我不确定是什么导致了这个错误，但以下是完整错误信息，而且此错误作为通知呈现，使得我无法使用“更新管理器”更新任何软件 - 请提供一些帮助或告诉我如何弄清楚应该怎么修复它。
Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade.
Please report this bug against the 'update-manager' package and include the following error message:
'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
这篇帖子可能解决了你的问题。总结一下：
/var/log/dist-upgrade/apt.log 日志文件。sudo apt-get remove <package> 删除它们。注意：在较新的版本中，日志位于 /var/log/apt/term.log 中。
cat: /var/log/dist-upgrade/apt.log: No such file or directory - Braden Bestdo-release-upgrade吗？现在它告诉我“请在升级之前安装所有可用的更新。” - Albertapt-get remove XXX 没有起作用，因为它显示了相同的 pkgProblemResolver 错误。然而，dpkg --purge XXX 可以卸载某些软件包，或者可能会显示其他我也需要卸载的软件包，然后才能起作用。 - Albert/var/log/apt/term.log中。 - desmond13尝试：
sudo apt-get update && sudo apt-get upgrade
然后再次运行update-manager。
update命令时会收到错误提示。 - Jay Imerman$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
gir1.2-gtk-3.0 : Depends: gir1.2-pango-1.0 (>= 1.40.5) but 1.38.1-1 is installed
Depends: libgtk-3-0 (>= 3.22.29) but 3.18.9-1ubuntu3.3 is installed
hplip : Depends: hplip-data (= 3.17.10+repack0-5) but 3.16.3+repack0-1 is installed
Depends: printer-driver-hpcups (= 3.17.10+repack0-5) but 3.16.3+repack0-1 is installed
Depends: libsane1 (>= 1.0.24) but it is not installed
libhpmud0 : Depends: libsnmp30 (>= 5.7.3+dfsg-1.8ubuntu3~dfsg) but 5.7.3+dfsg-1ubuntu4.2 is installed
onboard : Depends: onboard-common (< 1.4.1-2ubuntu1.1) but it is not installed
Depends: onboard-common (>= 1.4.1-2ubuntu1) but it is not installed
Depends: libhunspell-1.6-0 but it is not installed
Recommends: onboard-data (>= 1.4.1-2ubuntu1) but 1.2.0-0ubuntu5 is installed
python3 : Depends: python3.6 (>= 3.6.7-1~) but it is not installed
Depends: libpython3-stdlib (= 3.6.7-1~18.04) but 3.5.1-3 is installed
python3-apt : Depends: libapt-inst2.0 (>= 1.6.5~) but 1.2.29ubuntu0.1 is installed
Depends: libapt-pkg5.0 (>= 1.6.5~) but 1.2.29ubuntu0.1 is installed
python3-cryptography : Depends: python3-asn1crypto (>= 0.21.0~) but it is not installed
Depends: python3-idna (>= 2.1) but 2.0-3 is installed
python3-gdbm : Depends: libgdbm5 (>= 1.14) but it is not installed
python3-pil : Depends: libwebp6 (>= 0.5.1) but it is not installed
Depends: libwebpdemux2 (>= 0.5.1) but it is not installed
Depends: libwebpmux3 (>= 0.6.1-2) but it is not installed
Recommends: python3-olefile but it is not installed
python3-systemd : Depends: libsystemd0 (>= 233) but 229-4ubuntu21.16 is installed
python3-uno : Depends: libreoffice-core (= 1:6.0.7-0ubuntu0.18.04.2) but 1:5.1.6~rc2-0ubuntu1~xenial6 is installed
Depends: python3.6 but it is not installed
Depends: uno-libs3 (>= 5.3.0~alpha) but 5.1.6~rc2-0ubuntu1~xenial6 is installed
python3.6-dev : Depends: python3.6 (= 3.6.7-1~18.04) but it is not installed
totem-plugins : Depends: libgtk-3-0 (>= 3.19.4) but 3.18.9-1ubuntu3.3 is installed
Depends: liblirc-client0 but it is not installed
Depends: libtotem0 (>= 3.26.0-0ubuntu6.2) but 3.18.1-1ubuntu4 is installed
Depends: totem (= 3.26.0-0ubuntu6.2) but 3.18.1-1ubuntu4 is installed
Depends: gir1.2-totem-1.0 (= 3.26.0-0ubuntu6.2) but 3.18.1-1ubuntu4 is installed
virtualbox : Depends: python3.6 but it is not installed
Depends: libgsoap-2.8.60 but it is not installed
Depends: libpng16-16 (>= 1.6.2-1) but it is not installed
Recommends: libqt5core5a (>= 5.9.0~beta) but 5.5.1+dfsg-16ubuntu7.5 is installed
virtualbox-qt : Depends: libqt5core5a (>= 5.9.0~beta) but 5.5.1+dfsg-16ubuntu7.5 is installed
Depends: libqt5widgets5 (>= 5.7.0) but 5.5.1+dfsg-16ubuntu7.5 is installed
Depends: libqt5x11extras5 (>= 5.6.0) but 5.5.1-3build1 is installed
E: Unmet dependencies. Try using -f.
sudo apt-get remove命令来移除软件包，但是这个方法也没有起作用。dpkg -l | grep ^iU | awk '{print $2}' | xargs sudo dpkg --purge
sudo apt install -f
dist-upgrade后面加上-f。但是在我的情况下，这会导致pkgProblemResolver错误。另外，使用相同的pkgProblemResolver错误时，apt-get remove也无法正常工作。不过，dpkg --purge部分地起作用了。有时它会列出其他包作为依赖项，我只需以同样的方式将其删除即可。最后，apt-get dist-upgrade -f运行良好。 - Albertapt --fix-broken install - 这修复了所有已安装的组件并恢复了仓库列表。希望这对其他人有所帮助！ - Jay ImermanThe following packages have unmet dependencies.
libglib2.0-dev : Depends: libglib2.0-0 (= 2.64.2-1~fakesync1) but 2.64.3-1~ubuntu20.04.1 is to be installed
Depends: libglib2.0-bin (= 2.64.2-1~fakesync1)
apt update && apt dist-upgrade，然后我就能安装那个库了。Upgrade: package1:arch (old, new), package2:arch (old, new),
...
Install:
speech-dispatcher-espeak-ng:amd64
fdisk:amd64
libgoa-backend-1.0-1:amd64
...
Upgrade:
speech-dispatcher-audio-plugins:amd64
ubuntu-settings:amd64
libmpc3:amd64
...
Remove:
qtdeclarative5-ubuntu-ui-toolkit-plugin:amd64-
python-sip:amd64-
gstreamer1.0-plugins-ugly-amr:amd64-
...
package:arch 行。xargs -a packages.txt sudo apt install
sudo apt install -f和sudo apt dist-upgrade来完成任何被忽略的内容。apt-mark auto来将这些软件包标记为自动安装（升级选择了它们，而不是你）。xargs -a installed.txt sudo apt-mark auto
\([^)]+\),应该匹配（在该字符串前后添加空格），然后替换为\n。 - geerlingguysudo apt-get update # Make sure your package list is up to date
sudo apt-get autoremove # Removes "no longer required" packages