Who is Bastien?
Solution 1:
Wow lots of bug reports on "Bastien's Computer" being in peoples' bluetooth settings. It turns out you can talk to Bastien himself in this bug report: Visible as “Bastien Nocera's Computer”.
The common solution is to use:
rfkill list
and search for:
#: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
Then use:
rfkill unblock #
Where # is a number like 0, 1, 3 or 6.
If this doesn't solve it or, it only lasts for a single session, you can find other tips from Bastien in the link above.