重新启动我的 18.04 服务器后，我发现启动时间非常慢（需要 5-15 分钟才能登录）并且多次出现“systemd”故障。
以下是我所看到的错误：
systemd[1]: Failed to get initial list of names: Connection timed out
systemd[1]: Failed to to set up API bus: Connection timed out
systemd[1]: Error occured during D-Bus APIs: Connection timed out
systemd[1]: Failed to start Login Service: Connection timed out
供参考
$ ls -al /etc/resolv.conf
lrwxrwxrwx 1 root root 39 Sep 6 14:06 /etc/resolv.conf -> ../run/systemd/resolve/stub-resolv.conf
$ cat /etc/resolv.conf
nameserver 127.0.0.53
options edns0
search blacklab.ddns.net
$ cat /etc/netplan/*.yaml
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
auto enp8s0
iface enp8s0 inet dhcp
有什么想法可以修复/排除此问题吗？谢谢
更新：
还注意到速度很慢sudo apt-get update/upgrade并出现如下错误：
Err:4 https://packages.cloud.google.com/apt coral-edgetpu-stable/main i386 Packages
Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 2607:f8b0:4007:800::200e 443]
E: Failed to fetch https://packages.cloud.google.com/apt/dists/coral-edgetpu-stable/main/binary-i386/Packages Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 2607:f8b0:4007:800::200e 443]
E: Some index files failed to download. They have been ignored, or old ones used instead.