Xorg - high CPU load on playing Flash videos

[kapetr]

See attached screen shots.

When playing on-line Flash videos on many servers (e.g. dailymotion.com) in WINDOWED mode, Xorg-intel takes too much CPU - the video hangs often, the system is hard responsive.

In fullscreen mode - the problem disappears.

Vhen I reboot with VESA driver - there is low difference between windowed/fullscreen mode:
20-35% takes Flash plugin
Xorg takes only 8-10% of CPU.

=> it must be problem in INTEL driver.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.4
ProcVersionSignature: Ubuntu 3.2.0-56.86-generic 3.2.51
Uname: Linux 3.2.0-56-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Sun Nov 17 17:06:59 2013
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120401)
MachineType: MSI MS-7740
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-56-generic root=UUID=a9bc1c91-fcad-4cce-9262-da8b3df82854 ro
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/04/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.0
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H61MA-E35 (MS-7740)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.0:bd08/04/2011:svnMSI:pnMS-7740:pvr1.0:rvnMSI:rnH61MA-E35(MS-7740):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.name: MS-7740
dmi.product.version: 1.0
dmi.sys.vendor: MSI
version.compiz: compiz 1:0.9.7.12-0ubuntu3
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.43-0ubuntu0.0.3
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.6
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.6
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.14
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build3

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.