Comment 23 for bug 473139

In order to prevent SVN from asking you for 'login' keyring password you may try to add the following line to [auth] section in ~/.subversion/conf :
password-stores =

E.g.
--- cut ---
### saving of *new* credentials; it doesn't invalidate existing
### caches. (To do that, remove the cache files by hand.)
# store-auth-creds = no
password-stores =

### Section for configuring external helper applications.
[helpers]
--- cut ---