The An operation is already pending error is very generic and many things can cause this. (other answers don't relate to my problem).

I have a Luks encrypted volume that I clicked to open, a password prompt appeared, and I waited too long to enter the password. (It normally works just fine.) Now, whenever I try to open it, I just get that error instead of the password prompt.

I'm sure rebooting the computer would fix it, but I don't want to do that... I'm sure it's just some sort of mount lock that needs to be manually released. How do I release the lock manually so I can try again?

The OS is Mate on Mint 17.3.


Run htop from terminal or open your system monitor find the pid of the process in use and use the kill command to stop the process.

  • also what method are you using to open the encrypted vol? – CGar4 Apr 18 '18 at 15:36
  • on mint it should be something like this "sudo cryptsetup -v luksOpen /dev/sdc1 sdc1crypt" if you are using the terminal that is. – CGar4 Apr 18 '18 at 15:37

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