Alt+Tab default delay of 150ms is too long

Bug #888636 reported by Chow Loong Jin on 2011-11-10
36
This bug affects 7 people
Affects Status Importance Assigned to Milestone
Ayatana Design
Critical
John Lea
Unity
Fix Released
Medium
Jason Smith
unity (Ubuntu)
Medium
Jason Smith

Bug Description

  affects unity
  affects hundredpapercuts
  affects ubuntu/unity

The Alt+Tab timeout is set to 150ms, which leads to a general impression of
slowness/lagginess, as the switcher does not appear immediately.

I'm assuming that this was done so that the user may switch between two
applications quickly without bringing the launcher up by tapping Alt+Tab and
releasing before the 150ms is up, so I'm attaching a patch that lowers this to
50ms, which appears to be a good compromise for me, from my testing.

Personally, I've found in my own daily use that when switching to the next
application, I prefer to know what I'm switching to before letting go of Alt,
which makes the current behaviour very annoying. So annoying that I've almost
exclusively switched to task-switching with the ring switcher and scale switcher.

Here's an external link regarding the issue:
http://askubuntu.com/questions/43875/how-do-i-adjust-the-alt-tab-speed

Some quick googling for "alt tab delay" also reveals that many Windows users are
complaining about the Alt+Tab delay/slowness in Windows.

--
Kind regards,
Loong Jin

Related branches

lp:~jassmith/unity/unity.alt-tab-timings
David Barth: Approve on 2012-02-22
Jason Smith (community): Needs Fixing on 2012-02-22
Chow Loong Jin (hyperair) wrote :

The attachment "0001-Lower-switcher-timeout-to-50ms.patch" of this bug report has been identified as being a patch. The ubuntu-reviewers team has been subscribed to the bug report so that they can review the patch. In the event that this is in fact not a patch you can resolve this situation by removing the tag 'patch' from the bug report and editing the attachment so that it is not flagged as a patch. Additionally, if you are member of the ubuntu-sponsors please also unsubscribe the team from this bug report.

[This is an automated message performed by a Launchpad user owned by Brian Murray. Please contact him regarding any issues with the action taken in this bug report.]

tags: added: patch
Chris Wilson (notgary) on 2011-11-12
Changed in hundredpapercuts:
status: New → Opinion
importance: Undecided → Low
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in unity (Ubuntu):
status: New → Confirmed
Didier Roche (didrocks) on 2011-11-22
Changed in unity:
status: New → Confirmed
Omer Akram (om26er) on 2011-12-02
affects: hundredpapercuts → ayatana-design
Changed in ayatana-design:
status: Opinion → New
Omer Akram (om26er) wrote :

this needs design input before being set as confirmed.

Changed in unity:
status: Confirmed → Incomplete
Changed in unity (Ubuntu):
status: Confirmed → Incomplete
Chow Loong Jin (hyperair) wrote :

I don't think that this is the same bug as bug #838232. If I'm reading that bug correctly, bug #838232 is about reducing the delay for which the Alt+Tab switcher turns into the Alt+Grave switcher. However, this bug is about reducing the delay for the Alt+Tab switcher appearing at all.

Chow Loong Jin (hyperair) wrote :

Here's a patch that makes the delay configurable instead of hardcoding it to 50ms.

John Lea (johnlea) on 2011-12-12
Changed in ayatana-design:
assignee: nobody → John Lea (johnlea)
status: New → Triaged
Changed in unity:
status: Incomplete → Confirmed
Changed in unity (Ubuntu):
status: Incomplete → Confirmed
tags: added: udp
Tim Penhey (thumper) on 2012-02-08
Changed in ayatana-design:
status: Triaged → In Progress
status: In Progress → Fix Committed
Changed in unity:
status: Confirmed → Triaged
importance: Undecided → Low
Tim Penhey (thumper) on 2012-02-08
Changed in unity:
milestone: none → backlog
Andrea Cimitan (cimi) on 2012-02-17
tags: added: top5p
John Lea (johnlea) on 2012-02-20
Changed in ayatana-design:
importance: Low → Critical
Omer Akram (om26er) on 2012-02-22
Changed in unity (Ubuntu):
importance: Undecided → Medium
Changed in unity:
importance: Low → Medium
status: Triaged → In Progress
Changed in unity (Ubuntu):
assignee: nobody → Jason Smith (jassmith)
status: Confirmed → In Progress
Changed in unity:
assignee: nobody → Jason Smith (jassmith)
milestone: backlog → 5.6.0
Changed in unity:
status: In Progress → Fix Committed
Changed in unity (Ubuntu):
status: In Progress → Fix Committed
Omer Akram (om26er) wrote :

its not merged yet why fix committed?

