Question

Can't upgrade from 18.04 LTS to 20.04 LTS

Posted October 21, 2020 412 views
Ubuntu 18.04Ubuntu 20.04

I’ve been trying for weeks to no avail to upgrade my VPS from Ubuntu 18 LTS to 20 LTS. It keeps erroring out, and I haven’t been able to figure out why.

root@www:/etc/apt# do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [1,554 B]                                                                                                                                                                     
Get:2 Upgrade tool [1,336 kB]                                                                                                                                                                              
Fetched 1,338 kB in 0s (0 B/s)                                                                                                                                                                             
authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg' 
extracting 'focal.tar.gz'

Reading cache

Checking package manager
Reading package lists... Done
Building dependency tree        
Reading state information... Done
Hit http://mirrors.digitalocean.com/ubuntu bionic InRelease                                                                                                                                                
Hit http://mirrors.digitalocean.com/ubuntu bionic-updates InRelease                                                                                                                                        
Hit http://mirrors.digitalocean.com/ubuntu bionic-backports InRelease                                                                                                                                      
Hit http://archive.ubuntu.com/ubuntu bionic InRelease                                                                                                                                                      
Hit http://security.ubuntu.com/ubuntu bionic-security InRelease                                                                                                                                            
Fetched 0 B in 0s (0 B/s)                                                                                                                                                                                  
Reading package lists... Done    
Building dependency tree          
Reading state information... Done
No candidate ver:  libapache2-mod-php5
No candidate ver:  libapt-inst1.5
No candidate ver:  libapt-pkg4.12
No candidate ver:  libbind9-90
No candidate ver:  libboost-iostreams1.54.0
No candidate ver:  libboost-system1.54.0
No candidate ver:  libboost-thread1.54.0
No candidate ver:  libcwidget3
No candidate ver:  libdns100
No candidate ver:  libept1.4.12
No candidate ver:  libgcrypt11
No candidate ver:  libgnutls26
No candidate ver:  libicu52
No candidate ver:  libisc95
No candidate ver:  libisccc90
No candidate ver:  libisccfg90
No candidate ver:  libisl10
No candidate ver:  liblinear1
No candidate ver:  liblwres90
No candidate ver:  libmysqlclient18
No candidate ver:  libparted0debian1
No candidate ver:  libperl5.22
No candidate ver:  libplymouth2
No candidate ver:  libprocps3
No candidate ver:  libpython3.4-minimal
No candidate ver:  librtmp0
No candidate ver:  libsigc++-2.0-0c2a
No candidate ver:  libsystemd-daemon0
No candidate ver:  libsystemd-login0
No candidate ver:  libvpx1
No candidate ver:  libxapian22
No candidate ver:  libxtables10
No candidate ver:  linux-image-4.4.0-101-generic
No candidate ver:  linux-image-4.4.0-103-generic
No candidate ver:  linux-image-4.4.0-104-generic
No candidate ver:  linux-image-4.4.0-109-generic
No candidate ver:  linux-image-4.4.0-112-generic
No candidate ver:  linux-image-4.4.0-116-generic
No candidate ver:  linux-image-4.4.0-119-generic
No candidate ver:  linux-image-4.4.0-121-generic
No candidate ver:  linux-image-4.4.0-122-generic
No candidate ver:  linux-image-4.4.0-124-generic
No candidate ver:  linux-image-4.4.0-127-generic
No candidate ver:  linux-image-4.4.0-128-generic
No candidate ver:  linux-image-4.4.0-130-generic
No candidate ver:  linux-image-4.4.0-131-generic
No candidate ver:  linux-image-4.4.0-133-generic
No candidate ver:  linux-image-4.4.0-134-generic
