我最近刚刚升级到Ubuntu 18.04在戴尔 Vostro 15笔记本电脑。我遇到了一些与 pulseaudio 相关的问题，所以我按照显示的方式运行了这些命令这里
sudo apt-get purge pulseaudio
sudo apt-get clean && sudo apt-get autoremove
执行这些命令后，我运行了sudo apt-get install pulseaudio，甚至尝试运行，sudo apt install pulseaudio但出现了这些错误：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package pulseaudio 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 'pulseaudio' has no installation candidate
有什么想法可以解决此问题吗？
答案1
长远来看
software-properties-gtk
转到 Tab 更新并激活 bionic-updates 和 bionic-security。
sudo apt update && sudo apt install pulseaudio