Translations:Faq/Writer/LinuxDefaultPageSize/4/en

    From The Document Foundation Wiki

    So, when one has properly set LC_* variables (say, that should result in A4), but one’s paperconf returns letter, then LibreOffice will default to the Letter size. This is incorrect system’s configuration, and not an error on LibreOffice side. In this case, one needs to consult OS user guide to properly configure the paperconf to resolve the problem.