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I have tried to install a special ATI driver using a method described in


Alternative ATI Legacy Video Driver PPA installation for (for < 5000 series cards):

sudo apt-get remove --purge fglrx fglrx_* fglrx-amdcccle* fglrx-dev*

sudo add-apt-repository ppa:makson96/fglrx

sudo apt-get update

sudo apt-get upgrade

sudo apt-get install linux-headers-generic fglrx-legacy

sudo aticonfig --initial

And then reboot.

There were a couple of warnings at "sudo apt-get install linux-headers-generic fglrx-legacy" with update-alternatives.

But, at the last step I got "aticonfig: No supported adapters detected".

Unity does not start anymore. I only can login to Gnome.

How can I get back to a working system?

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no one can point me to a solution? – hako Jul 10 '13 at 6:30

I found a solution here:

  1. Ran from a Gnome desktop terminal sudo apt-get purge fglrx lightdm && sudo apt-get install lightdm ubuntu-desktop
  2. Enabled Unity via ccsm, and rebootet.
  3. After login to Ubuntu desktop, running ccsm again to do the settings did the trick.

Now, acc to sytem settings, I have the driver "Gallium 0.4 on ATI RS480".

Unity is working again. Slow - but working.

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