I tried upgrading xfce desktop with -
sudo apt-get upgrade xfce4
For unknown reasons the process was not completed. After it whenever I tried issuing a sudo apt-get command, it resulted in -
dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
Now my entire system has no icons, not a single one. Some packages must have not been installed. Some research resulted in two solutions.
sudo dpkg --configure -a
This resulted in a box (I don't know whether it is an error box or an instruction box.) I tried taking a screenshot, but alas! Couldn't take it also. I've copy pasted the text here.
Configuring Secure Boot
│ Your system has UEFI Secure Boot enabled.
│
│ UEFI Secure Boot requires additional configuration to work with
│ third-party drivers.
│
│ The system will assist you in configuring UEFI Secure Boot. To permit
│ the use of third-party drivers, a new Machine-Owner Key (MOK) has been
│ generated. This key now needs to be enrolled in your system's firmware.
│
│ To ensure that this change is being made by you as an authorized user,
│ and not by an attacker, you must choose a password now and then confirm
│ the change after reboot using the same password, in both the "Enroll
│ MOK" and "Change Secure Boot state" menus that will be presented to you
│ when this system reboots.
│
│ <Ok>
Please guide me what should I do, whether I should reinstall the whole system, or still there is some way by which I can handle this.
Go to BIOS of your system by pressing ESC or f2 (key depends on company model, asus-f2,. Hp-esc etc) on startup. Find the 'Secure Boot' option and disable it. Then again do the
sudo dpkg --configure -a