Thank you for taking the time to report this issue and helping to make Ubuntu better.
Examining the information you have given us, this does not appear to be a bug report so I am marking it incomplete and suggesting you seek support. Processing triggers for man-db (2.7.5-1) ... dpkg: error processing package firefox (--configure): package is in a very bad inconsistent state; you should reinstall it before attempting configuration In the description you mentioned "I found /var/lib/dpkg/lock-frontend was locked by dpkg when I was trying to install other app, then i killed it" which is the most likely cause of this problem. The lock is there to prevent another process from trying to install/remove/upgrade software whilst a process is already writing to that system. You killed this safety/protection system allowing corruption. You can also find help with your problem in the support forum of your local Ubuntu community http://loco.ubuntu.com/ or asking at https://askubuntu.com or https://ubuntuforums.org, or for more support options please look at https://discourse.ubuntu.com/t/community- support/709 For help on reporting bugs, see https://help.ubuntu.com/community/ReportingBugs. If you believe I'm in error, or can detail how you ensured nothing in fact was doing any updates explaining the lock, or have cleaned up the mess created, and still have the problem, please return the status to "New" leaving a comment. ** Changed in: firefox (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1858067 Title: package firefox 71.0+build5-0ubuntu0.16.04.1 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1858067/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
