trompete

APT has a fancy constraint solver included, it tries to satisfy all packages being compatible with each other. Packages have metadata. Example snippet from apt show sudo:

Depends: libapparmor1 (>= 2.7.0~beta1+bzr1772), [...]
Conflicts: sudo-ldap
Replaces: sudo-ldap

It needs all the stuff that's in listed as a dependency, with the correct version, and it says you can't have sudo-ldap at the same time. If I were to try and install sudo-ldap, it would yeet sudo. It does show you this and asks if you want to continue though.

In this case, this is by design, the sudo packagers made it so you can choose between the LDAP-enabled version of sudo and the regular version (most people don't use LDAP).

But if you mix-and-match packages from various distros or versions of distros, it will have a hard time satisfying all the "Depends:" stuff, due to differences in versions and sometimes package names, and often it finds the "solution" is to uninstall a whole bunch of stuff.

I suspect you didn't switch just the mirror, but to a different repository with different packages. Possibly a different version of Ubuntu.

It used to be FTTB (DSL from there), only installed a couple of years ago, but recently they ran fiber into all the apartments. There's a new thin plastic cabinet, about 40x40 cm, in the bike cellar (server room lol) with a laser warning sign on it. All done in cooperation with the ISP it seems. In fact the landlord seemed utterly uninvolved.

Also why would it be called a modem in one situation, but not the other? Like what's the difference here.

Very interesting, thanks.

My ISP here in Germany gave me a separate ONT, to connect via ethernet to the router (they also gave me new router, with integrated DSL modem (lol), but I'm pretty sure the old one would have worked fine). I hooked up my own OpenWrt router instead. I'm happy they gave me a separate ONT, means I don't have to buy my own ONT or router that can do fiber to keep using the OpenWrt router. It in fact connects exactly the same as when it was hooked up to the DSL modem. Same PPPoE configuration, same VLAN even.

Which is why I was wondering if technically it's a modem, whether calling it a modem is incorrect. I'd say an integrated modem is still a modem, so I'm not fussed about the modem-vs-router distinction.

I don't think I have a way to see all this info you're talking about, but that would be interesting. Maybe I'll look into if you can connect to the ONT via HTTP or something and see that stuff.

There used to be a DSL router in the apartment building basement, but that stuff wasn't old, they only put in FTTB a couple of years ago. Recently they ran fiber into all the apartments and got rid of the DSL. Since you explain with the PON being easier/cheaper, I imagine that's what they did since they were able to build the whole thing throughout the city in last two decades, so they would have planned for that.

Anyway, I guess you didn't call the ONT a modem, but is it wrong to call it that? It modulates the laser on the fiber optic line, and it literally replaced a DSL modem which everyone agrees should be called a modem.

Apart from cable modems and wireless modems, DSL modems are also called modems, and they don't do AT. Pretty sure that modems, and the word modem, are much older than the AT commands. I do grant you "modem" at one point was almost synonymous with a dial-up modem that understood AT.

Seriously, I will never rename a thing just because it has a little cum on it.

I'll defend this. No amount of funny connotations would get me to rename an otherwise perfectly good function name. And not out of a childish desire for mischief like you lot, just out of general principle.