** Package changed: gnome-shell (Ubuntu) => ubuntu-drivers-common
(Ubuntu)

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https://bugs.launchpad.net/bugs/1998853

Title:
  ubuntu-drivers autoinstall --- UnboundLocalError

Status in ubuntu-drivers-common package in Ubuntu:
  New

Bug description:
  * I have gone through `do-release-upgrade` and the system has upgraded 
successfully.
  * I have rolled back the graphic drivers to nouveau to have a clean drivers 
installation

  Once I tried to run `$ sudo ubuntu-drivers autoinstall` to install graphics 
drivers, this exception was raised:
  ```
  Traceback (most recent call last):
    File "/usr/bin/ubuntu-drivers", line 513, in <module>
      greet()
    File "/usr/lib/python3/dist-packages/click/core.py", line 1128, in __call__
      return self.main(*args, **kwargs)
    File "/usr/lib/python3/dist-packages/click/core.py", line 1053, in main
      rv = self.invoke(ctx)
    File "/usr/lib/python3/dist-packages/click/core.py", line 1659, in invoke
      return _process_result(sub_ctx.command.invoke(sub_ctx))
    File "/usr/lib/python3/dist-packages/click/core.py", line 1395, in invoke
      return ctx.invoke(self.callback, **ctx.params)
    File "/usr/lib/python3/dist-packages/click/core.py", line 754, in invoke
      return __callback(*args, **kwargs)
    File "/usr/lib/python3/dist-packages/click/decorators.py", line 84, in 
new_func
      return ctx.invoke(f, obj, *args, **kwargs)
    File "/usr/lib/python3/dist-packages/click/core.py", line 754, in invoke
      return __callback(*args, **kwargs)
    File "/usr/bin/ubuntu-drivers", line 432, in autoinstall
      command_install(config)
    File "/usr/bin/ubuntu-drivers", line 187, in command_install
      UbuntuDrivers.detect.nvidia_desktop_pre_installation_hook(to_install)
    File "/usr/lib/python3/dist-packages/UbuntuDrivers/detect.py", line 839, in 
nvidia_desktop_pre_installation_hook
      with_nvidia_kms = version >= 470
  UnboundLocalError: local variable 'version' referenced before assignment
  ```

  It looks like `version` is an unitialized variable, Cheers.

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