lyn@antares:/var/lib/dpkg/info$ sudo apt-get remove --purge nvidia-331
[sudo] password for lyn:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
  linux-image-generic
Use 'apt-get autoremove' to remove it.
The following packages will be REMOVED:
  nvidia-331*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 182 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 226010 files and directories currently installed.)
Removing nvidia-331 (331.89-0ubuntu1~xedgers14.04.2) ...
Removing all DKMS Modules
Error! There are no instances of module: nvidia-331
331.89 located in the DKMS tree.
Done.
INFO:Disable nvidia-331
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/lenovo_thinkpad
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/dell_latitude
Traceback (most recent call last):
  File "/usr/bin/quirks-handler", line 65, in <module>
    operation_status = main(options)
  File "/usr/bin/quirks-handler", line 48, in main
    quirks = Quirks.quirkapplier.QuirkChecker(options.package_disable, path=quirks_path)
  File "/usr/lib/python3/dist-packages/Quirks/quirkapplier.py", line 38, in __init__
    self._system_info = self.get_system_info()
  File "/usr/lib/python3/dist-packages/Quirks/quirkapplier.py", line 64, in get_system_info
    return quirk_info.get_dmi_info()
  File "/usr/lib/python3/dist-packages/Quirks/quirkinfo.py", line 46, in get_dmi_info
    'class', 'dmi', 'id', item)).read().strip()
  File "/usr/lib/python3.4/codecs.py", line 313, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte
dpkg: error processing package nvidia-331 (--purge):
 subprocess installed pre-removal script returned error exit status 1
Processing triggers for libc-bin (2.19-0ubuntu6.3) ...
Errors were encountered while processing:
 nvidia-331
E: Sub-process /usr/bin/dpkg returned an error code (1)