升级后我无法启动 NetworkManager。
我最初尝试运行：sudo service network-manager restart看看是否会再次启动它，但出现以下错误：
Job for NetworkManager.service failed because the control process exited with error code.
See "systemctl status NetworkManager.service" and "journalctl -xe" for details.
所以我检查了systemctl并且jounalctl。 systemctl 返回以下内容：
NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Sun 2022-06-05 12:25:53 CDT; 1min 7s ago
Docs: man:NetworkManager(8)
Process: 4097 ExecStart=/usr/sbin/NetworkManager --no-daemon (code=exited, status=1/FAILURE)
Main PID: 4097 (code=exited, status=1/FAILURE)
Jun 05 12:25:53 joule systemd[1]: NetworkManager.service: Scheduled restart job, restart counter is at 5.
Jun 05 12:25:53 joule systemd[1]: Stopped Network Manager.
Jun 05 12:25:53 joule systemd[1]: NetworkManager.service: Start request repeated too quickly.
Jun 05 12:25:53 joule systemd[1]: NetworkManager.service: Failed with result 'exit-code'.
Jun 05 12:25:53 joule systemd[1]: Failed to start Network Manager.
journalctl 给了我以下内容：
Jun 05 12:25:53 joule systemd[1]: Failed to start Network Manager.
-- Subject: A start job for unit NetworkManager.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit NetworkManager.service has finished with a failure.
--
-- The job identifier is 3727 and the job result is failed.
Jun 05 12:25:53 joule systemd[1]: NetworkManager.service: Scheduled restart job, restart counter is at 5.
-- Subject: Automatic restarting of a unit has been scheduled
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Automatic restarting of the unit NetworkManager.service has been scheduled, as the result for
-- the configured Restart= setting for the unit.
Jun 05 12:25:53 joule systemd[1]: Stopped Network Manager.
-- Subject: A stop job for unit NetworkManager.service has finished
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A stop job for unit NetworkManager.service has finished.
--
-- The job identifier is 3808 and the job result is done.
Jun 05 12:25:53 joule systemd[1]: NetworkManager.service: Start request repeated too quickly.
Jun 05 12:25:53 joule systemd[1]: NetworkManager.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit NetworkManager.service has entered the 'failed' state with result 'exit-code'.
Jun 05 12:25:53 joule systemd[1]: Failed to start Network Manager.
-- Subject: A start job for unit NetworkManager.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit NetworkManager.service has finished with a failure.
--
-- The job identifier is 3808 and the job result is failed.
Jun 05 12:25:55 joule /usr/lib/gdm3/gdm-x-session[2021]: (EE) client bug: timer event6 debounce: scheduled expiry is in the past (-10ms), your system is too slow
Jun 05 12:25:55 joule /usr/lib/gdm3/gdm-x-session[2021]: (EE) client bug: timer event6 debounce short: scheduled expiry is in the past (-24ms), your system is too slow
Jun 05 12:26:19 joule /usr/lib/gdm3/gdm-x-session[2021]: (EE) client bug: timer event6 debounce: scheduled expiry is in the past (-1ms), your system is too slow
Jun 05 12:26:19 joule /usr/lib/gdm3/gdm-x-session[2021]: (EE) client bug: timer event6 debounce short: scheduled expiry is in the past (-14ms), your system is too slow
Jun 05 12:27:00 joule /usr/lib/gdm3/gdm-x-session[2021]: (EE) client bug: timer event6 debounce short: scheduled expiry is in the past (-2ms), your system is too slow
Jun 05 12:27:05 joule /usr/lib/gdm3/gdm-x-session[2021]: (EE) client bug: timer event6 debounce short: scheduled expiry is in the past (-10ms), your system is too slow
Jun 05 12:27:15 joule systemd[1]: Starting Message of the Day...
-- Subject: A start job for unit motd-news.service has begun execution
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit motd-news.service has begun execution.
--
-- The job identifier is 3889.
Jun 05 12:27:15 joule systemd[1]: motd-news.service: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit motd-news.service has successfully entered the 'dead' state.
Jun 05 12:27:15 joule systemd[1]: Finished Message of the Day.
-- Subject: A start job for unit motd-news.service has finished successfully
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- A start job for unit motd-news.service has finished successfully.
--
-- The job identifier is 3889.
Jun 05 12:28:20 joule /usr/lib/gdm3/gdm-x-session[2021]: (EE) client bug: timer event6 debounce short: scheduled expiry is in the past (-10ms), your system is too slow
我的一个线索是我的以太网接口被命名，enp0s31f6因此如果我运行sudo dhclient enp0s31f6我可以重新连接到互联网。但是，我想使用这台机器作为服务器，所以这不是一个超级可持续的选择。
我尝试编辑/etc/network/interfaces并添加以下内容，但似乎没有帮助。
auto enp0s31f6
iface enp0s31f6 inet dhcp
我很困惑，很想知道人们接下来会尝试什么？
元数据：
> dhclient --version
isc-dhclient-4.4.1
> hostnamectl
...
Boot ID: 0789175e8bad4cb58f441217f4d1135d
Operating System: Ubuntu 20.04.4 LTS
Kernel: Linux 5.4.0-113-generic
Architecture: x86-64