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Software Updater keeps suggesting to upgrade, after the upgrade

co flag
Florent Georges

On a new laptop shipped with Ubuntu 20.04, I changed the Software & Updates options to get notified about new versions of Ubuntu. Then when I ran Software Updater, it suggested to upgrade to 21.04. Which I did. All seemed fine.

But since then, every time I run Software Updater, it keeps asking me to upgrade:

software updater ask to upgrade

If I ask to upgrade again, the process starts:

welcome to hirsute

At first, all seems fine:

seems ok

But it feels, apparently during "Setting new software channels":

eventually fails

This last one shows for around one second, before disappearing, with no other message whatsoever. Any odea what could be wrong? How could I get more info about why the updater crashes?

[EDIT]

During the first upgrade, everything seemed fine, and I thought the upgrade was successful. But lsb_release still mentions 20.04. Altough apt update uses hirsute repositories. It looks like my system is in some kind of in-between state:

me@mine:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.2 LTS (fossa-stantler X80)
Release:    20.04
Codename:   focal

me@mine:~$ sudo apt update 
[sudo] password for fgeorges: 
Hit:1 http://archive.ubuntu.com/ubuntu hirsute InRelease
Get:2 http://archive.ubuntu.com/ubuntu hirsute-updates InRelease [109 kB]                          
Hit:3 http://archive.canonical.com/ubuntu hirsute InRelease                                        
Get:4 http://archive.ubuntu.com/ubuntu hirsute-backports InRelease [101 kB]                        
Hit:5 https://download.docker.com/linux/ubuntu focal InRelease                                     
Get:6 http://security.ubuntu.com/ubuntu hirsute-security InRelease [101 kB]                        
Fetched 310 kB in 1s (331 kB/s)   
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.

me@mine:~$ sudo apt upgrade 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

me@mine:~$ sudo apt full-upgrade 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
50
0 + 4
apt
ChanganAuto avatar
us flag
ChanganAuto
So you actually didn't release upgrade because the upgrader failed. Unsurprisingly it keeps suggesting it. The real question here is indeed *why* it failed, not what's in the title. Before trying again make sure your system is fully updated: `sudo apt update && sudo apt full-upgrade`. Check for errors. Very likely you can't do a direct upgrade because you'd need to go from 20.04 to 20.10 to 21.04 and 20.10 is EoL already.
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co flag
Florent Georges
Thank you, @ChanganAuto! I thought the (first) upgrade was successful, but indeed `lsb_release` keeps saying `focal`. But `apt update` and `apt full-upgrade` report nothing wrong (and `update` seems to use `hirsute` repos.) I edited my question and added more info at the end. I am lost now (more than 1 hour ago :-P)
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ChanganAuto avatar
us flag
ChanganAuto
I started previous comment with general advice. The problem is you can't skip releases and 20.10 is out of support, you missed the upgrade window by a few months.
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Florent Georges
Argh, I thought that if it was suggested by the updater, it was supported :-(((
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