Wifi Options in Ubuntu 18.04.02 Desktop Settings not available

I’m trying to figure out how to re-activate the Wi-Fi options in Ubuntu 18.04.02 Desktop Settings: As you can see from the screenshot I’ve taken, there is no on/off button for wifi. I followed the indications found here: No wifi option on Ubuntu (18.04 and 16.04) but without success … riccardo@riccardo-HP-Laptop-15-da0xxx:~$ lspci | grep Network…

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Process becomes zombie – Pthon3 Multiprocessing

First of all I shall explain the structure of my scripts: Script1 –(call)–> Script2 function and this function further calls 12-15 functions in different scripts through multiprocessing, and in those functions some have infinite loops and some have threading in it. The function that contains threading further calls some functions having infinite loops in them.…

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Where and when should the coinbase transaction(including the miner key) be added?

I’m making a simple demonstrator program, pretty much a simplified bitcoin clone based mostly on the original whitepaper. Please bear with me, because I haven’t found a way to describe the problem more concisely. My blockchain is based on this tutorial. However, it completely ignores the transaction part, so I’ve based the transactions on this…

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Error: Couldn’t drop privileges: User is missing UID (see mail_uid setting)

I have an email system that is setup loosely around the ISPMail guides here – https://workaround.org/ispmail/buster/ I am trying to setup a script for automatic password scheme migration, but I’m running into issues. I’ve been following guides similiar to this: https://wiki.dovecot.org/HowTo/ConvertPasswordSchemes Whenever I enable userdb prefetch, the Couldn’t drop privileges: User is missing UID (see…

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