[Bug 1009201] [NEW] lagging while scrolling a page.

[Praveen Thivari]

Public bug reported:

Firefox doesn't scroll the page properly.

I may not be able to explain the problem exactly. But here is what
happens :

1) Open certain website. For Eg: ubuntuforums.org

2) Try scroll the page down.

3) On screen it looks like it is not scrolled but in fact it would have scrolled down. Ie It appears like GRAPHIC FREEZE. I say it as graphic freeze because I can use the window, for that matter refresh the page etc. 
     This is confirmed after sometime when the page come out that freeze and begins to show the new position of page.
      Also it can be confirmed by trying to copy a line or opening a link. The link will not be opened because the link would have scrolled to new position and after the window comes out of the 'GRAPHIC FREEZE' you can click on the link from it new posiiton.

Also to be noted is that this problem occurs randomly.

It creates a very jarring experience.

Looks like problem is with Ubuntu/Unity. Because on linux mint this
problem is not there

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 12.0+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic-pae 3.2.16
Uname: Linux 3.2.0-24-generic-pae i686
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  ram        1766 F.... pulseaudio
BuildID: 20120423122624
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'NVidia'/'HDA NVidia at 0xfe024000 irq 22'
   Mixer name	: 'Realtek ALC888'
   Components	: 'HDA:10ec0888,1565e601,00100001'
   Controls      : 47
   Simple ctrls  : 21
Channel: release
Date: Wed Jun  6 01:44:37 2012
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
IpRoute:
 default via 192.168.1.1 dev eth0  proto static
 169.254.0.0/16 dev eth0  scope link  metric 1000
 192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.2  metric 1
IwConfig:
 lo        no wireless extensions.

 eth0      no wireless extensions.
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 LANG=en_IN.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=12.0/20120423122624 (Running)
RfKill:

RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/16/2008
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: TF7025-M2
dmi.board.vendor: BIOSTAR Group
dmi.board.version: 1.0
dmi.chassis.type: 3
dmi.chassis.vendor: BIOSTAR Group
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd01/16/2008:svnBIOSTARGroup:pnTF7025-M2:pvr5.0:rvnBIOSTARGroup:rnTF7025-M2:rvr1.0:cvnBIOSTARGroup:ct3:cvr:
dmi.product.name: TF7025-M2
dmi.product.version: 5.0
dmi.sys.vendor: BIOSTAR Group

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


** Tags: apport-bug i386 precise release-channel

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Title:
  lagging while scrolling a page.

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