Installing Driver
2. Installing GDebi
Checking/Installing GDebi Package Installer
Because GDebi Manage All the Eventual needed Setup Dependencies:which gdebi
If Not there then:
sudo apt install gdebi-core gdebi
3. Downloading Lexmark Printer Driver
Download Lexmark Printer in MX GNU/Linux
Searching or Browsing for your’s Printer Model.
And Grab the Latest Available Release.4. Installing Lexmark Printer Driver
Then to Install Lexmark Printer Driver on MX Linux
From Command Line play:sudo gdebi ~/Downloads/*exmark*.deb
But if you are in Trouble to Find the Location on Terminal then See: How to Access Downloads Folder from Browser.
Or Double-Click/Right-Click on it on the File Manager and Open with GDebi: