I also experienced this bug. I was running Ubuntu 18.04, and I upgraded to Ubuntu 20.20 yesterday by running `update-manager -d` on the command-line, which launched the GUI. During the upgrade itself, I was shown a dialog displaying an error relating to pam.
I've attached apt-term.log (for me) to this comment. Here is the relevant error, I think, I don't know how to find the core dump:
Preparing to unpack .../libpam0g_1.3.1-5ubuntu4_amd64.deb ...
Unpacking libpam0g:amd64 (1.3.1-5ubuntu4) over (1.1.8-3.6ubuntu2.18.04.1) ...
Setting up libpam0g:amd64 (1.3.1-5ubuntu4) ...
Fontconfig warning: "/etc/fonts/conf.avail/53-monospace-lcd-filter.conf", line 10: Having multiple values in <test> isn't supported and may not work as expected
GLib-GObject-WARNING **: specified class size for type 'PangoCairoFcFont' is smaller than the parent type's 'PangoFcFont' class size at /usr/lib/x86_64-linux-gnu/perl5/5.30/Glib/Object/Introspection.pm line 67.
GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed at /usr/lib/x86_64-linux-gnu/perl5/5.30/Glib/Object/Introspection.pm line 67.
GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed at /usr/lib/x86_64-linux-gnu/perl5/5.30/Glib/Object/Introspection.pm line 67.
GLib-GObject-CRITICAL **: g_object_new_valist: assertion 'G_TYPE_IS_OBJECT (object_type)' failed at /usr/lib/x86_64-linux-gnu/perl5/5.30/Glib/Object/Introspection.pm line 67.
dpkg: error processing package libpam0g:amd64 (--configure):
installed libpam0g:amd64 package post-installation script subprocess was killed by signal (Segmentation fault), core dumped
Errors were encountered while processing:
libpam0g:amd64
(Reading database ...
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 276143 files and directories currently installed.)
Preparing to unpack .../libpam-modules-bin_1.3.1-5ubuntu4_amd64.deb ...
Unpacking libpam-modules-bin (1.3.1-5ubuntu4) over (1.1.8-3.6ubuntu2.18.04.1) ...
dpkg: dependency problems prevent configuration of libpam-modules-bin:
libpam-modules-bin depends on libpam0g (>= 0.99.7.1); however:
Package libpam0g:amd64 is not configured yet.
dpkg: error processing package libpam-modules-bin (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
libpam-modules-bin
dpkg: regarding .../libpam-modules_1.3.1-5ubuntu4_amd64.deb containing libpam-modules:amd64, pre-dependency problem:
libpam-modules:amd64 pre-depends on libpam0g (>= 1.3.1)
libpam0g:amd64 latest configured version is 1.1.8-3.6ubuntu2.18.04.1.
dpkg: error processing archive /var/cache/apt/archives/libpam-modules_1.3.1-5ubuntu4_amd64.deb (--unpack):
pre-dependency problem - not installing libpam-modules:amd64
Errors were encountered while processing:
/var/cache/apt/archives/libpam-modules_1.3.1-5ubuntu4_amd64.deb
dpkg: error processing package libpam-modules:amd64 (--configure):
package libpam-modules:amd64 is already installed and configured
Errors were encountered while processing:
libpam-modules:amd64
I also experienced this bug. I was running Ubuntu 18.04, and I upgraded to Ubuntu 20.20 yesterday by running `update-manager -d` on the command-line, which launched the GUI. During the upgrade itself, I was shown a dialog displaying an error relating to pam.
I've attached apt-term.log (for me) to this comment. Here is the relevant error, I think, I don't know how to find the core dump:
Preparing to unpack .../libpam0g_ 1.3.1-5ubuntu4_ amd64.deb ... 3.6ubuntu2. 18.04.1) ... conf.avail/ 53-monospace- lcd-filter. conf", line 10: Having multiple values in <test> isn't supported and may not work as expected WARNING **: specified class size for type 'PangoCairoFcFont' is smaller than the parent type's 'PangoFcFont' class size at /usr/lib/ x86_64- linux-gnu/ perl5/5. 30/Glib/ Object/ Introspection. pm line 67. CRITICAL **: g_type_ add_interface_ static: assertion 'G_TYPE_ IS_INSTANTIATAB LE (instance_type)' failed at /usr/lib/ x86_64- linux-gnu/ perl5/5. 30/Glib/ Object/ Introspection. pm line 67. x86_64- linux-gnu/ perl5/5. 30/Glib/ Object/ Introspection. pm line 67. CRITICAL **: g_object_ new_valist: assertion 'G_TYPE_IS_OBJECT (object_type)' failed at /usr/lib/ x86_64- linux-gnu/ perl5/5. 30/Glib/ Object/ Introspection. pm line 67. modules- bin_1.3. 1-5ubuntu4_ amd64.deb ... 3.6ubuntu2. 18.04.1) ...
Unpacking libpam0g:amd64 (1.3.1-5ubuntu4) over (1.1.8-
Setting up libpam0g:amd64 (1.3.1-5ubuntu4) ...
Fontconfig warning: "/etc/fonts/
GLib-GObject-
GLib-GObject-
GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed at /usr/lib/
GLib-GObject-
dpkg: error processing package libpam0g:amd64 (--configure):
installed libpam0g:amd64 package post-installation script subprocess was killed by signal (Segmentation fault), core dumped
Errors were encountered while processing:
libpam0g:amd64
(Reading database ...
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 276143 files and directories currently installed.)
Preparing to unpack .../libpam-
Unpacking libpam-modules-bin (1.3.1-5ubuntu4) over (1.1.8-
dpkg: dependency problems prevent configuration of libpam-modules-bin:
libpam-modules-bin depends on libpam0g (>= 0.99.7.1); however:
Package libpam0g:amd64 is not configured yet.
dpkg: error processing package libpam-modules-bin (--configure): modules_ 1.3.1-5ubuntu4_ amd64.deb containing libpam- modules: amd64, pre-dependency problem: modules: amd64 pre-depends on libpam0g (>= 1.3.1) 6ubuntu2. 18.04.1.
dependency problems - leaving unconfigured
Errors were encountered while processing:
libpam-modules-bin
dpkg: regarding .../libpam-
libpam-
libpam0g:amd64 latest configured version is 1.1.8-3.
dpkg: error processing archive /var/cache/ apt/archives/ libpam- modules_ 1.3.1-5ubuntu4_ amd64.deb (--unpack): modules: amd64 apt/archives/ libpam- modules_ 1.3.1-5ubuntu4_ amd64.deb modules: amd64 (--configure): modules: amd64 is already installed and configured modules: amd64
pre-dependency problem - not installing libpam-
Errors were encountered while processing:
/var/cache/
dpkg: error processing package libpam-
package libpam-
Errors were encountered while processing:
libpam-