после обновления с Ubuntu 18.04 до 20.04: 'apt-get update' не работает с dpkg «Подпроцесс сценария предварительного удаления был прерван сигналом (Завершено)»

После обновления с 18.04 до 20.04 многие команды apt не работают: apt-get update , apt-get remove pritunl-client-gtk (то же самое для purge ), apt-get --fix-broken install , apt-get autoremove .

Все они терпят неудачу: установленный подпроцесс сценария предварительного удаления пакета pritunl-client-gtk был прерван сигналом (Завершено) . 12174] Вот некоторые результаты (сокращенные на [...]):

:~$ sudo apt-get update
Hit:1 http://ubuntu.ethz.ch/ubuntu focal InRelease
Ign:2 http://dl.google.com/linux/chrome-remote-desktop/deb stable InRelease                                                                                                           
[...]
Get:26 http://ubuntu.ethz.ch/ubuntu focal-security/universe amd64 DEP-11 Metadata [55.7 kB]
Fetched 3,242 kB in 2s (1,802 kB/s)                                        
appstreamcli: symbol lookup error: appstreamcli: undefined symbol: AS_APPSTREAM_METADATA_PATHS
Reading package lists... Done
N: Skipping acquire of configured file 'stable/binary-i386/Packages' as repository 'https://download.docker.com/linux/ubuntu focal InRelease' doesn't support architecture 'i386'
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://download.mono-project.com/repo/ubuntu stable-focal InRelease' doesn't support architecture 'i386'
E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh-cache > /dev/null; fi'
E: Sub-process returned an error code

:~$ sudo apt-get remove pritunl-client-gtk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  [...]
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED
  pritunl-client-gtk
0 to upgrade, 0 to newly install, 1 to remove and 974 not to upgrade.
After this operation, 1,397 kB disk space will be freed.
Do you want to continue? [Y/n] 
(Reading database ... 335530 files and directories currently installed.)
Removing pritunl-client-gtk (1.0.1865.25-0ubuntu1~xenial) ...
dpkg: error processing package pritunl-client-gtk (--remove):
 installed pritunl-client-gtk package pre-removal script subprocess was killed by signal (Terminated)
dpkg: too many errors, stopping
Errors were encountered while processing:
 pritunl-client-gtk
Processing was halted because there were too many errors.
E: Sub-process /usr/bin/dpkg returned an error code (1)

:~$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
   [...]
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED
  pritunl-client-gtk
0 to upgrade, 0 to newly install, 1 to remove and 974 not to upgrade.
After this operation, 1,397 kB disk space will be freed.
Do you want to continue? [Y/n] 
(Reading database ... 335530 files and directories currently installed.)
Removing pritunl-client-gtk (1.0.1865.25-0ubuntu1~xenial) ...
dpkg: error processing package pritunl-client-gtk (--remove):
 installed pritunl-client-gtk package pre-removal script subprocess was killed by signal (Terminated)
dpkg: too many errors, stopping
Errors were encountered while processing:
 pritunl-client-gtk
Processing was halted because there were too many errors.
E: Sub-process /usr/bin/dpkg returned an error code (1)

Как было предложено в других вопросах, я попытался исправить libappstream :

:~$ dpkg -l '*libappstream*'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                     Version      Architecture Description
+++-========================-============-============-==========================================
ii  libappstream-glib8:amd64 0.7.7-2      amd64        GNOME library to access AppStream services
ii  libappstream4:amd64      0.12.10-2    amd64        Library to access AppStream services

:~$ sudo apt install --reinstall libappstream4 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies.
 pritunl-client-gtk : Depends: python-appindicator but it is not installable
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

Я уже пробовал - исправить -broken install (см. выше), поэтому я попробовал:

~$ sudo apt-get install python-appindicator
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package python-appindicator is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'python-appindicator' has no installation candidate

Таким образом, определенно проблема с отсутствующим python-appindicator (также предлагается здесь ). Я не могу сказать, связано ли это с завершением --remove.

Вопросы (ответа на один из них, вероятно, будет достаточно):

• Как я могу узнать, почему предварительное удаление не выполняется? Могу ли я пропустить предварительное удаление?
• Как я могу принудительно удалить пакет (pritunnel-Clinet-gtk)?
• Где я могу найти python-appindicator для Ubuntu 20.04?

I обнаружил несколько похожих проблем, но ни один из них, похоже, не дает сбоев во время предварительного удаления, поэтому их решения не подходят, см., например, здесь , здесь или здесь .

