*** This bug is a duplicate of bug 1679435 ***
https://bugs.launchpad.net/bugs/1679435
I just ran into the same problem:
```
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88299.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88306.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88315.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88322.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88331.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88338.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88347.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88354.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88363.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88370.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88379.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88386.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88395.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88402.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88411.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88418.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88427.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88434.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88443.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88450.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88459.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88466.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88475.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88482.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88491.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88498.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88507.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88514.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88523.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88530.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88539.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88546.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88555.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 88562.
```
And the line number is increasing every time, high cpu usagec aused by
pkg-debconf-helpber.
Killling this process led to different errors:
```
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 91263.
Use of uninitialized value in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 227, <GEN0> line 91263.
Use of uninitialized value $ret in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 237, <GEN0> line 91263.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 91263.
Use of uninitialized value in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 227, <GEN0> line 91263.
Use of uninitialized value $ret in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 237, <GEN0> line 91263.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 91263.
Use of uninitialized value in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 227, <GEN0> line 91263.
Use of uninitialized value $ret in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 237, <GEN0> line 91263.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 91263.
Use of uninitialized value in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 227, <GEN0> line 91263.
Use of uninitialized value $ret in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 237, <GEN0> line 91263.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 91263.
Use of uninitialized value in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 227, <GEN0> line 91263.
Use of uninitialized value $ret in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 237, <GEN0> line 91263.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 91263.
Use of uninitialized value in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 227, <GEN0> line 91263.
Use of uninitialized value $ret in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 237, <GEN0> line 91263.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 91263.
Use of uninitialized value in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 227, <GEN0> line 91263.
Use of uninitialized value $ret in string eq at
/usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 237, <GEN0> line 91263.
Use of uninitialized value $_[1] in join or string at
/usr/share/perl5/Debconf/DbDriver/Stack.pm line 111, <GEN0> line 91263.
...
```
So I killed the update-manager python process, removed
/var/lib/dpkg/lock-frontend, /var/lib/dpkg/lock. and
/var/lib/apt/lists/lock and ran
```
sudo dpkg --configure -a
...
Errors were encountered while processing:
grub-efi-amd64-signed
```
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to debconf in Ubuntu.
https://bugs.launchpad.net/bugs/1646739
Title:
"Use of uninitialized value" in debconf via update-manager
Status in debconf package in Ubuntu:
Confirmed
Status in php7.0 package in Ubuntu:
Confirmed
Status in samba package in Ubuntu:
Confirmed
Status in update-manager package in Ubuntu:
Confirmed
Bug description:
During a software upgrade, process was stuck on php7.0-xml
configuration for 20 minutes, after that I killed the process. I am
not sure what additional info are required, will be happy to provide
any.
ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: php7.0-xml 7.0.13-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 4.4.0-49.70-generic 4.4.30
Uname: Linux 4.4.0-49-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.2
Architecture: amd64
Date: Fri Dec 2 09:52:06 2016
ErrorMessage: subprocess installed post-installation script returned error
exit status 128
InstallationDate: Installed on 2016-03-11 (265 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64
(20151021)
RelatedPackageVersions:
dpkg 1.18.4ubuntu1.1
apt 1.2.15
SourcePackage: php7.0
Title: package php7.0-xml 7.0.13-0ubuntu0.16.04.1 failed to install/upgrade:
subprocess installed post-installation script returned error exit status 128
UpgradeStatus: Upgraded to xenial on 2016-05-07 (209 days ago)
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https://bugs.launchpad.net/ubuntu/+source/debconf/+bug/1646739/+subscriptions
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