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I have a fresh install of ubuntu 18.04.1. Running journalctl -b -p err in terminal I get:

jim@jim-Z1-7623:~$ journalctl -b -p err
-- Logs begin at Wed 2018-10-10 05:02:41 CDT, end at Mon 2018-10-15 04:23:44 CDT. --
Oct 15 04:07:18 jim-Z1-7623 lightdm[901]: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shar
Oct 15 04:07:18 jim-Z1-7623 lightdm[901]: PAM adding faulty module: pam_kwallet.so
Oct 15 04:07:18 jim-Z1-7623 lightdm[901]: PAM unable to dlopen(pam_kwallet5.so): /lib/security/pam_kwallet5.so: cannot open sh
Oct 15 04:07:18 jim-Z1-7623 lightdm[901]: PAM adding faulty module: pam_kwallet5.so
Oct 15 04:07:19 jim-Z1-7623 wpa_supplicant[741]: dbus: wpa_dbus_get_object_properties: failed to get object properties: (none)
Oct 15 04:07:19 jim-Z1-7623 wpa_supplicant[741]: dbus: Failed to construct signal
Oct 15 04:07:20 jim-Z1-7623 lightdm[988]: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shar
Oct 15 04:07:20 jim-Z1-7623 lightdm[988]: PAM adding faulty module: pam_kwallet.so
Oct 15 04:07:20 jim-Z1-7623 lightdm[988]: PAM unable to dlopen(pam_kwallet5.so): /lib/security/pam_kwallet5.so: cannot open sh
Oct 15 04:07:20 jim-Z1-7623 lightdm[988]: PAM adding faulty module: pam_kwallet5.so
Oct 15 04:07:31 jim-Z1-7623 NetworkManager[748]: <error> [1539594451.1039] wifi-wext: (wlx08863b9276e2): error setting powersa
Oct 15 04:07:31 jim-Z1-7623 wpa_supplicant[741]: bgscan simple: Failed to enable signal strength monitoring
Oct 15 04:07:31 jim-Z1-7623 systemd[1]: Failed to start Postfix Mail Transport Agent (instance -).
Oct 15 04:07:34 jim-Z1-7623 spice-vdagent[1332]: Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0
Oct 15 04:07:39 jim-Z1-7623 pulseaudio[1470]: [pulseaudio] pid.c: Daemon already running.
Oct 15 04:08:00 jim-Z1-7623 pulseaudio[1416]: [pulseaudio] bluez5-util.c: GetManagedObjects() failed: org.freedesktop.DBus.Err

It seems that lightdm is looking for libpam-kwallet, but this was not installed by default. What files do I need to install to correct this error?

Thanks,

muru
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Jim Harris
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    Possible duplicate of [How do I find the package that provides a file?](https://askubuntu.com/questions/481/how-do-i-find-the-package-that-provides-a-file) – muru Oct 15 '18 at 09:47
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    `pam_kwallet.so` is in [`libpam-kwallet4`](https://packages.ubuntu.com/search?suite=bionic&arch=any&mode=exactfilename&searchon=contents&keywords=pam_kwallet.so) (and `pam_kwallet5.so` by `libpam-kwallet5`). But you can ignore those errors, they're harmless. Or comment out the kwallet lines in `/etc/pam.d/lightdm*`. – muru Oct 15 '18 at 09:49

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