Thank you for your answer!
I bought my laptop in 2011, hence I think there is no hardware support for 5g and secure boot was introduced later in the years.
I noticed the following logs at startup, maybe I can edit the first post:
Code:
[ 19.804361] Bluethoot: hci0: unexpected event for opcode 0x0000
[ 20.042944] Bluethoot: hci0: hardware error 0x37