Bad password when unlocking disk (cryptsetup failed)

[philippe christin]

I have done a  new installation of Ubuntu 20.04.3-desktop-amd64 with LVM encryption enabled (from live USB, then install UBUNTU). The process finished without any problem, but when the PC reboots, I enter my password but I cannot unlock the disk.
I got the error : "Please unlock disk sdb3_crypt. Cryptsetup: ERROR:sdb3_crypt: cryptsetup failed, bad password or options ?"

My password has special char "/".

If I redo the full process with a password without this special char "/", there is no error.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Libera.chat.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1965562/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Brian Murray (brian-murray)]

What keyboard layout were you using during the installation process?

[philippe christin (philgood-fr)]

I tried US keyboard and French Azerty keyboard : same behavior