РЕДАКТИРОВАТЬ

Как просили в комментариях, вот мой список репо:

:~$ grep -r deb /etc/apt/sources.list /etc/apt/sources.list.d
/etc/apt/sources.list:# deb cdrom:[Ubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)]/ bionic main restricted
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal main restricted
/etc/apt/sources.list:# deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic main restricted
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal-updates main restricted
/etc/apt/sources.list:# deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal universe
/etc/apt/sources.list:# deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic universe
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal-updates universe
/etc/apt/sources.list:# deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic-updates universe
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal multiverse
/etc/apt/sources.list:# deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic multiverse
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal-updates multiverse
/etc/apt/sources.list:# deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal-backports main restricted universe multiverse
/etc/apt/sources.list:# deb-src http://gb.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
/etc/apt/sources.list:# deb http://archive.canonical.com/ubuntu bionic partner
/etc/apt/sources.list:# deb-src http://archive.canonical.com/ubuntu bionic partner
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal-security main restricted
/etc/apt/sources.list:# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal-security universe
/etc/apt/sources.list:# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
/etc/apt/sources.list:deb http://ubuntu.ethz.ch/ubuntu/ focal-security multiverse
/etc/apt/sources.list:# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse
/etc/apt/sources.list:# deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main # disabled on upgrade to focal
/etc/apt/sources.list:# deb-src http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main
/etc/apt/sources.list.d/puppet5.list.save:# deb http://apt.puppetlabs.com focal puppet5 # disabled on upgrade to focal
/etc/apt/sources.list.d/puppet5.list.save:# deb-src http://apt.puppetlabs.com bionic puppet5
/etc/apt/sources.list.d/pc_repo.list:# deb https://apt.puppet.com focal puppet5 # disabled on upgrade to focal
/etc/apt/sources.list.d/mono-xamarin.list.distUpgrade:deb https://download.mono-project.com/repo/ubuntu stable-bionic main
/etc/apt/sources.list.d/google-chrome.list.distUpgrade:deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list.d/hnakamur-ubuntu-libarchive-bionic.list.save:# deb http://ppa.launchpad.net/hnakamur/libarchive/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-libarchive-bionic.list.save:# deb-src http://ppa.launchpad.net/hnakamur/libarchive/ubuntu bionic main
/etc/apt/sources.list.d/buildkite-agent.list:# deb https://apt.buildkite.com/buildkite-agent stable main # disabled on upgrade to focal
/etc/apt/sources.list.d/iovisor.list.distUpgrade:deb https://repo.iovisor.org/apt/bionic bionic main
/etc/apt/sources.list.d/vscode.list.save:# deb [arch=amd64] https://packages.microsoft.com/repos/vscode stable main # disabled on upgrade to focal
/etc/apt/sources.list.d/pc_repo.list.save:# deb https://apt.puppet.com focal puppet5 # disabled on upgrade to focal
/etc/apt/sources.list.d/bazel.list.save:deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8
/etc/apt/sources.list.d/docker-ce.list.distUpgrade:deb https://download.docker.com/linux/ubuntu bionic stable
/etc/apt/sources.list.d/google-chrome.list.save:deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list.d/hnakamur-ubuntu-cmake-bionic.list.distUpgrade:deb http://ppa.launchpad.net/hnakamur/cmake/ubuntu bionic main
/etc/apt/sources.list.d/hnakamur-ubuntu-cmake-bionic.list.distUpgrade:# deb-src http://ppa.launchpad.net/hnakamur/cmake/ubuntu bionic main
/etc/apt/sources.list.d/iovisor.list.save:# deb https://repo.iovisor.org/apt/bionic focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/google-cloud-sdk.list:deb http://packages.cloud.google.com/apt cloud-sdk main