No candidate ver:  linux-image-4.4.0-137-generic
No candidate ver:  linux-image-4.4.0-28-generic
No candidate ver:  linux-image-4.4.0-31-generic
No candidate ver:  linux-image-4.4.0-43-generic
No candidate ver:  linux-image-4.4.0-45-generic
No candidate ver:  linux-image-4.4.0-57-generic
No candidate ver:  linux-image-4.4.0-59-generic
No candidate ver:  linux-image-4.4.0-62-generic
No candidate ver:  linux-image-4.4.0-63-generic
No candidate ver:  linux-image-4.4.0-64-generic
No candidate ver:  linux-image-4.4.0-66-generic
No candidate ver:  linux-image-4.4.0-67-generic
No candidate ver:  linux-image-4.4.0-70-generic
No candidate ver:  linux-image-4.4.0-71-generic
No candidate ver:  linux-image-4.4.0-72-generic
No candidate ver:  linux-image-4.4.0-75-generic
No candidate ver:  linux-image-4.4.0-77-generic
No candidate ver:  linux-image-4.4.0-78-generic
No candidate ver:  linux-image-4.4.0-79-generic
No candidate ver:  linux-image-4.4.0-81-generic
No candidate ver:  linux-image-4.4.0-83-generic
No candidate ver:  linux-image-4.4.0-87-generic
No candidate ver:  linux-image-4.4.0-89-generic
No candidate ver:  linux-image-4.4.0-91-generic
No candidate ver:  linux-image-4.4.0-92-generic
No candidate ver:  linux-image-4.4.0-93-generic
No candidate ver:  linux-image-4.4.0-96-generic
No candidate ver:  linux-image-4.4.0-97-generic
No candidate ver:  linux-image-4.4.0-98-generic
No candidate ver:  linux-image-extra-4.4.0-101-generic
No candidate ver:  linux-image-extra-4.4.0-103-generic
No candidate ver:  linux-image-extra-4.4.0-104-generic
No candidate ver:  linux-image-extra-4.4.0-109-generic
No candidate ver:  linux-image-extra-4.4.0-112-generic
No candidate ver:  linux-image-extra-4.4.0-116-generic
No candidate ver:  linux-image-extra-4.4.0-119-generic
No candidate ver:  linux-image-extra-4.4.0-121-generic
No candidate ver:  linux-image-extra-4.4.0-122-generic
No candidate ver:  linux-image-extra-4.4.0-124-generic
No candidate ver:  linux-image-extra-4.4.0-127-generic
No candidate ver:  linux-image-extra-4.4.0-128-generic
No candidate ver:  linux-image-extra-4.4.0-130-generic
No candidate ver:  linux-image-extra-4.4.0-131-generic
No candidate ver:  linux-image-extra-4.4.0-133-generic
No candidate ver:  linux-image-extra-4.4.0-134-generic
No candidate ver:  linux-image-extra-4.4.0-137-generic
No candidate ver:  linux-image-extra-4.4.0-28-generic
No candidate ver:  linux-image-extra-4.4.0-31-generic
No candidate ver:  linux-image-extra-4.4.0-43-generic
No candidate ver:  linux-image-extra-4.4.0-45-generic
No candidate ver:  linux-image-extra-4.4.0-57-generic
No candidate ver:  linux-image-extra-4.4.0-59-generic
No candidate ver:  linux-image-extra-4.4.0-62-generic
No candidate ver:  linux-image-extra-4.4.0-63-generic
No candidate ver:  linux-image-extra-4.4.0-64-generic
No candidate ver:  linux-image-extra-4.4.0-66-generic
No candidate ver:  linux-image-extra-4.4.0-67-generic
No candidate ver:  linux-image-extra-4.4.0-70-generic
No candidate ver:  linux-image-extra-4.4.0-71-generic
No candidate ver:  linux-image-extra-4.4.0-72-generic
No candidate ver:  linux-image-extra-4.4.0-75-generic
No candidate ver:  linux-image-extra-4.4.0-77-generic
No candidate ver:  linux-image-extra-4.4.0-78-generic
No candidate ver:  linux-image-extra-4.4.0-79-generic
No candidate ver:  linux-image-extra-4.4.0-81-generic
No candidate ver:  linux-image-extra-4.4.0-83-generic
No candidate ver:  linux-image-extra-4.4.0-87-generic
No candidate ver:  linux-image-extra-4.4.0-89-generic
No candidate ver:  linux-image-extra-4.4.0-91-generic
No candidate ver:  linux-image-extra-4.4.0-92-generic
No candidate ver:  linux-image-extra-4.4.0-93-generic
No candidate ver:  linux-image-extra-4.4.0-96-generic
No candidate ver:  linux-image-extra-4.4.0-97-generic
No candidate ver:  linux-image-extra-4.4.0-98-generic
No candidate ver:  mysql-server-5.5
No candidate ver:  perl-modules
No candidate ver:  php5-cli
No candidate ver:  php5-common
No candidate ver:  php5-gd
No candidate ver:  php5-json
No candidate ver:  php5-mcrypt
No candidate ver:  php5-mysql
No candidate ver:  php5-readline
No candidate ver:  php7.0-curl
No candidate ver:  python3.4
No candidate ver:  python3.4-minimal
No candidate ver:  systemd-services
No candidate ver:  systemd-shim

