Lenovo T520 disablecard: line1: $\'523': command not found

[anush]

Console output:

anush@brain:~$ sudo bumblebee-configuration 

Setting up and Downloading Configuration... Please wait

(0%...15%...33%...50%...75%...100%)
/usr/local/bin/bumblebee-disablecard: line 1: $'\253': command not found
 System start/stop links for /etc/init.d/bumblebee already exist.
Adding user anush to group bumblebee

anush@brain:~$ sudo optirun64 glxgears
 * Stopping Bumblebee X server bumblebee                                   [fail] 
/usr/local/bin/bumblebee-disablecard: 1: �: not found

The generated bug report has been emailed.

[Lekensteyn]

Dupe of https://github.com/MrMEEE/bumblebee/issues/530#issuecomment-1725465