The exposed open windows are not displayed in the geometric order

Bug #1349281 reported by Gioele Barabucci on 2014-07-28
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Unity
Fix Released
Medium
Eleni Maria Stea
7.2
Fix Released
Medium
Eleni Maria Stea
unity (Ubuntu)
Medium
Eleni Maria Stea
Trusty
Undecided
Unassigned

Bug Description

[ Impact ]

When multiple non-maximised windows of the same program are open and one clicks on the icon of the program in the launcher, they are all shown one next to each other but in an unexpected, difficult-to-predict order: windows that are in the top-left corner of the workspace can be shown in the exposé in the right bottom position or on the left bottom corner.

This makes very hard to switch between similarly looking windows like terminals.

[ Test Case ]

* launch four or so terminal windows;
* write something different on each of them to be able to tell them apart;
* move each window to a different corner, possibly using the auto-resizing feature of Unity;
* click on the terminal icon in the launcher;
* many terminal windows are displayed;
* choose the thumbnail in the right-top corner;
* very likely a window that was in another corner has been selected;
* try again various time and realize how confusing this all is.

[ Potential Regressions ]

An invalid ordering calculation might still position windows in the exposé in unexpected ways. This is not a serious regression and has not been observed under production situations.

[ Additional Info ]

The Ubuntu 14.04 LTS SRU was cherry-picked from upstream Unity as released in Ubuntu 14.10 where it demonstrated stability under daily use.

Related branches

lp:~hikiko/unity/unity.1349281
PS Jenkins bot: Approve (continuous-integration) on 2014-10-09
Marco Trevisan (Treviño): Approve on 2014-10-09
Stephen M. Webb: Pending requested 2014-10-07
lp:~unity-team/unity/7.2.4
Marco Trevisan (Treviño): Approve on 2014-12-17
Changed in unity:
assignee: nobody → Eleni Maria Stea (hikiko)
status: New → Confirmed
Changed in unity:
status: Confirmed → In Progress
Changed in unity:
importance: Undecided → Medium
Changed in unity (Ubuntu):
importance: Undecided → Medium
Changed in unity:
milestone: none → 7.3.1
Changed in unity (Ubuntu):
assignee: nobody → Eleni Maria Stea (hikiko)
status: New → Fix Released
Changed in unity:
status: In Progress → Fix Committed
tags: added: spread
Stephen M. Webb (bregma) wrote :

Attached debdiff between trusty-updates and SRU.

Stephen M. Webb (bregma) on 2014-12-30
summary: - The exposed open windows are displayed in the correct order
+ The exposed open windows are not displayed in the geometric order
description: updated

Hello Gioele, or anyone else affected,

Accepted unity into trusty-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/unity/7.2.4+14.04.20141217-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Changed in unity (Ubuntu Trusty):
status: New → Fix Committed
tags: added: verification-needed
Nekhelesh Ramananthan (nik90) wrote :

The placement of windows in the spread is much more logical now. Thnx for the fix.

tags: added: verification-done
removed: verification-needed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package unity - 7.2.4+14.04.20141217-0ubuntu1

---------------
unity (7.2.4+14.04.20141217-0ubuntu1) trusty; urgency=medium

  [ Andrea Azzarone ]
  * Share lockscreen password between screens (lp: #1308540)
  * Allow a distinct pam config file for greeter and for lock-screen.
    (lp: #1305440)
  * Add an arrow activator in the lockscreen. (lp: #1332509)
  * Make sure GetScreenGeometry returns the correct value (lp: #1374785).
  * unmapped all windows prior to shutdown (lp: #1370017) (lp: #1375271)

  [ Brandon Schaefer ]
  * fix tooltip for the "Show Desktop / Restore Windows" icon in the Alt-Tab
    switcher (lp: #1237132)
  * Use CONFIG instead of CACHE to store the first_run.stamp (lp: #1328677)

  [ Eleni Maria Stea ]
  * LayoutSystem: make sure the exposed open windows are displayed in the
    preserved order (lp: #1349281).

  [ handsome_feng ]
  * added support for getting the distro name from /etc/os-release
    (lp: #1329584)

  [ Iain Lane ]
  * When grabbing keys, try prefixing "XF86" if the key isn't found. GNOME
    gives us unprefixed keys sometimes (lp: #1302885).

  [ Marco Trevisan (Treviño) ]
  * make the Launcher icon count badge width depend on the text value width
    and scaling (lp: #1353070) (lp: #1354498) (lp: #796527) (lp: #1066971)
    (lp: #1361713)
  * DecoratedWindow: make edges independent from borders and properly update
    them on actions change (lp: #1276177), (lp: #1299741), (lp: #1301776),
    (lp: #1324104), (lp: #1364225), (lp: #1373695)
  * Lockscreen: scale the UI elements based on current monitor scaling
    (lp: #1292218)
  * UnityScreen: when filtering out windows in spread, make sure we unscale
    them (lp: #1316265).
  * PanelMenuView: ensure that proper window tiles and buttons are shown at
    the right place (lp: #1384910) (lp: #1384958) (lp: #1385285)
  * SearchBar, ActionButtons, IconRenderer: include the font scaling when
    scaling textual items (lp: #1332947) (lp: #1361751) (lp: #1362162)
    (lp: #1362346).
  * ApplicationLauncherIcon: make sure we close the dash if DnD is accepted
    and the application window is about to be focused (lp: #1350331).
  * SwitcherView: set progress on icon render args (lp: #1361679).
  * LockScreenController: wait for the primary shield to get the grab
    before setting the session locked (lp: #1368427) (lp: #1371764).
  * added decorations to windows in non-focused workspaces (lp: #1383468)

  [ Stephen M. Webb ]
  * updated the unity(1) manpage to match the actual command (lp: #1059275)
  * bumped package version to match upstream

  [ Marco Trevisan (Treviño) ]
  * Preparing for unity 7.2.4
 -- Ubuntu daily release <email address hidden> Wed, 17 Dec 2014 20:52:10 +0000

Changed in unity (Ubuntu Trusty):
status: Fix Committed → Fix Released

The verification of the Stable Release Update for unity has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

Stephen M. Webb (bregma) on 2015-02-11
Changed in unity:
status: Fix Committed → Fix Released
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