networking – No network connection after fresh debian install

Today I built a new PC, installed debian, during installation it was downloading additional packages from mirror, so connection to internet must have been fine, however after installation my debian is not connected to the network at all.

The command ip a shows only “lo” device. In /etc/network/interfaces I can see a device: enx3c18a002d1c5. If I try to do ifup enx3c18a002d1c5 then is says:

Cannot find device "enx3c18a002d1c5"
Failed to get interface index: No such device

installation – Mathematica on Manjaro Linux: Lots of $Failed buttons after a fresh install

I’ve been running Mathematica on Manjaro for a couple years and it has always worked out of the box. However, after a recent fresh install of Manjaro and Mathematica, all buttons show the message $Failed. I have successfully activated Mathematica, and the notebooks are working, but this issue is annoying.

I already checked the system fonts, package dependences, and can’t find the problem. I’m running GNOME (the problem persists in XORG and Wayland sessions).

Does anyone have faced the same issue?

$Failed buttons

Solved – Need Fresh Replies or Topics? | Forum Promotion

Need Fresh Replies or Topics? | Forum Promotion

Posting Custom Topic and/or Reply Amounts
Need some extra topics or replies? Expect an avatar and a minimum of 25 words (more, depending on forum subject) per topic or reply.
Cost: 10 FP per Reply; 25 FP per Topic. Custom package amounts available per request. Very specific niches or 75-500 or more replies or topics, expect a delay in completion.
Payment: Upfront for small orders. Larger orders can be split up into two payments, if desired amount of topics or replies need time to complete.
Time to Complete: For Packages that are 50 or smaller, expect time to complete to be between 1-5 days, based on genre of forum.
For tougher genres or package sizes that are much larger, expect completion to potentially take longer than expected.
Extra: If you want your packages to be spread out across a specific time period, feel free to specify in your request.
Bulk Pricing on 500 or more replies and/or topics, is available upon request.

Posting Packages
Need some extra topics or replies? The packages located at this thread, have the following conversion rates for the package prices.
USD and FP$ Conversion Pricing
Per Reply Cost: $0.10 USD = 10 FP
Per Topic Cost: $0.25 USD = 25 FP

So if the package costs $5.00 USD for the base rate, it is 500 FP.

The quick completion price conversion amount is: $1.00 USD = 100 FP.


20.04 – Updating Ubuntu Studio 20.4.2 LTS – Best Practices – Should I start with a fresh Image?

I’ve been having some trouble updating Ubuntu Studio since I installed it, so I’m wondering if I should start from scratch. Before doing so, I would like to know a few things:

-How does Livepatch work? (I am relatively uninformed on patching things, so I don’t know if it’s something I should delve into) By which I mean, could live patch solve the following (or something else short of reinstalling completely) >

Typically when I boot up my computer, a message shows that Ubuntu experienced an internal error, but I’ve never been able to pinpoint what this error is. Here is an image of the prompt.

enter image description here

This is a perennial problem for me. The updates in any system seem to be the bane of my computing existence. I’ve never run a checksum when installing a fresh system, so maybe if there is anything to explain to me, it’s how to successfully do that. But I can look that up if need be. Anyhow, the question remains, Should I be re-installing Ubuntu Studio 20.04.2 completely?

Is that correct that I don’t have “homebrew/cask” tap after fresh brew instalation?

I just fresh installed MacOS Big Sur.

And then I fresh installed brew.

During brew installation, there was one problem due to unstable network. But after I re-ran it two more times, it’s installed successfully. (it said so).

But, I found out it didn’t have homebrew/cask tap. Is that correct?

The reason why I think it might not be correct because I can not info any cask package.

% brew tap   

% brew info firefox
Error: No available formula or cask with the name "firefox".
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.

postgresql – Forcing a fresh start with Postgres after updating major version

On my Manjaro machine, I updated packages, and Postgres got updated to version 13.2-1.

Before the update, I had some databases on the previous version. Now Postgres won’t start because it recognises that the existing databases are from the old version. When I attempt to start Postgres, I get:

~|⇒ sudo systemctl status postgresql
● postgresql.service - PostgreSQL database server
     Loaded: loaded (/usr/lib/systemd/system/postgresql.service; disabled; vendor preset: disabled)
     Active: failed (Result: exit-code) since Fri 2021-03-12 21:30:02 GMT; 2min 53s ago
    Process: 3173 ExecStartPre=/usr/bin/postgresql-check-db-dir ${PGROOT}/data (code=exited, status=1/FAILURE)

Mar 12 21:30:01 xps systemd(1): Starting PostgreSQL database server...
Mar 12 21:30:02 xps postgres(3173): An old version of the database format was found.
Mar 12 21:30:02 xps postgres(3173): See
Mar 12 21:30:02 xps systemd(1): postgresql.service: Control process exited, code=exited, status=1/FAILURE
Mar 12 21:30:02 xps systemd(1): postgresql.service: Failed with result 'exit-code'.
Mar 12 21:30:02 xps systemd(1): Failed to start PostgreSQL database server.

Those databases weren’t important. They were for my personal pet projects and I’m happy to delete them.

How do I do that? Postgres won’t start, so I can’t delete them through psql. How can I force the latest version to start afresh? Ignore or delete the existing databases.

Mad Genius Returns from the Lab with Fresh High-Bandwidth Offers in Chicago and Virginia!

Mad Genius has been developing some new offers in the lab and now they’re ready to share them with our readers!

We saw Mad Genius most recently back on November 17, 2020.  They’ve returned with some new nodes, new SSDs, and new offers for you.  These are high-bandwidth offers, with 3TB of transfer per VPS.

They’ve been around since 1998 – that’s longer than some of our readers! – and have a wide range of services.  I love their web site because it’s fun and really emphasizes their branding.

Their WHOIS is public. They are registered in Minnesota, USA (3645726-2). Their Terms of Service is available on their web site (AUP, Privacy Policy). They accept Credit Card, paypal, Cryptocurrency, and ACH..

Here’s a little about Mad Genius in their own words:

“, is a locally owned and operated full service hosting provider in the Minneapolis area that has been in business since 1998. We are dedicated to providing web hosting, VPS, dedicated servers, networking and managed Internet services at the right price to residents and businesses. We are open to accept numerous forms of payments!

We recently added a bunch of new VPS nodes as SSD’s, hoping to get get customers on them at a steep discount!”

If you decide to give Mad Genius a try, please tell others how it goes in the comments below.

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Please let us know if you have any questions/comments and enjoy!


I’m Andrew, techno polymath and long-time LowEndTalk community Moderator. My technical interests include all things Unix, perl, python, shell scripting, and relational database systems. I enjoy writing technical articles here on LowEndBox to help people get more out of their VPSes.