Ubuntu 18.04 Error : We cannot detect a running copy of GNOME on this system.

You might be trying to install GNOME-Shell Extension from browser and got an error like "We cannot detect a running copy of GNOME on this system, so some parts of the interface may be disabled"

Fix : Install GNOME Shell Integration plugin

How to install it, lets follow the below steps.

For Chrome :

• Chrome Web Store --> Search for "Gnome shell integration" --> Add to Chrome
• Open Terminal and install chrome-gnome-shell

sudo apt-get install chrome-gnome-shell

• Restart Browser and try to install additional Gnome extensions.

For Firefox :

• Firefox Add On --> Search for "Gnome shell integration" --> Add to Firefox --> Followup the instructions asked by Firefox to add it.

• Restart Browser and try to install additional Gnome extensions.

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Ubuntu Fix : Could not open lock file /var/lib/dpkg/lock-frontend - open (2: No such file or directory)

Full Error :

E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

Fix :

$ ps aux | grep -i apt

: Find the corresponding PIDs, Kill using ( kill -9 <PID> and check if error went.

An alternate for the above is to run below command.

sudo killall apt apt-get

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