Alt-Tab, Keyboard shortcuts - ALT-TAB hides application while showing a messagebox

Reported by 2green on 2012-06-15
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ayatana Design
Medium
John Lea
Unity
Medium
Unassigned
unity (Ubuntu)
Medium
Unassigned

Bug Description

for example using calibre (an e-book manager).

Pre condition:
- Install Calibre (ebook manager)
- use a mounted drive to set calibre's library location
- Unmount the drive where calibre looks for its ebook library.

Test case:
- Open an application, eg firefox.
- Open calibre (Calibre gives an error on startup because the drive is not mounted)
- Swith to an other application using alt-tab
- Switch back to caliber.

Expected behaviour:
- Calibre is shown

Current behaviour:
- Calibre is not present in the alt-tab menu (you can not swith back to caliber)

Extra information:
Added an screenshot for calibre giving the error message.
Starting calibre again is not possible because calibre is still running (but not vissible using alt-tab).
This behaviour is true for other applications as well.

---
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
DistroCodename: precise
DistroRelease: Ubuntu 12.04
DistroVariant: ubuntu
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
Package: unity 5.12-0ubuntu1.1
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Tags: precise precise precise ubuntu
Uname: Linux 3.2.0-25-generic x86_64
UnreportableReason: Please work this issue through technical support channels first.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

2green (zendhetmij) wrote :
2green (zendhetmij) on 2012-06-16
summary: - alt tab does not show application while giving an error message
+ Keyboard shortcuts - ALT-TAB ignores application with error message
summary: - Keyboard shortcuts - ALT-TAB ignores application with error message
+ Keyboard shortcuts - ALT-TAB hides application with error message
2green (zendhetmij) on 2012-06-19
summary: - Keyboard shortcuts - ALT-TAB hides application with error message
+ Keyboard shortcuts - ALT-TAB hides application while showing a
+ messagebox

I'm also noticing this same problem with LibreOffice writer.

Opened libreOffice writer
Show navigator (F5)
Dock navigator (ctrl + click on gray area in navigator window)
Alt+Tab to show currently running apps.

* Expected behavior
LibreOffice writer is visible in alt+tab menu

* current behavior
Writer is not visible

* more information
Screen shot included... using a camera due to the applet bug :(

2green (zendhetmij) wrote :
John Lea (johnlea) on 2012-06-19
tags: added: udp
summary: - Keyboard shortcuts - ALT-TAB hides application while showing a
+ Alt-Tab, Keyboard shortcuts - ALT-TAB hides application while showing a
messagebox
Changed in ayatana-design:
assignee: nobody → John Lea (johnlea)
importance: Undecided → Medium
status: New → Triaged
Changed in unity:
status: New → Triaged
Changed in unity (Ubuntu):
status: New → Triaged
Changed in unity:
milestone: none → backlog

apport information

tags: added: apport-collected precise ubuntu
description: updated

apport information

Tim Penhey (thumper) on 2012-09-14
Changed in unity:
milestone: backlog → none
John Lea (johnlea) on 2012-09-19
Changed in ayatana-design:
status: Triaged → Fix Committed
2green (zendhetmij) wrote :

test: Problem still occurs in ubuntu 12.10 with latest updates till 04-10-2012.

Hides libre office and calibre (other apps not tested).

John Lea (johnlea) on 2012-10-09
Changed in unity:
importance: Undecided → Medium
Changed in unity (Ubuntu):
importance: Undecided → Medium
2green (zendhetmij) on 2013-03-31
description: updated
2green (zendhetmij) wrote :

Retested, stil exists on 13.10

Really... no one noticed this problem??? Sometimes I thinks I'm the only one really using the desktop, shortcuts and mouse.... Linux nerds! ;)

Kind regards,

The desktop power user noob.

Stephen M. Webb (bregma) on 2013-10-10
Changed in unity:
milestone: none → 7.2.0
Christopher Townsend (townsend) wrote :

I've taken a look at this and here is what I've found.

Regarding Calibre, the issue is that the error message pops up before the application has finished starting and presented its icon. Since there is no icon yet associated with Calibre and it hasn't finished starting, there isn't anything we can do in Unity to show the application in the Alt-Tab switcher.

Regarding LibreOffice Writer, I'm unable to reproduce the behavior you describe. I docked Navigator to the left of the Writer and I still get LibreOffice in the Alt-Tab switcher.

Since the behavior is either out of Unity's control or unreproducible, I'm marking this Invalid. If you find another reproduction case that I can try, then please feel free to post it here.

Thanks!

Changed in unity:
status: Triaged → Invalid
Changed in unity (Ubuntu):
status: Triaged → Invalid
Changed in unity:
milestone: 7.2.0 → none
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