After installing mBlock you need to download and install mlink for Showing the ports

Download mlink from here

For Debian, Ubuntu Download: linux.deb
For Red Hat, Fedora, SUSE, CentOS: linux.rpm
After installing mLink package
Input the following command in Terminal to start up mLink:

sudo mblock-mlink start
Note: After mLink starts up, please keep the Terminal window open to ensure hardware connection.

Above will solve
mBlock installation problem in linux
mBlock not showing port in linux
mBlock installation problem in Ubuntu
mBlock not showing port in Ubuntu
mBlock mLink installation in Ubuntu
mBlock mLink installation in Linux
mLink not installaing 
mLink installation problem

When you are going to download mBlock for PC now you could see download options for Windows and MAC only. Don't worry here you can get step by step instruction to install mBlock / Makeblock software in Linux.

Download your Linux version from this link

Legacy versions of mBlock 4

Debian/Ubuntu 32bit (.deb)
Debian/Ubuntu 64bit (.deb)

After installing mBlock you need to download and install mlink for Showing the ports

Download mlink from here

For Debian, Ubuntu Download: linux.deb
For Red Hat, Fedora, SUSE, CentOS: linux.rpm

After installing mLink package

Input the following command to start up mLink:

sudo mblock-mlink start

Note: After mLink starts up, please keep the Terminal window open to ensure hardware connection.

Above will solve
mBlock installation problem in linux
mBlock not showing port in linux
mBlock installation problem in Ubuntu
mBlock not showing port in Ubuntu
mBlock mLink installation in Ubuntu
mBlock mLink installation in Linux
mLink not installaing
mLink installation problem

CH341SER_LINUX

In Raspbian for Raspberry Pi

Run the following commands in the CLI/Terminal when using Raspbian on a Raspberry Pi. After updating, the latest CH340 should be installed!

sudo apt-get update
sudo apt-get upgrade

Other Linux Distributions

Here is a list of drivers, In that click Driver Download for Linux.

There are some reported cases of serial communication failure when using the factory drivers in Linux. If you encounter this problem, you can try Installing patched drivers. Here are the steps (to run in the command line):

• Plug and unplug your CH340 device from the USB port
• Type dmesg to see what has happened
  • The expected output (shows "ch341") should have the following in the recent log:

[  xxx] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[  xxx] ch341 3-2:1.0: device disconnected 

• Download the Patched Driver and unzip
• cd into the directory where the files are saved
• make clean
• make
• sudo make load
• sudo rmmod ch341 to uninstall the broken driver
• lsmod | grep ch34 to list what modules are currently installed
• Plug and unplug your CH340 device again on the USB port
• dmesg
  • Expected output (should show "ch34x" now):

[  xxx] ch34x ttyUSB0: ch34x converter now disconnected from ttyUSB0
[  xxx] ch34x 3-2:1.0: device disconnected

Depending on your root permissions, you may need to configure the serial port with the following two commands. Make sure to adjust the $username with respect to the user ID that is currently logged in.

sudo usermod -a -G dialout $username 
sudo chmod a+rw /dev/ttyUSB0

Depending on how the CH340 enumerated on your computer, the /dev/ttyUSB0 may be different. Try using ls command as explained in the Driver Verification if you have issues configuring the serial port settings and adjusting the port as necessary. 

Checking Driver Working for Linux

Please connect the device with the computer and type the following in the terminal 

ls /dev/ttyUSB*

You should see this if the driver is ok