Being prompted for Password for '(null)' GNOME keyring

You can commit your project using subversion as follows:

svn commit -m “Your comment message goes here ”  - - username <yourusername>

Then the following prompt should be displayed to you for committing your project successfully…

Password for ‘<yourusername>’:

For this password, you should provide your <yourusername> password assigned to you while hosting your project.

First time commit to your project using svn commit will work properly.

However for subsequent commit to your project, you can get the prompt like...

Password for ‘(null)’ GNOME keyring:

The reason for above error message  is multiple keyrings are present on a users system. All users will have a default keyring, and another which is only stored in memory. For each commit, gnome-keyring stores the user details in another keyring. 

To disable keyring, open the config file in the subversion from the home folder as follows:

patilkr@patilkr-desktop:~$ cd .subversion/
patilkr@patilkr-desktop:~$ ls
auth  config  README.txt  servers

Open the ‘config’ file with any text editor,
patilkr@patilkr-desktop:~/.subversion$ gedit config
Inside the text file, look for the line ‘password-stores = no’ under ‘[auth]‘ section and uncomment it & remove the value ‘no’ for it to look like ‘password-stores = ‘. 
Then, save and close config file.
Finally, open another file named ‘servers’ in any text editor,
patilkr@patilkr-desktop:~/.subversion$ gedit servers
Inside the text file, look for the line ‘store-passwords = no’ under ‘[global]‘ section and just uncomment it. 
Then, save and close ‘servers’ file.