Updating repository information

Third party sources disabled 

Some third party entries in your sources.list were disabled. You can 
re-enable them after the upgrade with the 'software-properties' tool 
or your package manager. 

To continue please press [ENTER]

Get:1 http://security.ubuntu.com/ubuntu focal-security InRelease [107 kB]                                                                                                                                  
Get:2 http://archive.ubuntu.com/ubuntu focal InRelease [265 kB]                                                                                                                                            
Get:3 http://security.ubuntu.com/ubuntu focal-security/main Sources [93.9 kB]                                                                                                                              
Get:4 http://security.ubuntu.com/ubuntu focal-security/universe Sources [38.6 kB]                                                                                                                          
Get:5 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages [8,628 kB]                                                                                                                            
Get:6 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [342 kB]                                                                                                                        
Get:7 http://security.ubuntu.com/ubuntu focal-security/main i386 Packages [140 kB]                                                                                                                         
Get:8 http://security.ubuntu.com/ubuntu focal-security/main Translation-en [78.5 kB]                                                                                                                       
Get:9 http://security.ubuntu.com/ubuntu focal-security/main amd64 c-n-f Metadata [4,992 B]                                                                                                                 
Get:10 http://archive.ubuntu.com/ubuntu focal/universe i386 Packages [4,642 kB]                                                                                                                            
Get:11 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 Packages [65.8 kB]                                                                                                                
Get:12 http://security.ubuntu.com/ubuntu focal-security/restricted i386 Packages [8,920 B]                                                                                                                 
Get:13 http://archive.ubuntu.com/ubuntu focal/universe Translation-en [5,124 kB]                                                                                                                           
Get:14 http://security.ubuntu.com/ubuntu focal-security/restricted Translation-en [10.8 kB]                                                                                                                
Get:15 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 c-n-f Metadata [324 B]                                                                                                            
Get:16 http://archive.ubuntu.com/ubuntu focal/universe amd64 c-n-f Metadata [265 kB]                                                                                                                       
Get:17 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 Packages [1,256 B]                                                                                                                
Get:18 http://security.ubuntu.com/ubuntu focal-security/multiverse Translation-en [540 B]                                                                                                                  
Get:19 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 c-n-f Metadata [116 B]                                                                                                            
Get:20 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [509 kB]                                                                                                                   
Get:21 http://security.ubuntu.com/ubuntu focal-security/universe i386 Packages [408 kB]                                                                                                                    
Get:22 http://security.ubuntu.com/ubuntu focal-security/universe Translation-en [64.2 kB]                                                                                                                  
Get:23 http://security.ubuntu.com/ubuntu focal-security/universe amd64 c-n-f Metadata [8,620 B]                                                                                                            
Fetched 20.8 MB in 0s (0 B/s)                                                                                                                                                                              

Checking package manager
Reading package lists... Done    
Building dependency tree          
Reading state information... Done

Invalid package information 

After updating your package information, the essential package 
'ubuntu-minimal' could not be located. This may be because you have 
no official mirrors listed in your software sources, or because of 
excessive load on the mirror you are using. See /etc/apt/sources.list 
for the current list of configured software sources. 
In the case of an overloaded mirror, you may want to try the upgrade 
again later. 


Restoring original system state

Aborting
      g package lists... 0%
*** Collecting problem information

The collected information can be sent to the developers to improve the
application. This might take a few minutes.
Reading package lists... Done    
Building dependency tree          
Reading state information... Done
..
=== Command terminated with exit status 1 (Wed Oct 21 10:19:16 2020) ===

I’m using the standard DigitalOcean sources list (below)

## Note, this file is written by cloud-init on first boot of an instance
## modifications made here will not survive a re-bundle.
## if you wish to make changes you can:
## a.) add 'apt_preserve_sources_list: true' to /etc/cloud/cloud.cfg
##     or do the same in user-data
## b.) add sources in /etc/apt/sources.list.d
## c.) make changes to template file /etc/cloud/templates/sources.list.tmpl
#

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://mirrors.digitalocean.com/ubuntu bionic main restricted
deb-src http://mirrors.digitalocean.com/ubuntu bionic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://mirrors.digitalocean.com/ubuntu bionic-updates main restricted
deb-src http://mirrors.digitalocean.com/ubuntu bionic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://mirrors.digitalocean.com/ubuntu bionic universe
deb-src http://mirrors.digitalocean.com/ubuntu bionic universe
deb http://mirrors.digitalocean.com/ubuntu bionic-updates universe
deb-src http://mirrors.digitalocean.com/ubuntu bionic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://mirrors.digitalocean.com/ubuntu bionic multiverse
deb-src http://mirrors.digitalocean.com/ubuntu bionic multiverse
deb http://mirrors.digitalocean.com/ubuntu bionic-updates multiverse
deb-src http://mirrors.digitalocean.com/ubuntu bionic-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://mirrors.digitalocean.com/ubuntu bionic-backports main restricted universe multiverse
deb-src http://mirrors.digitalocean.com/ubuntu bionic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu trusty partner
# deb-src http://archive.canonical.com/ubuntu trusty partner

deb http://security.ubuntu.com/ubuntu bionic-security main restricted multiverse
deb-src http://security.ubuntu.com/ubuntu bionic-security main
deb http://security.ubuntu.com/ubuntu bionic-security universe
deb-src http://security.ubuntu.com/ubuntu bionic-security universe
# deb http://security.ubuntu.com/ubuntu trusty-security multiverse
# deb-src http://security.ubuntu.com/ubuntu trusty-security multiverse

# deb http://download.webmin.com/download/repository sarge contrib
# deb-src http://download.webmin.com/download/repository sarge contrib
deb http://archive.ubuntu.com/ubuntu bionic universe

Any help would be appreciated!

Regards.

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2 answers

I found a solution on my own.. I completely replaced sources.list with the real ubuntu 18.04 one, rather than the digital ocean mirror list. It seems the Digital Ocean mirrors are problematic.

Original source.list can be found here:

https://gist.github.com/h0bbel/4b28ede18d65c3527b11b12fa36aa8d1

Afterwards the update work without a hitch.

Make sure if you have any special repositories outside of the ubunutu ones (like webmin, plex, etc.), that you backup your sources list first. You’ll likely need to copy those back into the source.list after 20.04 is done installing and rebooted.

Same here. Would be useful to hear from DO how to solve this.

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