"Software updater" incon is displayed in the left hand menu when new updates are available but I can not click on it

[Janno]

I am not a 100% sure if this is a problem caused by the "update-manager" package or "update-notifier" or unity.
If needed I can reproduce this the next time there are updates available and report it to some other package or enhance this report. I have also used cli for some years so let me know if I can do anything else.

I have also seen that there are several "popular bug reports" that look similar but I am going to go by the guideline that duplicate reports are not a bad thing and the developer knows better if it is a duplicate or not.
I have had this bug for a while.

I have checked and these are things that do not let me see the update manager window itself:
* Click
* Double click
* Alt+tab (I can see the icon in the list)
* I do not have second monitor attached. I have had it configured at some point in the past
* It is not on any of the other workspaces

I can also see the process in pstree output:
  | | | |-update-manager,16121 /usr/bin/update-manager --no-update --no-focus-on-map
  | | | | |-{update-manager},16128
  | | | | `-{update-manager},16129

This might also be of interest:
$> xwininfo -name 'Software Updater'

xwininfo: Window id: 0x4e00008 "Software Updater"

  Absolute upper-left X: 610
  Absolute upper-left Y: 302
  Relative upper-left X: 610
  Relative upper-left Y: 302
  Width: 444
  Height: 319
  Depth: 24
  Visual: 0x21
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x20 (installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsUnMapped
  Override Redirect State: no
  Corners: +610+302 -546+302 -546-279 +610-279
  -geometry 444x319+610+302

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: update-manager 1:0.196.12
ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10
Uname: Linux 3.13.0-40-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Aptdaemon:

Architecture: amd64
CurrentDesktop: Unity
Date: Tue Dec 2 09:44:35 2014
DpkgHistoryLog.txt:

DpkgTerminalLog.txt:

ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'876'
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'window-width' b'1535'
 b'com.ubuntu.update-manager' b'launch-time' b'1417510549'
InstallationDate: Installed on 2013-01-03 (698 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
InterpreterPath: /usr/bin/python3.4
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: Upgraded to trusty on 2014-08-07 (116 days ago)

Running `sudo apt-get update` does not solve the problem. I can also open "software centre" and install software from cli.

I tried to start update-manager from cli without closeing anything but this also does not help. It also doesn't give any output.

Locking and unlocking to launcher did not do anything.

I can choose Install all available updates from the right-click menu and this works. Process called "update-apt-xapi" is stared and updates are installed. Also the package manager is locked for that time. (can not update package index at the same time).

Quit option from the right click menu works. After quitting I can start the update-manager from cli and now it is fully functional.