Recently, I completely erased the old disk data and installed the 20.04 LTS version of Ubuntu. However, Ubuntu software is not working properly. Also I can't even install the software. Please refer to the following: Why don't appear categories items in Ubuntu Software?
Therefore, I tried to reinstall the Ubuntu software by referring to the following documents, but the following error occurred:
Hit:1 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:2 http://kr.archive.ubuntu.com/ubuntu focal InRelease
Get:3 http://kr.archive.ubuntu.com/ubuntu focal-updates InRelease [89.1 kB]
Hit:4 http://kr.archive.ubuntu.com/ubuntu focal-backports InRelease
Get:5 http://kr.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [648 B]
Get:6 http://kr.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [2,000 B]
Fetched 91.8 kB in 2s (44.6 kB/s)
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package software-center is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'software-center' has no installation candidate
+ Update-1
The installed pkgs:
ii appstream 0.12.10-2 amd64 Software component metadata management
ii brltty 6.0+dfsg-4ubuntu6 amd64 Access software for a blind person using a braille display
ii docbook-xml 4.5-9 all standard XML documentation system for software and systems
ii espeak-ng-data:amd64 1.50+dfsg-6 amd64 Multi-lingual software speech synthesizer: speech data files
ii gnome-software 3.36.0-0ubuntu3 amd64 Software Center for GNOME
ii gnome-software-common 3.36.0-0ubuntu3 all Software Center for GNOME (common files)
ii gnome-software-plugin-snap 3.36.0-0ubuntu3 amd64 Snap support for GNOME Software
ii libdv4:amd64 1.0.0-12 amd64 software library for DV format digital video (runtime lib)
ii libespeak-ng1:amd64 1.50+dfsg-6 amd64 Multi-lingual software speech synthesizer: shared library
ii libqpdf26:amd64 9.1.1-1build1 amd64 runtime library for PDF transformation/inspection software
ii libtss2-esys0 2.3.2-1 amd64 TPM2 Software stack library - TSS and TCTI libraries
ii python3-software-properties 0.98.9 all manage the repositories that you install software from
ii software-properties-common 0.98.9 all manage the repositories that you install software from (common)
ii software-properties-gtk 0.98.9 all manage the repositories that you install software from (gtk)
ii xbrlapi 6.0+dfsg-4ubuntu6 amd64 Access software for a blind person using a braille display - xbrlapi
+Update-2
Snap-list:
Name Version Rev Tracking Publisher Notes
chromium 81.0.4044.122 1123 latest/stable canonical✓ -
core18 20200311 1705 latest/stable canonical✓ base
gimp 2.10.18 252 latest/stable snapcrafters -
gnome-3-28-1804 3.28.0-16-g27c9498.27c9498 116 latest/stable canonical✓ -
gnome-3-34-1804 0+git.2c86692 27 latest/stable/… canonical✓ -
gtk-common-themes 0.1-36-gc75f853 1506 latest/stable/… canonical✓ -
libreoffice 6.4.3.2 177 latest/stable canonical✓ -
snap-store 3.36.0-74-ga164ec9 433 latest/stable/… canonical✓ -
snapd 2.44.3 7264 latest/stable canonical✓ snapd
Install
You can install Ubuntu Software like so:
or install Gnome Software in newer releases of Ubuntu like so:
Reinstall
You can reinstall Ubuntu Software like so:
or reinstall Gnome Software in newer releases of Ubuntu like so:
Reset
You can reset Ubuntu Software to its vanilla settings.
First, purge it like so:
Then, install it like so:
or reset Gnome Software in newer releases of Ubuntu.
First, purge it like so:
Then, install it like so:
Notice
You can remove Snap Store that might be already installed ( although I recommend you leave it ) like so:
and you can install Snap Store again like so:
I heard they switched to snap store. You may try either of the two.
OR
You can try looking at the snap store website and downloading the store from there snap store