[Bug 901718] [NEW] Firefox freezes on clicking on an image and dragging

[Bhaavan Merchant]

Public bug reported:

When It happens?
Whenever I visit a webpage, with image, and then I click on a image, and drag it around.

What should happen?
A slightly transparent ghost of that image should move along the pointer, till the mouse button is released.

What happens?
The slightly transparent ghost of the image is generated, and moves along the mouse for a few milliseconds, and then stops, and the system freezes and becomes unresponsive. Only my mouse moves in the screen. Whatever I click, or keyboard shortcuts (like alt+tab for application switch) I use produce no effect whatever. This lasts for about 10-15 seconds. After that the ghost image goes back to position and disappears. And system starts behaving normally. The links I had clicked during the unresponsive period are launched, and the keyboard shortcuts used respond. 


I feel this may most likely be a compiz bug. However I am uncertain. 

Do let me know how to post a more verbose bug message if necessary.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: firefox 8.0+build1-0ubuntu0.11.10.3
ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
Uname: Linux 3.0.0-13-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  bha1       1837 F.... pulseaudio
 /dev/snd/pcmC0D0p:   bha1       1837 F...m pulseaudio
BuildID: 20111115183813
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf3400000 irq 45'
   Mixer name	: 'Nvidia MCP77/78 HDMI'
   Components	: 'HDA:10ec0888,10250205,00100202 HDA:11c11040,11c10001,00100200 HDA:10de0003,10de0101,00100000'
   Controls      : 33
   Simple ctrls  : 18
Channel: release
Date: Thu Dec  8 20:43:39 2011
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
IpRoute:
 default via 10.3.8.1 dev eth0  proto static 
 10.3.8.0/24 dev eth0  proto kernel  scope link  src 10.3.8.25  metric 1 
 169.254.0.0/16 dev eth0  scope link  metric 1000 
 172.16.189.0/24 dev vmnet8  proto kernel  scope link  src 172.16.189.1 
 192.168.168.0/24 dev vmnet1  proto kernel  scope link  src 192.168.168.1
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 LANG=en_IN
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=8.0/20111115183813 (Running)
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/24/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.34
dmi.board.name: JV50_MV
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.34:bd09/24/2010:svnAcer:pnAspire5738:pvr0100:rvnAcer:rnJV50_MV:rvrRev:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 5738
dmi.product.version: 0100
dmi.sys.vendor: Acer
http_proxy: http://10.1.9.31:8080/
no_proxy: localhost,127.0.0.0/8

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


** Tags: amd64 apport-bug oneiric running-unity

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Title:
  Firefox freezes on clicking on an image and dragging

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