Unity

alt-tab window switching does not alternate between windows

Bug #878323 reported by Krister Swenson on 2011-10-19

This bug report is a duplicate of: Bug #861250: alt-tab - quick alt + tab (before the switcher shows) not consistent. Edit Remove

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

Tags:

Revision history for this message

Krister Swenson (thekswenson) wrote on 2011-10-19:

ctrtab.ogv Edit (2.6 MiB, video/ogg)
.proc.driver.nvidia.params.txt Edit (455 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (60.7 KiB, text/plain; charset="utf-8")
BootLog.gz Edit (546 bytes, application/x-gzip)
CurrentDmesg.txt Edit (1.8 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (5.9 KiB, text/plain; charset="utf-8")
DpkgLog.txt Edit (1.7 MiB, text/plain; charset="utf-8")
GconfCompiz.txt Edit (48.5 KiB, text/plain; charset="utf-8")
GdmLog.txt Edit (33.6 KiB, text/plain; charset="utf-8")
GdmLog1.txt Edit (17.4 KiB, text/plain; charset="utf-8")
GdmLog2.txt Edit (17.1 KiB, text/plain; charset="utf-8")
LightdmLog.txt Edit (2.7 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (16.1 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (517 bytes, text/plain; charset="utf-8")
MonitorsUser.xml.txt Edit (481 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (138 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.7 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.5 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (123.9 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (260.5 KiB, text/plain; charset="utf-8")
UnitySupportTest.txt Edit (589 bytes, text/plain; charset="utf-8")
XorgConf.txt Edit (215 bytes, text/plain; charset="utf-8")
XorgLog.txt Edit (23.8 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (31.4 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (10.7 KiB, text/plain; charset="utf-8")
dmidecode.txt.txt Edit (11.0 KiB, text/plain; charset="utf-8")
locale.txt Edit (331 bytes, text/plain; charset="utf-8")
nvidia-settings.txt Edit (123.0 KiB, text/plain; charset="utf-8")
peripherals.txt Edit (1.1 KiB, text/plain; charset="utf-8")
setxkbmap.txt Edit (258 bytes, text/plain; charset="utf-8")
xdpyinfo.txt Edit (22.0 KiB, text/plain; charset="utf-8")
xinput.txt Edit (834 bytes, text/plain; charset="utf-8")
xkbcomp.txt Edit (54.9 KiB, text/plain; charset="utf-8")

Revision history for this message

Bilal Akhtar (bilalakhtar) wrote on 2011-12-05:

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 on 2011-12-06:

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 on 2011-12-06:

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 on 2011-12-06: 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 ...

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 <om26er@ubuntu.com> 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 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
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/unity/+bug/878323/+subscriptions

Omer Akram (om26er) on 2011-12-06

Changed in unity:
importance:	Undecided → Low
Changed in unity (Ubuntu):
importance:	Undecided → Low

Revision history for this message

Omer Akram (om26er) wrote on 2011-12-06:

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 on 2011-12-06:

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 on 2011-12-07:

i will mark it as duplicate of one

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