Comment 101 for bug 1386721

philipp_023's fix didn't work for me either, running on i915. Chrome and
video playback are still very slow and flickering occurs while playing HD
video back.

On Wed, 25 Mar 2015 01:10 Leonardo <email address hidden> wrote:

> Same problem here, specifically with Chrome/Chromium. As others
> reported, there is visible flickering when scrolling or loading a page.
> Other programs work fine (e.g. Firefox). Tried philipp_023's solution;
> no luck.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1386721
>
> Title:
> Graphics Slow After Upgrade 14.04 - 14.10
>
> Status in Ubuntu GNOME:
> Confirmed
>
> Bug description:
> Using Gnome Ubuntu 14.10, Dell XPS 13, intel 915 Graphics
>
> After upgrading from 14.04 to 14.10 there are a lot of places where
> the graphics are working much slower than they were before:
>
> - Gnome Shell Interface is very sluggish, visible "chops" (redrawing)
> when pressing the [Super] key.
>
> - Selecting text in Gedit takes a full second pr. line
>
> Experiences some subjective improvement when I booted kernel 3.13.0-37
> instead of 3.16.0-23, but that may be my imagination as the problem
> persists.
>
> I've searched google, forums, found a couple of relevant links that
> point to the issue being the Intel drivers.
>
> http://askubuntu.com/questions/53962...E2%86%92-14-10
> http://www.webupd8.org/2014/10/ubunt...ent-1652086424
>
> But the drivers currently in 14.10 should be newer than those supplied
> by Intel to 14.04 so that doesn't make sense to me. As one Intel
> developer wrote:
>
> "I would like to point out that since what we do is bring more ecent
> versions of the software to the target distributions than they ship
> with, a 14.04 targeted installer is unlikely to bring much to a 14.10
> installation, which most likely has the same or more recent versions
> already anyway."
>
> Source: https://01.org/linuxgraphics/node/375
>
> ProblemType: Bug
> DistroRelease: Ubuntu 14.10
> Package: xorg 1:7.7+7ubuntu2
> ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
> Uname: Linux 3.16.0-23-generic x86_64
> ApportVersion: 2.14.7-0ubuntu8
> Architecture: amd64
> CompizPlugins: No value set for `/apps/compiz-1/general/
> screen0/options/active_plugins'
> CompositorRunning: None
> CurrentDesktop: GNOME
> Date: Tue Oct 28 15:24:30 2014
> DistUpgraded: 2014-10-25 20:59:36,052 DEBUG enabling apt cron job
> DistroCodename: utopic
> DistroVariant: ubuntu
> DkmsStatus: i915-3.15-3.13, 0.01, 3.13.0-37-generic, x86_64: installed
> ExtraDebuggingInterest: Yes, if not too technical
> GraphicsCard:
> Intel Corporation Haswell-ULT Integrated Graphics Controller
> [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
> Subsystem: Dell Device [1028:060a]
> InstallationDate: Installed on 2014-06-14 (135 days ago)
> InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64
> (20140416.2)
> MachineType: Dell Inc. XPS13 9333
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic
> root=UUID=105bbbd1-365e-4063-bdca-fc5431faf5dc ro quiet splash
> vt.handoff=7
> SourcePackage: xorg
> Symptom: display
> UpgradeStatus: Upgraded to utopic on 2014-10-25 (2 days ago)
> dmi.bios.date: 12/11/2013
> dmi.bios.vendor: Dell Inc.
> dmi.bios.version: A02
> dmi.board.name: 0GFTRT
> dmi.board.vendor: Dell Inc.
> dmi.board.version: A00
> dmi.chassis.type: 8
> dmi.chassis.vendor: Dell Inc.
> dmi.chassis.version: 0.1
> dmi.modalias: dmi:bvnDellInc.:bvrA02:bd12/11/2013:svnDellInc.:
> pnXPS139333:pvr:rvnDellInc.:rn0GFTRT:rvrA00:cvnDellInc.:ct8:cvr0.1:
> dmi.product.name: XPS13 9333
> dmi.sys.vendor: Dell Inc.
> version.compiz: compiz N/A
> version.ia32-libs: ia32-libs N/A
> version.libdrm2: libdrm2 2.4.56-1
> version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
> version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
> version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
> version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1
> version.xserver-xorg-input-evdev: xserver-xorg-input-evdev
> 1:2.9.0-1ubuntu2
> version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
> version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.99.914-1~exp1ubuntu4
> version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
> 1:1.0.11-1ubuntu2
> xserver.bootTime: Tue Oct 28 13:44:57 2014
> xserver.configfile: default
> xserver.errors:
>
> xserver.logfile: /var/log/Xorg.0.log
> xserver.outputs:
> product id 4933
> vendor CMN
> xserver.version: 2:1.16.0-1ubuntu1
>
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