我安装了 Ubuntu 18.04，没有格式化，并使用与旧版本相同的用户名和密码。
这样，正如我所料，大多数软件都被删除了。
问题是，在我安装之后脉冲效应使用官方命令
sudo add-apt-repository ppa:mikhailnov/pulseeffects -y
sudo apt update
sudo apt install pulseeffects pulseaudio --install-recommends
软件无法启动。使用快捷方式时没有任何反应。
从命令启动给了我这个
(pulseeffects:32519): pulseeffects-WARNING **: 13:56:03.281: pulse_manager: Pulseaudio 11.1 does not support norewinds. Loading the sink the old way. Changing apps volume will cause cracklings
(pulseeffects:32519): pulseeffects-CRITICAL **: 13:56:03.281: pulse_manager: failed to load module-null-sink with argument: sink_name=PulseEffects_apps sink_properties=device.description="PulseEffects(apps)"device.class="sound" channels=2 rate=48000
(pulseeffects:32519): pulseeffects-WARNING **: 13:56:03.282: pulse_manager: Pulseaudio 11.1 does not support norewinds. Loading the sink the old way. Changing apps volume will cause cracklings
(pulseeffects:32519): pulseeffects-CRITICAL **: 13:56:03.282: pulse_manager: failed to load module-null-sink with argument: sink_name=PulseEffects_mic sink_properties=device.description="PulseEffects(mic)"device.class="sound" channels=2 rate=48000
[1] 32519 segmentation fault (core dumped) pulseeffects