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I'm using a Xubuntu / windows 8 dual boot setup. My initial problem was that when running Xubuntu, my laptop (a rather new Dell Inspiron 5520, AMD 7670/Intel HD4000 hybrid) got very hot over time. I read a couple of articles relating to this issue and decided to install the AMD catalyst driver in hopes of having better control over my hybrid GPU.

After installing the latest AMD catalyst 12.11 driver (beta 11), I cannot log in anymore

When I enter my password the screen shortly turns black and then I am back at the login window. Using the guest account I have no problems on login. Checking the system settings revealed that the driver was installed, but when starting the catalyst control center a message pops up telling me that something with the installation went wrong.

I've read a lot here on askubuntu about getting rid of the driver, e.g. by running

sudo sh /usr/share/ati/fglrx-uninstall.sh

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

I've tried proposed solutions but even without the amd driver being installed I am not able to log in. How can i completely get rid of the driver (I have the feeling there are maybe some driver remnants making trouble)?

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