alt-tab window switching does not alternate between windows

Bug #878323 reported by Krister Swenson
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Unity
Incomplete
Low
Unassigned
unity (Ubuntu)
Incomplete
Low
Unassigned

Bug Description

1. open two terminals an put them on two desktops.
2. open a third window on one of the desktops with the terminals.
3. pres ALT-TAB multiple time.
See that ALT-TAB does not switch between the two most recently used windows as expected.

A video is attached.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.22.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86 Kernel Module 280.13 Wed Jul 27 16:55:43 PDT 2011
 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu3
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,obs,grid,vpswitch,gnomecompat,place,imgpng,regex,neg,snap,resize,move,mousepoll,put,session,animation,unitymtgrabhandles,expo,workarounds,wall,fade,group,ezoom,scale,unityshell,scaleaddon]
CompositorRunning: compiz
Date: Wed Oct 19 12:29:17 2011
DistUpgraded: Log time: 2011-10-14 00:08:39.607237
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current, 280.13, 3.0.0-12-generic, i686: installed
 nvidia-current-updates, 280.13, 3.0.0-12-generic, i686: installed
GraphicsCard:
 nVidia Corporation G86 [GeForce 8400M GS] [10de:0427] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0209]
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
JockeyStatus:
 xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
 xorg:nvidia_173_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
 xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
 xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
MachineType: Dell Inc. XPS M1330
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=96761261-328d-4418-8fba-6c120eb0e3b9 ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: Upgraded to oneiric on 2011-10-14 (5 days ago)
dmi.bios.date: 12/26/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: XPS M1330
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

Revision history for this message
Krister Swenson (thekswenson) wrote :
Revision history for this message
Bilal Akhtar (bilalakhtar) wrote :

I can't reproduce this bug on my Oneiric install. Can you confirm that you're using the Unity alt+tab? As per the video, you don't seem to be using it.

Changed in unity:
status: New → Incomplete
Changed in unity (Ubuntu):
status: New → Incomplete
Revision history for this message
Krister Swenson (thekswenson) wrote :

It is confirmed in unity and this is indeed ALT-TAB...
  behavior is often unpredictable between ALT-TAB and ALT-TICK.

It is BROKEN and almost unusable.

Revision history for this message
Omer Akram (om26er) wrote :

Its really difficult from the video to understand the exact problem, could you be more decriptive about what should have happened and whats happening now.

Revision history for this message
Krister Swenson (thekswenson) wrote : Re: [Bug 878323] Re: alt-tab window switching does not alternate between windows
Download full text (4.4 KiB)

ALT-TAB is supposed to switch between applications, isn't it?
In the video, the first time I do ALT-TAB it switches from Unison to
Terminal as expected.
The second time I do ALT-TAB it switches between Terminals...
   what I expect to see is it switching back to Unison.
(if i wanted to switch between terminals i would do ALT-TICK)

On Tue, Dec 6, 2011 at 6:23 AM, Omer Akram <email address hidden> wrote:
> Its really difficult from the video to understand the exact problem,
> could you be more decriptive about what should have happened and whats
> happening now.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/878323
>
> Title:
>  alt-tab window switching does not alternate between windows
>
> Status in Unity:
>  Incomplete
> Status in “unity” package in Ubuntu:
>  Incomplete
>
> Bug description:
>  1. open two terminals an put them on two desktops.
>  2. open a third window on one of the desktops with the terminals.
>  3. pres ALT-TAB multiple time.
>  See that ALT-TAB does not switch between the two most recently used windows as expected.
>
>  A video is attached.
>
>  ProblemType: Bug
>  DistroRelease: Ubuntu 11.10
>  Package: unity 4.22.0-0ubuntu3
>  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
>  Uname: Linux 3.0.0-12-generic i686
>  NonfreeKernelModules: nvidia
>  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
>  .proc.driver.nvidia.registry: Binary: ""
>  .proc.driver.nvidia.version:
>   NVRM version: NVIDIA UNIX x86 Kernel Module  280.13  Wed Jul 27 16:55:43 PDT 2011
>   GCC version:  gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
>  .tmp.unity.support.test.0:
>
>  ApportVersion: 1.23-0ubuntu3
>  Architecture: i386
>  CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,obs,grid,vpswitch,gnomecompat,place,imgpng,regex,neg,snap,resize,move,mousepoll,put,session,animation,unitymtgrabhandles,expo,workarounds,wall,fade,group,ezoom,scale,unityshell,scaleaddon]
>  CompositorRunning: compiz
>  Date: Wed Oct 19 12:29:17 2011
>  DistUpgraded: Log time: 2011-10-14 00:08:39.607237
>  DistroCodename: oneiric
>  DistroVariant: ubuntu
>  DkmsStatus:
>   nvidia-current, 280.13, 3.0.0-12-generic, i686: installed
>   nvidia-current-updates, 280.13, 3.0.0-12-generic, i686: installed
>  GraphicsCard:
>   nVidia Corporation G86 [GeForce 8400M GS] [10de:0427] (rev a1) (prog-if 00 [VGA controller])
>     Subsystem: Dell Device [1028:0209]
>  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
>  JockeyStatus:
>   xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
>   xorg:nvidia_173_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
>   xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
>   xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
>  MachineType: Dell Inc. XPS M1330
>  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=96761261-328d-4418-8fba-6c120eb0e3b9 ro ...

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Omer Akram (om26er)
Changed in unity:
importance: Undecided → Low
Changed in unity (Ubuntu):
importance: Undecided → Low
Revision history for this message
Omer Akram (om26er) wrote :

thanks for the report. can you check if its bug 861250 you are facing or maybe bug 873082 ?

Revision history for this message
Krister Swenson (thekswenson) wrote :

it is probably related to the two bugs that you mention but i didn't look at the code.

Revision history for this message
Omer Akram (om26er) wrote :

i will mark it as duplicate of one

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