Didier Roche (didrocks) on 2012-03-12
Changed in unity:
status: Fix Committed → Fix Released
Launchpad Janitor (janitor) wrote :
Download full text (4.1 KiB)

This bug was fixed in the package unity - 5.6.0-0ubuntu1

---------------
unity (5.6.0-0ubuntu1) precise; urgency=low

  * New upstream release.
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      (LP: #862972)
    - compiz crashed with SIGABRT in __gnu_cxx::__verbose_terminate_handler()
      (LP: #926793)
    - compiz crashed with SIGSEGV in gdk_pixbuf_get_width() (LP: #937421)
    - Unity causes ibus to not work correctly (spaces incorrectly placed)
      (LP: #880876)
    - Dash - update Dash keyboard shortcuts so the 'CTRL + TAB' switches
      between Lenses and 'TAB' by itself moves the focus between categories
      (LP: #891648)
    - HUD - closing a window with <Alt>+<F4> opens the hud (LP: #923410)
    - unity-applications-daemon crashed with SIGSEGV in
      dee_sequence_model_free_row() (LP: #916356)
    - Launcher, Window Management - Launcher reveal should not be triggered
      when dragging a window (LP: #928805)
    - lenses are loaded on start, should be lazy loaded (LP: #929506)
    - Trash icon jumps about when trying to drag an icon onto it (LP: #932365)
    - HUD loses keypresses for the first second after opening (LP: #932906)
    - HUD doesn't give the focus back to the active application after dash/hud
      use (LP: #934061)
    - Launcher - unpinned apps show with empty pips in the launcher as if they
      exist on another workspace (LP: #937898)
    - Unity Dash should support Keywords parameter in .desktop (formerly X
      -GNOME-Keywords or X-AppInstall-Keywords) (LP: #941231)
    - Support FD.o Desktop Actions spec (LP: #942042)
    - Unity hangs when touching my touchpad/trackpad (LP: #942625)
    - [regression] Pressing alt doesn't show the menu title bar in top panel
      (LP: #943194)
    - Alt + F (or other mnemonic) doesn't work in gnome-terminal (LP: #943239)
    - [unity 5.6] Using Alt+F1 or Alt+F2 sends a ";3P" or ";3Q" to the active
      windows (LP: #943456)
    - [unity 5.6] holding alt and pressing a direction opens the alt-tab list
      in a buggy way (LP: #943902)
    - [unity-5.6] can't enter accents (^o->) in the dash since recent updates
      (LP: #944674)
    - Dash - Keyboard navigation for search filters is broken (LP: #844033)
    - Dash - If mouse highlights one icon in grid, keyboard navigation
      highlights another, so there are 2 highlighted icons (LP: #817436)
    - Alt+Tab default delay of 150ms is too long (LP: #888636)
    - Keyboard shortcut - F10 shortcut is used to show menu and this is wrong
      (LP: #878492)
    - Dash - Currently the app lens doesn't show applications that are
      available for purchase (LP: #916121)
    - Chromium is running, but not showing in launcher or alt-tab.
      (LP: #918474)
    - Dash - Different states of rating stars, and dimensions (LP: #924884)
    - alt-tab confused by a multiple instances of an application on different
      workspaces (LP: #925484)
    - Launcher - Icons are not colorized properly (LP: #930949)
    - Remove glow from Alt-tab edge and Search Field image assets
      (LP: #933578)
    - "Left Mouse Drag" and "Middle Mouse Drag" should be translatable
      (LP: #930510)
    - Launcher switcher...

Read more...

Changed in unity (Ubuntu):
status: Fix Committed → Fix Released
Nick Tait (jnick-tait) on 2012-03-13
Changed in ayatana-design:
status: Fix Committed → Fix Released
tags: added: reviewedbydesignp
removed: udp
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