Chromium very slow since upgrade to 14.04 LTS

[Heineken]

Since upgrading to 14.04 LTS Chromium became very slow. Lots of black surfaces, etc are shown.
When run on the command line: "chromium-browser --disable-gpu" the effect disappears.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: chromium-browser 34.0.1847.116-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Sat May 3 14:26:00 2014
Desktop-Session:
 DESKTOP_SESSION = ubuntu
 XDG_CONFIG_DIRS = /etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg
 XDG_DATA_DIRS = /usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/
DetectedPlugins:

Env:
 MOZ_PLUGIN_PATH = None
 LD_LIBRARY_PATH = None
ExecutablePath: /usr/lib/chromium-browser/chromium-browser
InstallationDate: Installed on 2014-04-20 (12 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: chromium-browser
UpgradeStatus: No upgrade log present (probably fresh install)
chromium-default: CHROMIUM_FLAGS=""
gconf-keys: /desktop/gnome/applications/browser/exec = b''/desktop/gnome/url-handlers/https/command = b''/desktop/gnome/url-handlers/https/enabled = b''/desktop/gnome/url-handlers/http/command = b''/desktop/gnome/url-handlers/http/enabled = b''/desktop/gnome/session/required_components/windowmanager = b''/apps/metacity/general/compositing_manager = b''/desktop/gnome/interface/icon_theme = b''/desktop/gnome/interface/gtk_theme = b''
modified.conffile..etc.default.chromium.browser: [deleted]

[Launchpad Janitor (janitor)]

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

[Fauchelevent (fauchelevent)]

I've just installed Kubuntu 14.04 64 bits in a virtual machine (Windows 8.1). Launching chromium-browser aborts the session (no problem if using the --disable-gpu workaround).

[Paul White (paulw2u)]

We are sorry that we do not always have the capacity to review all reported bugs in a timely manner. This bug was reported some time ago and there have been many changes in Ubuntu and Chromium since that time.

Does anyone still see a problem related to the one that was reported using currently supported versions of Ubuntu and Chromium? Please let us know if you do otherwise this report can be left to expire in approximately 60 days time.

Thank you for helping make Ubuntu better.

Paul White
[Ubuntu Bug Squad]

[Launchpad Janitor (janitor)]

[Expired for chromium-browser (Ubuntu) because there has been no activity for 60 days.]