/etc/apt/sources.list.d/bluetooth-ubuntu-bluez-bionic.list.save:# deb http://ppa.launchpad.net/bluetooth/bluez/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/bluetooth-ubuntu-bluez-bionic.list.save:# deb-src http://ppa.launchpad.net/bluetooth/bluez/ubuntu bionic main
/etc/apt/sources.list.d/mono-xamarin.list.save:deb https://download.mono-project.com/repo/ubuntu stable-focal main
/etc/apt/sources.list.d/puppet5.list.distUpgrade:deb http://apt.puppetlabs.com bionic puppet5
/etc/apt/sources.list.d/puppet5.list.distUpgrade:# deb-src http://apt.puppetlabs.com bionic puppet5
/etc/apt/sources.list.d/libreoffice-ubuntu-ppa-bionic.list.distUpgrade:deb http://ppa.launchpad.net/libreoffice/ppa/ubuntu bionic main
/etc/apt/sources.list.d/libreoffice-ubuntu-ppa-bionic.list.distUpgrade:# deb-src http://ppa.launchpad.net/libreoffice/ppa/ubuntu bionic main
/etc/apt/sources.list.d/osquery_repo.list.save:# deb [arch=amd64] https://pkg.osquery.io/deb deb main # disabled on upgrade to focal
/etc/apt/sources.list.d/buildkite-agent.list.save:# deb https://apt.buildkite.com/buildkite-agent stable main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-libzstd-bionic.list.save:# deb http://ppa.launchpad.net/hnakamur/libzstd/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-libzstd-bionic.list.save:# deb-src http://ppa.launchpad.net/hnakamur/libzstd/ubuntu bionic main
/etc/apt/sources.list.d/pc_repo.list.distUpgrade:deb https://apt.puppet.com bionic puppet5
/etc/apt/sources.list.d/chrome-remote-desktop.list.save:deb [arch=amd64] http://dl.google.com/linux/chrome-remote-desktop/deb/ stable main 
/etc/apt/sources.list.d/pritunl.list:deb http://repo.pritunl.com/stable/apt xenial main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-libzstd-bionic.list.distUpgrade:deb http://ppa.launchpad.net/hnakamur/libzstd/ubuntu bionic main
/etc/apt/sources.list.d/hnakamur-ubuntu-libzstd-bionic.list.distUpgrade:# deb-src http://ppa.launchpad.net/hnakamur/libzstd/ubuntu bionic main
/etc/apt/sources.list.d/bazel.list:deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8
/etc/apt/sources.list.d/sbt.list:# deb http://dl.bintray.com/sbt/debian / # disabled on upgrade to focal
/etc/apt/sources.list.d/google-cloud-sdk.list.save:deb http://packages.cloud.google.com/apt cloud-sdk main
/etc/apt/sources.list.d/buildkite-agent.list.distUpgrade:deb https://apt.buildkite.com/buildkite-agent stable main
/etc/apt/sources.list.d/hnakamur-ubuntu-libarchive-bionic.list.distUpgrade:deb http://ppa.launchpad.net/hnakamur/libarchive/ubuntu bionic main
/etc/apt/sources.list.d/hnakamur-ubuntu-libarchive-bionic.list.distUpgrade:# deb-src http://ppa.launchpad.net/hnakamur/libarchive/ubuntu bionic main
/etc/apt/sources.list.d/libreoffice-ubuntu-ppa-bionic.list:# deb http://ppa.launchpad.net/libreoffice/ppa/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/libreoffice-ubuntu-ppa-bionic.list:# deb-src http://ppa.launchpad.net/libreoffice/ppa/ubuntu bionic main
/etc/apt/sources.list.d/mono-xamarin.list:deb https://download.mono-project.com/repo/ubuntu stable-focal main
/etc/apt/sources.list.d/google-cloud-sdk.list.distUpgrade:deb http://packages.cloud.google.com/apt cloud-sdk main
/etc/apt/sources.list.d/osquery_repo.list.distUpgrade:deb [arch=amd64] https://pkg.osquery.io/deb deb main
/etc/apt/sources.list.d/bluetooth-ubuntu-bluez-bionic.list.distUpgrade:deb http://ppa.launchpad.net/bluetooth/bluez/ubuntu bionic main
/etc/apt/sources.list.d/bluetooth-ubuntu-bluez-bionic.list.distUpgrade:# deb-src http://ppa.launchpad.net/bluetooth/bluez/ubuntu bionic main
/etc/apt/sources.list.d/chrome-remote-desktop.list.distUpgrade:deb [arch=amd64] http://dl.google.com/linux/chrome-remote-desktop/deb/ stable main
/etc/apt/sources.list.d/dotnet-sdk.list:# deb [arch=amd64] https://packages.microsoft.com/ubuntu/18.04/prod focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-libzstd-bionic.list:# deb http://ppa.launchpad.net/hnakamur/libzstd/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-libzstd-bionic.list:# deb-src http://ppa.launchpad.net/hnakamur/libzstd/ubuntu bionic main
