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CID: 201307-13941 Dell Latitude E5440

Some small black block will appear when you scroll up in Firefox.

Steps:
1. Install 12.04.4 + updates (3.11.0-19)
2. Open https://docs.python.org/devguide/ in your Firefox with maximized window
3. Scroll to the bottom of the webpage, and scroll up

Expected result:
* Display works fine

Actuel result:
* Small black boxes appear in the browser when you scrolling up, this does not only happen in this page. 
But if you shrink the window size, it'll be hard to reproduce.
Verified with LibreOffice Calc, cannot be reproduced in it.

This might be an Intel driver related issue, see:
https://support.mozilla.org/en-US/questions/958127
https://bugs.freedesktop.org/show_bug.cgi?id=68410

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.11.0-19-generic 3.11.0-19.33~precise1
ProcVersionSignature: Ubuntu 3.11.0-19.33~precise1-generic 3.11.10.5
Uname: Linux 3.11.0-19-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.11.0-19-generic.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 1: PCH [HDA Intel PCH], device 0: ALC292 Analog [ALC292 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  ubuntu     1676 F.... pulseaudio
 /dev/snd/controlC1:  ubuntu     1676 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'MID'/'HDA Intel MID at 0xf7434000 irq 64'
   Mixer name	: 'Intel Haswell HDMI'
   Components	: 'HDA:80862807,80860101,00100000'
   Controls      : 21
   Simple ctrls  : 3
Card1.Amixer.info:
 Card hw:1 'PCH'/'HDA Intel PCH at 0xf7430000 irq 65'
   Mixer name	: 'Realtek ALC292'
   Components	: 'HDA:10ec0292,102805de,00100001'
   Controls      : 28
   Simple ctrls  : 13
Date: Wed Apr 23 02:32:24 2014
HibernationDevice: RESUME=UUID=1cfd99fb-54b6-4cc8-a24a-8db63ee87d24
InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release amd64 (20140204)
MachineType: Dell Inc. Latitude E5440
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-19-generic root=UUID=823ebc42-ec31-482a-ac2f-5d02316430ae ro quiet splash initcall_debug
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-19-generic N/A
 linux-backports-modules-3.11.0-19-generic  N/A
 linux-firmware                             1.79.11
SourcePackage: linux-lts-saucy
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/18/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A01
dmi.board.name: 01348G
dmi.board.vendor: Dell Inc.
dmi.board.version: X02
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA01:bd09/18/2013:svnDellInc.:pnLatitudeE5440:pvr01:rvnDellInc.:rn01348G:rvrX02:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5440
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Low
         Status: Incomplete


** Tags: 201307-13941 amd64 apport-bug precise qa-kernel-lts-testing running-unity taipei-lab
-- 
Intel Haswell Graphics controller[8086:0a16] Small blocks appear in Firefox randomly
https://bugs.launchpad.net/bugs/1311484
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