I just did a search for "linuxmint shared with other computers" and a lot of the hits were on forums.linuxmint.com and such.

I don't know where this Linuxmint 21.2 Cinnamon IPv4 page is. I tried to search for "Linuxmint 21.2 Cinnamon IPv4 page" but it didn't come up with anything that looked right.

Here's a Linux Mint tutorial that shows where you set to "Shared with other computers":

https://www.fosslinux.com/95687/conf...on-sharing.htm

Skip the first half, which explains how to make a WiFi hotspot (you are sharing a connection over WiFi).

The second half explains how to share a connection over a wired connection.

The screenshot appears after "Set the “Method” to “Shared” to other computers in the “IPv4” settings, as seen in the image below."

Nothing there looks like what I have. That post is about a year old. Could be mint MATE or mint something else, not Cinnamon. Might have been cinnamon then but definitely not now as currently updated.

I clicked on Network Manager in the system tray. Clicked on wired and clicked on the wheel at the bottom right and clicked on IPv4. At the top of the IPv4 there is a drop down by Addresses giving Automatic (DHCP), Manual, and Link-Local Only options. I selected Link-Local Only. See the .png I uploaded. I had to have both computers configured that way. Had to disable wireless. Was able to transfer files via Ethernet.

Looking at that link I think those are instructions for connecting computers over a LAN with wired connections. I am connecting 2 computers with an Ethernet cable connecting them - no router, switch, etc. Just a cable from one to the other with nothing in the middle.

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There are two different tutorials on the page. The second one is the one to do what I describe, starting with the line:

How to share Wi-FI internet connection on Linux Mint via wired (ethernet) connection

https://www.fosslinux.com/95687/conf...on-sharing.htm

One computer - the one with WiFi enabled - is the one which shares its connection with the other computer. The other computer is simply connected to the first with an ethernet cable.

It says you need to navigate to "Network Connections" in order to see the window with network connection settings. The "Network" window doesn't give you all the settings that the "Network Connections" window gives you.

Apparently that is no longer possible with Linuxmint 21.2 Cinnamon currently updated. Instead of using the Network Manager in the system tray I looked at Menu > System Settings > Hardware section > Network > Wired > IPv4. All that is identical to what I get if I proceed from the Network Manager icon in the System Tray. The wired connection between the 2 computers will not work if Wireless is enabled.

Are you running 21.2 Cinnamon fully updated and are able to follow their instructions, be able to make the Ethernet connection while also being connected wirelessly to your LAN?

I do not use either LinuxMint or Cinnamon. I use mostly Debian and XFCE4.

I did look around first to confirm that LinuxMint uses Network Manager just like practically everyone else (including Debian).

The specific way to open up Network Manager's GUI can vary, which is why I didn't offer highly detailed instructions at first.

The way I open it up is to right click on the system tray icon and select "Edit Connections".

Apparently your Network Manager is different from my Network Manager.

The screenshot you gave looks the same as what's on the tutorial page I linked. So, I think it's the same Network Manager as the Network Manager that everyone else also uses.

There are clearly two different windows available - one with "Network" in the title bar, and one with "Network Connections" in the title bar.

If I do a search for "linux mint network connection sharing" I see lots of references where people are using the "Shared to other computers" option in Linux Mint. They're using the same Network Manager as all the other Linux users.

According to this page, you get from the "Network" window to the "Network Connections" window by clicking on the gear icon next to the interface name:

https://www.fosslinux.com/105545/the...figuration.htm

Click on the gear icon next to the interface name to access the interface settings. You can configure the network parameters, such as the IP address, netmask, gateway, DNS servers, and more. Next, specify the connection type, such as DHCP or manual.

This page does not include any tutorial on how to share a network connection, but it shows how to navigate to the "Network Connections" window, and from there you can edit a connection.

My network Manager is apparently different than that shown. Mine does not have "Shared with other computers" option. It has Link-Local Only instead. It will not allow the wired connection if wireless is enabled. The manager is Network Manager (network@cinnamon.org) Most if not all Linux distros will have a Network Manager. They may be different. Are they all network@cinnamon.org?

From what you have described and shown in a screenshot, it looks like it's the same network manager as shown in various tutorials I've linked, and it's the same network manager as everyone else is using.

I think you may need to do a "reality check". Ask yourself why everyone else has no problem using network-manager to share a network connection with "Shared with other computers", and why others using LinuxMint Cinnamon aren't complaining about the latest versions breaking it.

And if they have made their own network manager ... why? Why go through all that extra effort and obvious potential for security holes when they could simply ... not? Upstream Ubuntu and Debian already provide and maintain the network-manager package. It works already, so why bother?

I don't know or care why. Linus Torvalds said he uses Linux Mint so that's good enough for me.

Not that which distro the kernel developer uses should even matter to your decision making process - it should be what YOU like, what meets YOUR needs, and odds are you have completely different workflow and use case than him - but in any case, never heard that before. In fact I pretty sure I've read he prefers apple hardware and is currently using asahi cuz its the best distro for the new arm macs.

It is quite well known that Linus uses Fedora. There was a video circulating from DebConf some years ago where people were trying to convince him to try Debian, but he said that he and his family were used to Fedora and that switching away from that would be too difficult at this point.

Mind you, his (public) opinion on this matter might be taken with a grain of salt: Prior to its initial public offering in 1999, Red Hat gave Torvalds what turned out to be about $1 million in stock. At IPO, they were worth 10x that amount. By the time IBM took over, that initial parcel would have been worth $125m.

Re: torvalds using asahi as of 18 months ago on apple silicon:
https://www.theregister.com/2022/07/31/linux_5_19/
https://lwn.net/Articles/903023/