/etc/apt/sources.list.d/hnakamur-ubuntu-cmake-bionic.list.save:# deb http://ppa.launchpad.net/hnakamur/cmake/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-cmake-bionic.list.save:# deb-src http://ppa.launchpad.net/hnakamur/cmake/ubuntu bionic main
/etc/apt/sources.list.d/dotnet-sdk.list.save:# deb [arch=amd64] https://packages.microsoft.com/ubuntu/18.04/prod focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/clang-format-7.list:# deb [arch=amd64] http://apt.llvm.org/bionic/ llvm-toolchain-bionic-7 main # disabled on upgrade to focal
/etc/apt/sources.list.d/clang-format-7.list.save:# deb [arch=amd64] http://apt.llvm.org/bionic/ llvm-toolchain-bionic-7 main # disabled on upgrade to focal
/etc/apt/sources.list.d/bazel.list.distUpgrade:deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8
/etc/apt/sources.list.d/pritunl.list.save:# deb http://repo.pritunl.com/stable/apt xenial main # disabled on upgrade to focal
/etc/apt/sources.list.d/pritunl.list.distUpgrade:deb http://repo.pritunl.com/stable/apt xenial main
/etc/apt/sources.list.d/hnakamur-ubuntu-cmake-bionic.list:# deb http://ppa.launchpad.net/hnakamur/cmake/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-cmake-bionic.list:# deb-src http://ppa.launchpad.net/hnakamur/cmake/ubuntu bionic main
/etc/apt/sources.list.d/docker-ce.list.save:deb https://download.docker.com/linux/ubuntu focal stable
/etc/apt/sources.list.d/bluetooth-ubuntu-bluez-bionic.list:# deb http://ppa.launchpad.net/bluetooth/bluez/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/bluetooth-ubuntu-bluez-bionic.list:# deb-src http://ppa.launchpad.net/bluetooth/bluez/ubuntu bionic main
/etc/apt/sources.list.d/osquery_repo.list:# deb [arch=amd64] https://pkg.osquery.io/deb deb main # disabled on upgrade to focal
/etc/apt/sources.list.d/puppet5.list:# deb http://apt.puppetlabs.com focal puppet5 # disabled on upgrade to focal
/etc/apt/sources.list.d/puppet5.list:# deb-src http://apt.puppetlabs.com bionic puppet5
/etc/apt/sources.list.d/dotnet-sdk.list.distUpgrade:deb [arch=amd64] https://packages.microsoft.com/ubuntu/18.04/prod bionic main
/etc/apt/sources.list.d/iovisor.list:# deb https://repo.iovisor.org/apt/bionic focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/sbt.list.distUpgrade:deb http://dl.bintray.com/sbt/debian /
/etc/apt/sources.list.d/hnakamur-ubuntu-libarchive-bionic.list:# deb http://ppa.launchpad.net/hnakamur/libarchive/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/hnakamur-ubuntu-libarchive-bionic.list:# deb-src http://ppa.launchpad.net/hnakamur/libarchive/ubuntu bionic main
/etc/apt/sources.list.d/docker-ce.list:deb https://download.docker.com/linux/ubuntu focal stable
/etc/apt/sources.list.d/google-chrome.list:deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list.d/vscode.list:# deb [arch=amd64] https://packages.microsoft.com/repos/vscode stable main # disabled on upgrade to focal
/etc/apt/sources.list.d/sbt.list.save:# deb http://dl.bintray.com/sbt/debian / # disabled on upgrade to focal
/etc/apt/sources.list.d/vscode.list.distUpgrade:deb [arch=amd64] https://packages.microsoft.com/repos/vscode stable main
/etc/apt/sources.list.d/clang-format-7.list.distUpgrade:deb [arch=amd64] http://apt.llvm.org/bionic/ llvm-toolchain-bionic-7 main
/etc/apt/sources.list.d/libreoffice-ubuntu-ppa-bionic.list.save:# deb http://ppa.launchpad.net/libreoffice/ppa/ubuntu focal main # disabled on upgrade to focal
/etc/apt/sources.list.d/libreoffice-ubuntu-ppa-bionic.list.save:# deb-src http://ppa.launchpad.net/libreoffice/ppa/ubuntu bionic main
/etc/apt/sources.list.d/chrome-remote-desktop.list:deb [arch=amd64] http://dl.google.com/linux/chrome-remote-desktop/deb/ stable main

РЕДАКТИРОВАТЬ 2 Мне удалось удалить pritunl-client-gtk , вставив exit 0 в начало сценария удаления: / var / lib / dpkg / info / pritunl-client-gtk .prerm

После этого apt --fix-broken remove / ... install , а также apt autoremove и apt переустановите libappstream4 все работает нормально и очищено.

Однако apt-get update по-прежнему не работает, как описано выше.