[20:32] <MariaDiaz91> I tried to upgrade from 20.10 to 21.04. Received some kind of an error while upgrading, I don't know what it is, What should I do? Here is the output: paste.ubuntu.com/p/9Svgc2hQxS
[20:32] <MariaDiaz91> And... there is /var/crash/postfix.0.crash : paste.ubuntu.com/p/QSzBt24k37
[20:33] <MariaDiaz91> oh... the links...
[20:33] <MariaDiaz91> https://paste.ubuntu.com/p/9Svgc2hQxS
[20:33] <MariaDiaz91> https://paste.ubuntu.com/p/QSzBt24k37
[20:50] <diogenes_> MariaDiaz91, so far upgrading is not even recommended.
[21:42] <MariaDiaz100> diogenes_, thanks for the answer, I've read it on irclogs after disconnecting :3
[21:43] <kryten> That's not true anymore for a few days now though.
[21:44] <MariaDiaz100> Anyway, the same bugs appear.
[21:45] <tomreyn>  newaliases: warning: valid_hostname: misplaced delimiter: xubuntu..
[21:45] <tomreyn>  newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: xubuntu..
[21:45] <tomreyn> MariaDiaz100: ^ from your first paste, lines 4320, 4321
[21:45] <tomreyn> the hostname should not end with a dot
[21:46] <MariaDiaz100> It never did. The hostname is just xubuntu, without a dot.
[21:47] <tomreyn> but apparently the "myhostname" parameter in the postfix configuration file does.
[21:47] <tomreyn> s/parameter/option/
[21:49] <MariaDiaz100> Did you mean to say there was a bug in the postfix configuration file or I didn't understand you?
[21:49] <tomreyn> yes, that's what i'm saying
[21:50] <tomreyn> in file /etc/postfix/main.cf you have a line saying "myhostname = xubuntu." or similar
[21:51] <tomreyn> if it's not in there it may also be in /etc/postfix/conf.d/myhostname or similar
[21:53] <MariaDiaz100> oh, now I'm trying to figure out: was that me who did this bug or the developers? Sorry, insomnias
[21:54] <tomreyn> i assume you entered this when you first configured postfix through those "blue screens"
[21:54] <tomreyn> but that's just a guess
[21:55] <MariaDiaz100> I surely didn't do anything but entered 'sudo do-release-upgrade' and just waited
[21:55] <tomreyn> oh this will have happened before the release upgrade, maybe long before that
[21:57] <tomreyn> you're aware this asus eeepc has only 1 GB of RAM installed?
[21:58] <MariaDiaz100> of course, I tried to study what's inside my netbook, but it didn't open properly, I could see only a part of the hardware. So I just gave up.
[21:59] <tomreyn> if i recall correctly, the ram is soldered onyto the mainboard, not replaceable, not upgradeable, anyways.
[22:00] <MariaDiaz100> hmm, then... that's strange because I have some kind of a... um... section on the bottom of the netbook. And that is the place where the RAM is. It's interesting.
[22:01] <MariaDiaz100> if it is not replaceable, why is there a section? haha
[22:02] <tomreyn> MariaDiaz100: hmm, you're right, i'm misremembering, sorry
[22:03] <tomreyn> 2 GB seems to be the maximim
[22:03] <MariaDiaz100> yeah, exactly
[22:04] <tomreyn> if you need to keep working with this laptop, i would very muchr ecommend that upgrade
[22:05] <tomreyn> might also want to replace the hdd by an ssd, though that's more difficult assembling-wise
[22:08] <MariaDiaz100> I'm still too afraid to replace anything myself. What if I could break something. It's the only computer I have. It's easier to buy a used PC for $10 and do whatever comes in my head than to do described above.
[22:08] <MariaDiaz100> Did you mean the bug could appear because of the small RAM which could bring errors to the upgrade process?
[22:08] <tomreyn> no. this is unrelated. the release upgrade failed due to the invalid postfix configuration i told you about.
[22:09] <MariaDiaz100> I still wonder how it remains invalid while I do no wrong things.
[22:10] <tomreyn> i could only speculate on this, which i did already.
[22:11] <MariaDiaz100> I tried several times. I install 20.04 mini.iso, write 'xubuntu' as a hostname, and it is successfully upgraded to 20.10. But it was never successfull to upgrade to 21.04, even when I, for a mistake, upgraded to the developers-version
[22:12] <tomreyn> you could just install 21.04 directly then
[22:13] <tomreyn> or uninstallpostfix before you start the release upgrade
[22:13] <tomreyn> (and reinstall it later if needed)
[22:13] <MariaDiaz100> yeah... I'll try that. I suppose Xubuntu Core is not worse than mini.iso
[22:14] <MariaDiaz100> thanks for the support, it's absolutely priceless
[22:15] <tomreyn> you're welcome, Maria, good luck.
[22:27] <tomreyn> MariaDiaz100: something i didn't mention, is that, after editing the postfix configuration file, you can just resume the upgrade by using    sudo apt update && sudo apt install -f && sudo apt upgrade && sudo apt full-upgrade