Week 35- Grid highlight window appears covering the full screen

[Nice Testhouse]

Ubuntu 12.10 Quantal with ppa:unity-team/release with Intel GPU and Nvidia GPU.

Issue:
Grid highlight window (empty translucent window) appears covering the full screen. Please see screenshot.

Issue observed after terminating 2 open terminal windows. Will update the bug info once it is clear exactly what actions lead to this issue.

Action:
-Issue occurs when moving between workspaces.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.2.0+bzr2633ubuntu0+762 [origin: LP-PPA-unity-team-release]
ProcVersionSignature: Ubuntu 3.5.0-13.13-generic 3.5.3
Uname: Linux 3.5.0-13-generic i686
ApportVersion: 2.5.1-0ubuntu3
Architecture: i386
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CrashDB: unity
Date: Wed Aug 29 13:24:38 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Fujitsu Limited. Device [10cf:1507]
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120713.1)
MachineType: FUJITSU LIFEBOOK E780
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-13-generic root=UUID=1fa9e861-2bfd-468e-9152-a5f6477a2b08 ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/24/2011
dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
dmi.bios.version: Version 1.20
dmi.board.name: FJNB210
dmi.board.vendor: FUJITSU
dmi.board.version: CP477721-02
dmi.chassis.type: 10
dmi.chassis.vendor: FUJITSU
dmi.chassis.version: E78__
dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.20:bd01/24/2011:svnFUJITSU:pnLIFEBOOKE780:pvr:rvnFUJITSU:rnFJNB210:rvrCP477721-02:cvnFUJITSU:ct10:cvrE78__:
dmi.product.name: LIFEBOOK E780
dmi.sys.vendor: FUJITSU
version.compiz: compiz 1:0.9.8.0-0ubuntu1~test2
version.libdrm2: libdrm2 2.4.38-0ubuntu2
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120821.c1114c61-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120821.c1114c61-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.905-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.3-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1

[Omer Akram (om26er)]

i suspect it to be related to bug 1037142

[Nice Testhouse (testhouse)]

Week 35 - Updated the bug info above with action to reproduce the bug.
Same issue seen today while switching between workspaces.
@Omer - Yes, It is similar to bug 1037142. Only difference is in this case the grid highlight window occupies the full screen and not just the left half of the screen as in bug 1037142 and sometimes the grid highlight window does not disappear when moved again to a new workspace, instead it stays on screen for a longer time.

[Sami Jaktholm (sjakthol)]

I think this is actually the same bug as bug 1037142. The result is just a little different. Test the following:
1. Open a new window (not maximized)
2. Start workspace switcher
3. Click once on the opened, non-maximized window [Workspace switcher closes]
4. Move mouse to the top edge of your screen
5. An orange grid overlay appears covering whole screen [This bug occurs]

6. Start workspace switcher again
7. Click again once on the opened, non-maximized window [Workspace switcher closes]
8. Move mouse pointer to left edge of your screen [Bug 1037142 occurs]

So basically the problem is the same: grid thinks you're dragging a window and when you hit the edge, the orange overlay appears (like when you really drag a window) showing you what's going to happen to the window when you release your mouse. Grid just doesn't know that the window you're supposedly dragging is just a bogus state left behind by the workspace switcher.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1037142, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.