This is the error message I get:

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?


This may happen if

1. ‘Synaptic Package Manager’ or ‘Software Updater’ is open.

2. Some apt command is running in Terminal.

3. Some apt process is running in background.

For above wait for the process to complete. If this does not happen run in terminal:

sudo killall apt apt-get


If none of the above works, remove the lock files.

Run in terminal: ( Note that this can seriously break your system. )

sudo rm /var/lib/apt/lists/lock

sudo rm /var/cache/apt/archives/lock

sudo rm /var/lib/dpkg/lock*

then reconfigure the packages. Run in terminal:

sudo dpkg –configure -a


sudo apt update

That should do the job.