Use jammy ubuntu version, for install the PGAdmin on linux-mint.

1) Install the public key for the repository (if not done previously):

sudo curl https://www.pgadmin.org/static/packages_pgadmin_org.pub | sudo apt-key add

2) Create the repository configuration file: (jammy is important)

sudo sh -c 'echo "deb https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4 main" > /etc/apt/sources.list.d/pgadmin4.list && apt update

3) Install pgAdmin

sudo apt install pgadmin4

4) Install for desktop mode only

sudo apt install pgadmin4-desktop

5) If you need, also install for web mode only:

sudo apt install pgadmin4-web 

6) After install pgadmin4. Configure the webserver, (if you installed pgadmin4-web)

sudo /usr/pgadmin4/bin/setup-web.sh

Reference :

• https://stackoverflow.com/questions/68777587/linux-mint-20-x-ubuntu-based-cant-install-pgadmin4
• https://www.pgadmin.org/download/pgadmin-4-apt/

Use jammy ubuntu version, for install the PGAdmin on linux-mint.

1) Install the public key for the repository (if not done previously):

sudo curl https://www.pgadmin.org/static/packages_pgadmin_org.pub | sudo apt-key add

2) Create the repository configuration file: (jammy is important)

sudo sh -c 'echo "deb https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4 main" > /etc/apt/sources.list.d/pgadmin4.list && apt update

3) Install pgAdmin

sudo apt install pgadmin4

4) Install for desktop mode only

sudo apt install pgadmin4-desktop

5) If you need, also install for web mode only:

sudo apt install pgadmin4-web 

6) After install pgadmin4. Configure the webserver, (if you installed pgadmin4-web)

sudo /usr/pgadmin4/bin/setup-web.sh

Reference :

• https://stackoverflow.com/questions/68777587/linux-mint-20-x-ubuntu-based-cant-install-pgadmin4
• https://www.pgadmin.org/download/pgadmin-4-apt/

Linux Mint 22.1 Cinnamon Edition iso
download link
https://mirrors.cicku.me/linuxmint/iso/stable/22.1/linuxmint-22.1-cinnamon-64bit.iso
Installation of Linux Mint 22.1 Cinnamon Edition

make the iso file to a usb installer
then in bios settings make usb as first boot order
insert the pendirve automatically it detects the Linux Mint OS
and this screen will appear

select “start linux mint” then hit enter
we got the linux mint home screen

now double click the “install linux mint” icon
in the welcome screen choose “English” and continue

select keyboard layout to English (US) and continue

Next we got the multimedia codecs wizard leave as it is and
hit continue

next we got the installation type wizard
select “something else ” and continue

in the next wizard click “New Partition Table”

we got the “create new empty partition table on this device ?” wizard
click continue

then select the free space and click “+”

we got the create partition wizard
give the size for root partition (Maximum size 85%)
use as “Ext4 journaling file system”
Mount point : /
then click “OK”

then again select the free space and click “+” sign

give the size for swap (twice the size of RAM usually)
select Use as: swap area
then click “OK”

again select the free space and click “+” sign
give the size for EFI partition 1GB
select Use as: EFI system partition
and click “OK”

again select the free space and click “+” sign
give the size 100 MB for
use as : “Reserved BIOS boot area” then click OK

then click Install continue

the give the time zone as kolkata

then click continue and in the next wizard
give username , computer name , password
either choose login automatically or require password

then click “continue”
the installation process took  a while
when the installation complete
it will ask to remove the installation medium and press ENTER

the system reboots and Linux Mint cinnamon home page will be displayed