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There are several reports that say that there are serious performance issues using 12.04 and nVidia 7100.

Are there any work-a-round in sight?

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4 Answers 4

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Here's another bug report to add to the list:

https://bugs.launchpad.net/unity/+bug/987469

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This is how I solved the problem (found in a discussion in ubuntuforum.org). I installed the old nvidia-173 driver AND downgraded xserver-xorg. After this XBMC, Unity and other GPU-hungry things started to work again.

1) /etc/apt/preferences.d/10xorg

Package: xorg xserver-xorg*
Pin: release a=oneiric
Pin-Priority: 1050
# So i can find dependencies for the older driver

2) /etc/X11/xorg.conf

# New section
Section "Extensions"
Option "Composite" "Disable"
EndSection

3) install nvidia-173 using synaptic or apt-get

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    Well... step 2 alone "fixes" the issue, but basically makes Unity 3D act like 2D, which kind of defeats the purpose of the fix.
    – 01es
    May 2, 2012 at 20:26
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Downgrading to 295.33 helped with my GeForce 7100. Everything works well now.

Type Ctl-Alt-F1, then:

    sudo add-apt-repository ppa:ubuntu-x-swat/x-updates
    sudo apt-get update
    sudo apt-get install nvidia-current=295.33-0ubuntu1~precise~xup1

I found this solution in this article: Unity 3d no longer works after installing 12.04

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my problem was with geforce gt630m with optimus technologies, and intel HD3000

Problem description: battery duration on linux 1 hour // windows 6 hours

After installing bumblebee, battery duration on linux 4.3 hours

instruction here: http://www.leanuxeros.com/linux/como-instalar-bumblebee-3-0-en-ubuntu-y-debian/

maybe you should use google.translator.com

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