Hi Yutaka, good morning!
> The exact cause would be there is an empty cache remained in > gnome-keyring-daemon. In my case, it is under: [...] > Attached is a Python script (I name it test_clear.py) to clear the cache > entry (your specific keygrip is hard-coded). You need python3-gi > package (and ignoring warning about version specification). Bingo! That worked like a charm! Thanks a bit lot, that helped. I leave it to you to close/rename/reassign this bug, not sure what should be best done with it. It is strange that there was a empty pwd stored. > https://dev.gnupg.org/T4340 I see you have already added support for that, big thanks. All the best and thanks a lot Norbert -- PREINING Norbert http://www.preining.info Accelia Inc. + JAIST + TeX Live + Debian Developer GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13