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I followed the steps letter by letter in this post... Gnome 3.2 problems in the shell

However I have come to a problem that I don't know how to solve... It is saying that package build has failed and it could not process the .deb file. I would like to install this as it increases performance of Unity. I have an ATi Mobility HD4250 Graphics Card. I also have been using the drivers that came out of the box with Unity, didn't install the ones from the Additional Drivers list..

my terminal

Now after all of that, it says it can't open the driver installer. enter image description here

Ok now with this new driver installed, everything appears to be choppy... It didn't do that with the drivers that came in Unity. I thought these were supposed to be an improvement?

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Now that I see it, its a different driver. Do I want to go with 11.12 or 12.1? –  Jordan Jan 29 '12 at 20:24
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2 Answers

up vote 2 down vote accepted

You are missing some packages to be able to build your drivers, please install them before trying to rebuild the drivers again. Open a terminal and type

sudo apt-get install build-essential cdbs fakeroot dh-make debhelper debconf libstdc++6 dkms libqtgui4 wget execstack libelfg0 dh-modaliases

After these are installed you can then execute sh ./amd-driver-installer-12-1-x86.x86_64.run --buildpkg Ubuntu/oneiric to build the packages and sudo dpkg -i fglrx*.deb to install them.

Please make sure that any old version of the drivers is already removed from the system

sudo sh /usr/share/ati/fglrx-uninstall.sh
sudo apt-get remove --purge fglrx fglrx_* fglrx-amdcccle* fglrx-dev*

will remove any previous installed versions at the moment in your system, dont worry if they give faults, just move on.

For a complete step by step guide on how to remove / revert / install the AMD driver visit this post

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How would I be able to check if I have any drivers still installed? I did the step from the previous question before anything. –  Jordan Jan 29 '12 at 20:11
    
I meant I did the very first step in the last question where to remove all the fglrx drivers installed. Is that good enough? –  Jordan Jan 29 '12 at 20:15
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Edited to include steps (also its also part of the post I linked) to remove the driver. Btw, what card do you have? –  Bruno Pereira Jan 29 '12 at 20:18
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That explains it, you can choose the 11-12 or the 12-1, does not matter they are both good, just make sure that the correct file is downloaded and the executable bit is set. Have a look at the Official ATI binaries from the ATI site section of the linked post. –  Bruno Pereira Jan 29 '12 at 20:29
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use sudo rm filename to remove files you cannot delete with your user. Do it one by one, all of the files newly created + the ones you downloaded. be extra careful once you rm one file that is gone for ever. Or as an option you can open a nautilus windows with sudo privileges using gksudo nautilus, navigate to the files and just press delete, they will go to the trash. –  Bruno Pereira Jan 30 '12 at 20:19
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I think you might find this thread useful

"I tried having the installer install directly as you suggested (sh ati-driver-installer-11-6-x86.x86_64.run) and it seems it's worked fine! Thanks!"

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