The cache files are not user editable. The purpose of the cache is lightdm reads from it if ~/.dmrc does not exist (e.g. if the home directory is not yet mounted). if changing ~/.dmrc does not updated lightdm, then this is a bug in lightdm.
The cache files are not user editable. The purpose of the cache is lightdm reads from it if ~/.dmrc does not exist (e.g. if the home directory is not yet mounted). if changing ~/.dmrc does not updated lightdm, then this is a bug in lightdm.