When switching workspaces with workspace switcher previous Ws contents are momentarily displayed

[Doug McMahon]

See this on a beta 2 updated w/ nvidia current & on todays daily in a live session w/ nouveau

Easiest seen by -
Open a window on WS 1
Using the switcher (or expo binding), switch to another WS
Before that Ws is displayed the previous Ws flashes on-screen very quickly

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.18.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.19-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: 1.23-0ubuntu1
Architecture: i386
CompizPlugins: [core,composite,opengl,decor,png,text,vpswitch,resize,place,cube,gnomecompat,move,regex,rotate,scale,scaleaddon,animation,expo,unityshell]
CompositorRunning: compiz
Date: Tue Sep 27 22:33:57 2011
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current, 280.13, 3.0.0-11-generic, i686: installed
 nvidia-current, 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 11.10 "Oneiric Ocelot" - Beta i386 (20110921.2)
JockeyStatus:
 xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
 xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
 kmod:nvidia_current - nvidia_current (Proprietary, Disabled, Not in use)
 kmod:nvidia_173 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
MachineType: Dell Inc. XPS M1330
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=599e8434-1f7e-41f5-9fc4-022cc20fb08c ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
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 1:0.9.5.94+bzr20110919-0ubuntu1
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

[Doug McMahon (mc3man)]

This has been made even worse with the upgrade ro compiz 1:0.9.6-0ubuntu1
Now the previous Ws is flashed when just switching Ws's with Ctrl+Alt+ arrow

[Sebastien Bacher (seb128)]

I can't confirm with ctrl-alt-arrow but what I can see is the dialog I click on being hidden and then displayed again in the desktop expose

example with 2 workspaces:
- open gedit on ws1
- open firefox on ws2 and open another gedit on top of it
- click on the unity launcher workspace icon
- single click on gedit in ws1, you can see the background image (i.e gedit got hidden) for a second then gedit comes back
- single click on gedit on ws2, you can see firefox displayed for a second and then gedit coming back
- if you click on something already focussed it doesn't happen

it seems it unfocus or hide the dialog you select before selecting it...

[Doug McMahon (mc3man)]

Sorry for not expanding on last comment -
That was a beta 2 updated using cube/rotate where the issue was also seen when using viewport switching. Returning to to default wall showed showed no issue there (Ctrl+Alt+arrows

Have since done a fresh install with daily of 09/27 , using all defaults (wall
The problem with the workspace switcher remains, am using a simpler test

Open nautilus on WS 1, use the Ws switcher to go to Ws 2 (empty desktop
Before Ws 2 loads nautilus flashes on screen
Again using the Ws switcher go back to Ws 1, the desktop image flashes before Ws 1 with nautilus appears

[Launchpad Janitor (janitor)]

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

[chicken159 (services)]

Am seeing this today on 2 machines after latest updates [nvidia current driver on desktop, ati on dell laptop].

[Doug McMahon (mc3man)]

As of unity-4.20 no longer see the described behavior when using the Workspace Switcher (expo

It does continue if using rotate/cube instead of wall, but only with viewport switching so that is a different bug

Would be inclined to mark this as fix released or invalid - the only caveat is that currently unity-4.20 requires killing & restarting nautilus to use, so can't say this 100% represents normal usage. ( bug 862743

[Sebastien Bacher (seb128)]

no, it's not fixed in 4.20 using wall, it still happens there

[Doug McMahon (mc3man)]

While on a 10/02 install could not get the flashing with wall, I just removed it & put in a 10/04 install updated .
It's clear as day now.
 A quick ck. of cube/rotate shows they are still severely affected

[Greg A (etulfetulf)]

I'm seeing this problem with a Radeon HD 4350, with unity 4.22.0-0ubuntu2

[Doug McMahon (mc3man)]

On a 10/10 install with 'compiz (1:0.9.6+bzr20110929-0ubuntu4) oneiric-proposed' can no longer see this in Ws switcher when using the default wall plugin.

[Greg A (etulfetulf)]

'compiz (1:0.9.6+bzr20110929-0ubuntu4) oneiric-proposed' fixes this for me too.

[chicken159 (services)]

compiz 1:0.9.6+bzr20110929-0ubuntu5 still exhibits this bug with desktop-cube.

[David Rando (david-rando)]

I'm having the problem right now too. You rotate the cube and it displays the previous desktop in a flash.

[Greg A (etulfetulf)]

The bug in this question (relating to the workspace switcher) is fixed with the version of compiz in natty-proposed.

I suggest that people having a similar problem with the desktop cube report a seperate bug.

[Doug McMahon (mc3man)]

new bug report specific to rotate/cube
Bug 876198

[Durand D'souza (durand1)]

I still have this problem with the latest Ubuntu precise, fully updated. Some windows flash briefly whenever I switch desktops using Desktop Wall. I'm using the proprietary nvidia drivers.

[Serrano Pereira (serrano-pereira)]

Also seeing this on Ubuntu Precise. I'm in the same situation as Durand D'souza (fully updated, desktop wall, nvidia proprietary driver).

[sprop (fpoblete-kamanga)]

The solution for me was downgrade from compiz 0.9.5 to 0.9.4 and everything works okey. First, uninstall compiz (it keeps its configuration)

sudo apt-get remove compiz*
sudo apt-get autoremove

Delete every repository mention compiz in Software Sources
To be shure nothing remains

gksudo nautilus /etc/apt/sources.list.d

delete every line with the word "compiz" in it

sudo apt-get update

Add the Natty repositories to your apt sources:

deb http://ubuntu.mirror.cambrium.nl/ubuntu/ natty-updates main universe
deb http://ubuntu.mirror.cambrium.nl/ubuntu/ natty main universe

sudo apt-get update
 restart

Install the 0.9.4 version of compiz and ccsm, and their dependencies:

sudo apt-get install compiz=1:0.9.4+bzr20110606-0ubuntu1~natty2 \
compiz-core=1:0.9.4+bzr20110606-0ubuntu1~natty2 \
compiz-gnome=1:0.9.4+bzr20110606-0ubuntu1~natty2 \
compiz-plugins=1:0.9.4+bzr20110606-0ubuntu1~natty2 \
compiz-plugins-main=0.9.4+bzr20110527-0ubuntu1~natty1 \
compizconfig-backend-gconf=0.9.2.4-0ubuntu1 \
libcompizconfig0=0.9.4-0ubuntu2 \
libdecoration0=1:0.9.4+bzr20110606-0ubuntu1~natty2 \
compizconfig-settings-manager=0.9.4-0ubuntu2 \
python-compizconfig=0.9.4-0ubuntu1 \
compiz-plugins-extra=0.9.4-0ubuntu3

I got some dependencies errors so I sudo apt-get install line by line, and at a dependencies error, installed the mentioned dependence line and try again.

Restart and voilá

[dino99 (9d9)]

That version has reached EOL since a while, so it will not receive update. If that issue still exist, report again using ubuntu-bug.