[Pkg-shadow-devel] Bug#876737: login: sometimes fails

[Jiff]

Package: login
Version: 1:4.4-4.1
Severity: normal

Dear Maintainer,

   * What led up to the situation?

Making a "su -" from within a terminal emulator tab, after at least one
system RAM suspension.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

When confirming, it immediately displays:
$ su -
Password:
su: Authentication failure
$

This is hitting all the same terminal emulator tabs,
but others TE aren't impacted.

   * What was the outcome of this action?

Unable to su to the root account.

This began about 1~2 months ago (not sure about the timing though.)

   * What outcome did you expect instead?

Being able to su - at any time.



-- System Information:
Debian Release: 9.1
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-3-rt-amd64 (SMP w/4 CPU cores; PREEMPT)
Locale: LANG=fr_FR.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages login depends on:
ii  libaudit1       1:2.6.7-2
ii  libc6           2.24-11+deb9u1
ii  libpam-modules  1.1.8-3.6
ii  libpam-runtime  1.1.8-3.6
ii  libpam0g        1.1.8-3.6

login recommends no packages.

login suggests no packages.

-- no debconf information