uf-linux

Fix the Error “debconf: DbDriver “config”: /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable”

You have encountered the above error in Debian or Debian based GNU/Linux Distribution.

This may cause problems like:

  • errors in sudo apt-get update, sudo apt-get upgrade, sudo apt-get install, and other processes.
  • dpkg: error processing package
  • post-installation script subprocess returned error exit status 1
  • Errors were encountered while processing
  • E: Sub-process /usr/bin/dpkg returned an error code (1)

Solution

Step 1. Execute command in terminal

sudo fuser -v /var/cache/debconf/config.dat

Step 2. You will get result in following format. Copy the PID from it.

USER        PID ACCESS COMMAND

Step 3. Execute command. Replace PID with your actual PID. If the first command works, then the second command will give the output “No such process”

sudo kill PID   or   sudo kill -9 PID 

Step 4. Now you will not get the error.

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