pyv@pyv:~$ sudo apt-get remove --purge fglrx*

Reading package lists...
Building dependency tree...
Reading state information...
The following packages will be REMOVED:
  fglrx* fglrx-amdcccle*
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
After this operation, 220 MB disk space will be freed.
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(Reading database ... 229553 files and directories currently installed.)
Removing fglrx-amdcccle ...
Removing fglrx ...
Removing all DKMS Modules
Done.
update-alternatives: using /usr/lib/pxpress/ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode.
update-alternatives: warning: skip creation of /usr/bin/amdcccle because associated file /usr/lib/fglrx/bin/amdcccle (of link group x86_64-linux-gnu_gl_conf) doesn't exist.
update-alternatives: warning: skip creation of /usr/share/applications/ubuntu-amdcccle.desktop because associated file /usr/share/fglrx/amdcccle.desktop (of link group x86_64-linux-gnu_gl_conf) doesn't exist.
update-alternatives: warning: skip creation of /usr/share/applications/ubuntu-amdccclesu.desktop because associated file /usr/share/fglrx/amdccclesu.desktop (of link group x86_64-linux-gnu_gl_conf) doesn't exist.
update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl32.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl32.icd (of link group x86_64-linux-gnu_gl_conf) doesn't exist.
update-alternatives: warning: skip creation of /usr/bin/amdupdaterandrconfig because associated file /usr/lib/fglrx/bin/amdupdaterandrconfig (of link group x86_64-linux-gnu_gl_conf) doesn't exist.
update-alternatives: warning: skip creation of /usr/bin/amdxdg-su because associated file /usr/lib/fglrx/bin/amdxdg-su (of link group x86_64-linux-gnu_gl_conf) doesn't exist.
update-alternatives: warning: not replacing /usr/lib/x86_64-linux-gnu/xorg/extra-modules with a link.
update-alternatives: using /usr/lib/pxpress/alt_ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode.
update-alternatives: using /usr/lib/x86_64-linux-gnu/mesa/ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode.
update-alternatives: warning: not replacing /usr/lib/x86_64-linux-gnu/xorg/extra-modules with a link.
update-alternatives: using /usr/lib/i386-linux-gnu/mesa/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode.
update-initramfs: deferring update (trigger activated)
Purging configuration files for fglrx ...
update-initramfs: deferring update (trigger activated)
dpkg: warning: while removing fglrx, directory '/usr/lib/x86_64-linux-gnu/xorg/extra-modules' not empty so not removed.
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-3.2.0-32-generic
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place