Reading package lists...
Building dependency tree...
Reading state information...
The following packages were automatically installed and are no longer required:
  nvidia-vdpau-driver libmysqlclient15off nvidia-kernel-2.6.32-5-486
  nvidia-kernel-common
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  libgl1-nvidia-alternatives
0 upgraded, 0 newly installed, 1 to remove and 35 not upgraded.
1 not fully installed or removed.
After this operation, 143 kB disk space will be freed.
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(Reading database ... 341918 files and directories currently installed.)
Removing libgl1-nvidia-alternatives ...
Removing 'diversion of /usr/lib/libGL.so.1.2 to /usr/lib/nvidia/diversions/libGL.so.1.2 by libgl1-nvidia-alternatives'
dpkg-divert: rename involves overwriting `/usr/lib/libGL.so.1.2' with
  different file `/usr/lib/nvidia/diversions/libGL.so.1.2', not allowed
dpkg: error processing libgl1-nvidia-alternatives (--remove):
 subprocess installed post-removal script returned error exit status 2
configured to not write apport reports
Errors were encountered while processing:
 libgl1-nvidia-alternatives
E: Sub-process /usr/bin/dpkg returned an error code (1)