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[Bug 776747] [NEW] Window freezes if opened while the scrollbar handle is being shown


Public bug reported:

Binary package hint: compiz

While working with Filezilla today I found a curious bug which I guess
lies inside the compiz manager (since it didnt happen in 10.10 with the
same Filezilla version). If you open a new window while the scrollbar
"handle" (that thing with the two arrows used to move the scrollbar in
some apps) is being shown the new window freezes and you have to force
close the application.

Steps to reproduce (with Filezilla):
1. Open Filezilla. Go to Edit > Settings;
2. In the settings screen, choose SFTP;
3. Move the mouse cursor over the scrollbar in the bottom of the window (right above the "add keyfile..." button). The scrollbar handle will be shown;
4. While the handle is still on the screen, click on the "add keyfile" button;
5. New window freezes, everybody gets sad ;(

As I said, im reporting this as a Compiz bug since if you do the same
steps but wait for the scrollbar handle to disappear before clicking the
add keyfile button, everything works flawlessly so Im pretty sure this
is not filezilla related.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: compiz 1:0.9.4+bzr20110415-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-9.43-generic-pae
Uname: Linux 2.6.38-9-generic-pae i686
NonfreeKernelModules: nvidia wl
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
 NVRM version: NVIDIA UNIX x86 Kernel Module  270.41.06  Mon Apr 18 14:54:25 PDT 2011
 GCC version:  gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,snap,shift,resize,regex,compiztoolbox,move,grid,place,vpswitch,animation,gnomecompat,imgpng,session,expo,mousepoll,ezoom,staticswitcher,workarounds,wall,fade,scale]
 [   47.426915] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro,commit=0
 [   67.684518] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro,commit=0
 [   88.456123] Intel AES-NI instructions are not detected.
 [   88.469589] padlock_aes: VIA PadLock not detected.
 [11666.139863] CE: hpet increased min_delta_ns to 11520 nsec
Date: Tue May  3 18:42:47 2011
DistUpgraded: Log time: 2011-04-28 10:00:04.913457
DistroCodename: natty
DistroVariant: ubuntu
EcryptfsInUse: Yes
 nVidia Corporation C79 [GeForce 9400M G] [10de:0866] (rev b1) (prog-if 00 [VGA controller])
   Subsystem: Apple Computer Inc. Device [106b:00b1]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
InstallationMedia_: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
 xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
 kmod:wl - Broadcom STA wireless driver (Proprietary, Enabled, In use) [auto-install]
 xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, Not in use)
MachineType: Apple Inc. MacBook5,2
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-9-generic-pae root=UUID=b5c394d9-c428-45a4-81d5-10f6198e3fe3 ro quiet maxcpus=1 splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-9.43-generic-pae
SourcePackage: compiz
UpgradeStatus: Upgraded to natty on 2011-04-28 (5 days ago)
dmi.bios.date: 02/17/09
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MB52.88Z.0088.B02.0902171256
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-F22788AA
dmi.board.vendor: Apple Inc.
dmi.chassis.asset.tag: Asset Tag#
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F22788AA
dmi.modalias: dmi:bvnAppleInc.:bvrMB52.88Z.0088.B02.0902171256:bd02/17/09:svnAppleInc.:pnMacBook5,2:pvr1.0:rvnAppleInc.:rnMac-F22788AA:rvr:cvnAppleInc.:ct10:cvrMac-F22788AA:
dmi.product.name: MacBook5,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: apport-bug i386 natty regression-update ubuntu

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  Window freezes if opened while the scrollbar handle is being shown

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