Upgrading from Kubuntu 20.04 LTS to 22.04 LTS

[vgharris]

I tried upgrading my Kubuntu 20.04 using: sudo do-release-upgrade and got the following failure


sudo do-release-upgrade
[sudo] password for vgharris:
Checking for a new Ubuntu release
Traceback (most recent call last):
File "/usr/bin/lsb_release", line 95, in <module>
main()
File "/usr/bin/lsb_release", line 59, in main
distinfo = lsb_release.get_distro_information()
File "/usr/lib/python3/dist-packages/lsb_release.py", line 398, in get_distro_informat
ion
distinfo = guess_debian_release()
File "/usr/lib/python3/dist-packages/lsb_release.py", line 288, in guess_debian_releas
e
get_distro_info(distinfo['ID'])
File "/usr/lib/python3/dist-packages/lsb_release.py", line 48, in get_distro_info
RELEASES_ORDER.sort(key=lambda n: float(n[0]))
File "/usr/lib/python3/dist-packages/lsb_release.py", line 48, in <lambda>
RELEASES_ORDER.sort(key=lambda n: float(n[0]))
ValueError: could not convert string to float: '6.06 LTS'
Traceback (most recent call last):
File "/usr/bin/lsb_release", line 95, in <module>
main()
File "/usr/bin/lsb_release", line 59, in main
distinfo = lsb_release.get_distro_information()
File "/usr/lib/python3/dist-packages/lsb_release.py", line 398, in get_distro_informat
ion
distinfo = guess_debian_release()
File "/usr/lib/python3/dist-packages/lsb_release.py", line 288, in guess_debian_releas
e
get_distro_info(distinfo['ID'])
File "/usr/lib/python3/dist-packages/lsb_release.py", line 48, in get_distro_info
RELEASES_ORDER.sort(key=lambda n: float(n[0]))
File "/usr/lib/python3/dist-packages/lsb_release.py", line 48, in <lambda>
RELEASES_ORDER.sort(key=lambda n: float(n[0]))
ValueError: could not convert string to float: '6.06 LTS'
Traceback (most recent call last):
File "/usr/bin/lsb_release", line 95, in <module>
main()
File "/usr/bin/lsb_release", line 59, in main
distinfo = lsb_release.get_distro_information()
File "/usr/lib/python3/dist-packages/lsb_release.py", line 398, in get_distro_informat
ion
distinfo = guess_debian_release()
File "/usr/lib/python3/dist-packages/lsb_release.py", line 288, in guess_debian_releas
e
get_distro_info(distinfo['ID'])
File "/usr/lib/python3/dist-packages/lsb_release.py", line 48, in get_distro_info
RELEASES_ORDER.sort(key=lambda n: float(n[0]))
File "/usr/lib/python3/dist-packages/lsb_release.py", line 48, in <lambda>
RELEASES_ORDER.sort(key=lambda n: float(n[0]))
ValueError: could not convert string to float: '6.06 LTS'
lsb_release returned exitcode: 1
Traceback (most recent call last):
File "/usr/bin/lsb_release", line 95, in <module>
main()
File "/usr/bin/lsb_release", line 59, in main
distinfo = lsb_release.get_distro_information()
File "/usr/lib/python3/dist-packages/lsb_release.py", line 398, in get_distro_informat
ion
distinfo = guess_debian_release()
File "/usr/lib/python3/dist-packages/lsb_release.py", line 288, in guess_debian_releas
e
get_distro_info(distinfo['ID'])
File "/usr/lib/python3/dist-packages/lsb_release.py", line 48, in get_distro_info
RELEASES_ORDER.sort(key=lambda n: float(n[0]))
File "/usr/lib/python3/dist-packages/lsb_release.py", line 48, in <lambda>
RELEASES_ORDER.sort(key=lambda n: float(n[0]))
ValueError: could not convert string to float: '6.06 LTS'
lsb_release returned exitcode: 1
There is no development version of an LTS available.
To upgrade to the latest non-LTS development release
set Prompt=normal in /etc/update-manager/release-upgrades.
vgharris@ST2000DM001-1ER164:~$

I don't really want a non-LTS version. Do you have any recommendations?

[claydoh]

Make sure you are fully up to date with apt, and have no errors or anything there, and try the official instructions, to see if there is any difference.
https://help.ubuntu.com/community/JammyUpgrades/Kubuntu

The instruction given is the same for 20.04-22.04 upgrades, and the commands provided are a little different that what you used.

Provide the outputs of cat /etc/lsb-release and cat /usr/lib/os-release, I wonder if there is an issue with your lsb_release info.

20.04 is still alive and supported by Ubuntu, (except for Kubuntu-related updates to Plasma). You won't be able to upgrade to a non-LTS release, nor to an End -of-Life release, so the only path is to 22.04.

[vgharris]

Thanks for your help! Here are the results you asked for. I don't see anything about Kubuntu.

vgharris@ST2000DM001-1ER164:~$ cat /etc/lsb-release and cat /usr/lib/os-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.5 LTS"
cat: and: No such file or directory
cat: cat: No such file or directory
PRETTY_NAME="Deepin 15"
NAME="Deepin"
VERSION_ID="15.11"
VERSION="15.11"
ID=deepin
HOME_URL="https://www.deepin.org/"
BUG_REPORT_URL="http://feedback.deepin.org/feedback/"

Respectfully,
vgharris

[claydoh]

That should be two separate commands:
cat /etc/lsb-release
and
cat /usr/lib/os-release
Though I think you are showing the content of both files, as requested

I don't see anything about Kubuntu.

You won't , since Kubuntu is Ubuntu. They are not separate distros.

PRETTY_NAME="Deepin 15"
NAME="Deepin"
VERSION_ID="15.11"
VERSION="15.11"
ID=deepin
HOME_URL="https://www.deepin.org/"
BUG_REPORT_URL="http://feedback.deepin.org/feedback/"

But I have no idea why you have Deepin stuff in there. that isn't even Ubuntu, but based on Debian.
I am sure that if this is a mixed system somehow, this would easily break things like this, due to mixed components, and likely missing items.

[Schwarzer Kater]

[…]
But I have no idea why you have Deepin stuff in there. […]
I am sure that if this is a mixed system somehow, this would easily break things like this, due to mixed components, and likely missing items.

vgharris: the output of sudo apt update in Konsole could also give us some clues (if you post it here, please use CODE tags).