Comment 14 for bug 1781418

After the package upgrade to libpam-kwallet 4:5.12.7 from bionic-proposed the issue has gone away. That seems to be due to commit 8da1a470 included in this version:

commit 8da1a47035fc92bc1496059583772bc4bd6e8ba6
Author: Maximiliano Curia <email address hidden>
Date: Fri May 4 22:06:06 2018 +0200

    Avoid giving an stderr to kwallet

    Summary:
    The fixes for CVE-2018-10380 introduced a regression for most users not
    using kde, and some for kde sessions. In particular the reorder of the
    close calls and creating a new socket caused that the socket is always
    assigned the file descriptor 2, aka stderr.

    BUG: 393856

    Test Plan: It works

    Reviewers: #plasma, aacid

    Reviewed By: aacid

    Subscribers: asturmlechner, rdieter, davidedmundson, plasma-devel

    Tags: #plasma

    Differential Revision: https://phabricator.kde.org/D12702