.test.0:
-  
+ 
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME-Flashback:Unity
  Date: Sat Apr 25 13:05:09 2015
  DistUpgraded: 2015-04-23 21:17:34,692 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: No
  GraphicsCard:
-  Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
-    Subsystem: Lenovo Device [17aa:21da]
+  Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
+    Subsystem: Lenovo Device [17aa:21da]
  InstallationDate: Installed on 2013-10-28 (543 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 4291NA7
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=3b21f524-fe80-4ab0-8b84-c03e44abcd8b ro elevator=deadline quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to vivid on 2015-04-23 (1 days ago)
  dmi.bios.date: 04/11/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET68WW (1.38 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4291NA7
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET68WW(1.38):bd04/11/2013:svnLENOVO:pn4291NA7:pvrThinkPadX220:rvnLENOVO:rn4291NA7:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4291NA7
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Sat Apr 25 13:04:39 2015
  xserver.configfile: default
  xserver.errors:
-  
+ 
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
-  product id                                4204 
-  vendor                                     AUO
+  product id                                4204
+  vendor                                     AUO
  xserver.version: 2:1.17.1-0ubuntu3

** Attachment removed: "BootLog.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383803/+files/BootLog.txt

** Attachment removed: "CurrentDmesg.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383804/+files/CurrentDmesg.txt

** Attachment removed: "DkmsStatus.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383806/+files/DkmsStatus.txt

** Attachment removed: "DpkgLog.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383807/+files/DpkgLog.txt

** Attachment removed: "GconfCompiz.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383808/+files/GconfCompiz.txt

** Attachment removed: "JournalErrors.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383809/+files/JournalErrors.txt

** Attachment removed: "LightdmDisplayLog.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383810/+files/LightdmDisplayLog.txt

** Attachment removed: "LightdmGreeterLog.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383811/+files/LightdmGreeterLog.txt

** Attachment removed: "LightdmGreeterLogOld.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383812/+files/LightdmGreeterLogOld.txt

** Attachment removed: "LightdmLog.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383813/+files/LightdmLog.txt

** Attachment removed: "Lspci.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383814/+files/Lspci.txt

** Attachment removed: "Lsusb.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383815/+files/Lsusb.txt

** Attachment removed: "MonitorsUser.xml.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383816/+files/MonitorsUser.xml.txt

** Attachment removed: "ProcCpuinfo.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383817/+files/ProcCpuinfo.txt

** Attachment removed: "ProcInterrupts.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383819/+files/ProcInterrupts.txt

** Attachment removed: "ProcModules.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383820/+files/ProcModules.txt

** Attachment removed: "UdevDb.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383821/+files/UdevDb.txt

** Attachment removed: "UdevLog.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383822/+files/UdevLog.txt

** Attachment removed: "UnitySupportTest.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383823/+files/UnitySupportTest.txt

** Attachment removed: "XorgLogOld.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383825/+files/XorgLogOld.txt

** Attachment removed: "xdpyinfo.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383827/+files/xdpyinfo.txt

** Attachment removed: "XorgLog.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383824/+files/XorgLog.txt

** Attachment removed: "xserver.devices.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383828/+files/xserver.devices.txt

** Attachment removed: "Xrandr.txt"
   https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1448429/+attachment/4383826/+files/Xrandr.txt

** Description changed:

  1) The release of Ubuntu you are using, via 'lsb_release -rd' or System
  -> About Ubuntu
  
  Description:	Ubuntu 15.04
  Release:	15.04
  
  UK International Keyboard
  
  2) The version of the package you are using, via 'apt-cache policy
  pkgname' or by checking in Software Center
  
  xorg:
    Installed: 1:7.7+7ubuntu4
    Candidate: 1:7.7+7ubuntu4
  
  3) What you expected to happen
  
  The key combination
  AltGr + [ a
  produces ä (latin small letter a with diaresis)
  
+ Works in Ubuntu Classic Compiz
+ 
  4) What happened instead
  
  The key combination
  AltGr + [ a
  produces ¨a
+ 
+ Does not work in Ubuntu Classic Metacity
+ 
  
  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  .tmp.unity.support.test.0:
  
