Ubuntu requires a key ring to unlock the password

I changed the Default User Password When operating Ubuntu yesterday. When I log on today, I am prompted that the boot password does not match the password in the key ring. I need to enter the key ring password, after some column passwords I tried yesterday, I finally logged on to Ubuntu. Although I remember the password, it is troublesome to enter the password twice each time I start the system. All the following are my solutions.

To enter Ubuntu only by entering the boot password, you only need to remove the password in the key ring.
The procedure is as follows:

Open ApplicationProgram-Attachment-password and encryption key (or enter seahorse in the terminal), switch to the password tab, you will see a password key ring (my key ring is login), right-click to change the password, do not fill in anything and submit it directly. In this way, the password of the default key ring is removed.