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME-Flashback:Unity
  Date: Sat Apr 25 13:05:09 2015
  DistUpgraded: 2015-04-23 21:17:34,692 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: No
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21da]
  InstallationDate: Installed on 2013-10-28 (543 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 4291NA7
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=3b21f524-fe80-4ab0-8b84-c03e44abcd8b ro elevator=deadline quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to vivid on 2015-04-23 (1 days ago)
  dmi.bios.date: 04/11/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET68WW (1.38 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4291NA7
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET68WW(1.38):bd04/11/2013:svnLENOVO:pn4291NA7:pvrThinkPadX220:rvnLENOVO:rn4291NA7:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4291NA7
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Sat Apr 25 13:04:39 2015
  xserver.configfile: default
  xserver.errors:
  
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4204
   vendor                                     AUO
  xserver.version: 2:1.17.1-0ubuntu3

** Summary changed:

- Ubuntu Classic Metacity: Compose Key not working as expected
+ Ubuntu Flashback (Metacity): Compose Key not working as expected

** Description changed:

  1) The release of Ubuntu you are using, via 'lsb_release -rd' or System
  -> About Ubuntu
  
  Description:	Ubuntu 15.04
  Release:	15.04
- 
- UK International Keyboard
  
  2) The version of the package you are using, via 'apt-cache policy
  pkgname' or by checking in Software Center
  
  xorg:
    Installed: 1:7.7+7ubuntu4
    Candidate: 1:7.7+7ubuntu4
  
  3) What you expected to happen
  
  The key combination
  AltGr + [ a
  produces ä (latin small letter a with diaresis)
  
- Works in Ubuntu Classic Compiz
+ Works in Ubuntu Flashback (Compiz).
  
  4) What happened instead
  
  The key combination
  AltGr + [ a
  produces ¨a
  
- Does not work in Ubuntu Classic Metacity
- 
+ Does not work in Ubuntu Flashback (Metacity).
  
  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  .tmp.unity.support.test.0:
  
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME-Flashback:Unity
  Date: Sat Apr 25 13:05:09 2015
  DistUpgraded: 2015-04-23 21:17:34,692 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: No
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21da]
  InstallationDate: Installed on 2013-10-28 (543 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 4291NA7
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=3b21f524-fe80-4ab0-8b84-c03e44abcd8b ro elevator=deadline quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to vivid on 2015-04-23 (1 days ago)
  dmi.bios.date: 04/11/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET68WW (1.38 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4291NA7
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET68WW(1.38):bd04/11/2013:svnLENOVO:pn4291NA7:pvrThinkPadX220:rvnLENOVO:rn4291NA7:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4291NA7
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Sat Apr 25 13:04:39 2015
  xserver.configfile: default
  xserver.errors:
  
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4204
   vendor                                     AUO
  xserver.version: 2:1.17.1-0ubuntu3

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1448429

Title:
  GNOME Flashback (Metacity): Compose Key not working as expected

Status in xorg package in Ubuntu:
  New

Bug description:
  1) The release of Ubuntu you are using, via 'lsb_release -rd' or
  System -> About Ubuntu

  Description:	Ubuntu 15.04
  Release:	15.04

  2) The version of the package you are using, via 'apt-cache policy
  pkgname' or by checking in Software Center

  xorg:
    Installed: 1:7.7+7ubuntu4
    Candidate: 1:7.7+7ubuntu4

  3) What you expected to happen

  The key combination
  AltGr + [ a
  produces ä (latin small letter a with diaresis)

  Works in GNOME Flashback (Compiz).

  4) What happened instead

  The key combination
  AltGr + [ a
  produces ¨a

  Does not work in GNOME Flashback (Metacity).

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  .tmp.unity.support.test.0:

  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME-Flashback:Unity
  Date: Sat Apr 25 13:05:09 2015
  DistUpgraded: 2015-04-23 21:17:34,692 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: No
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21da]
  InstallationDate: Installed on 2013-10-28 (543 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 4291NA7
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=3b21f524-fe80-4ab0-8b84-c03e44abcd8b ro elevator=deadline quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to vivid on 2015-04-23 (1 days ago)
  dmi.bios.date: 04/11/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET68WW (1.38 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4291NA7
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET68WW(1.38):bd04/11/2013:svnLENOVO:pn4291NA7:pvrThinkPadX220:rvnLENOVO:rn4291NA7:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4291NA7
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Sat Apr 25 13:04:39 2015
  xserver.configfile: default
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4204
   vendor                                     AUO
  xserver.version: 2:1.17.1-0ubuntu3

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Follow ups

References