昨天，我在注销并登录/重启后更新了我的系统（更新了一些 PAM 文件），但无法连接到 WIFI 或互联网。我的笔记本电脑上没有以太网端口，因此无法检查。我的系统是双启动 win11/ubuntu 21.1，带有 kde 等离子桌面。
syslog 的输出如下。
NetworkManager[594]: <error> [1641487978.9687] bus-manager: fatal failure to acquire D-Bus service "org.freedesktop.NetworkManager: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Connection ":1.10" is not allowed to own the service "org.freedesktop.NetworkManager" due to security policies in the configuration file
Jan 6 22:22:58 ubuntu2004 thermald[619]: 22 CPUID levels; family:model:stepping 0x6:8e:a (6:142:10)
Jan 6 22:22:58 ubuntu2004 systemd[1]: NetworkManager.service: Main process exited, code=exited, status=1/FAILURE
Jan 6 22:22:58 ubuntu2004 systemd[1]: NetworkManager.service: Failed with result 'exit-code'.
Jan 6 22:22:58 ubuntu2004 systemd[1]: Failed to start Network Manager.
Jan 6 22:22:58 ubuntu2004 systemd[1]: Dependency failed for Network Manager Wait Online.
Jan 6 22:22:58 ubuntu2004 systemd[1]: NetworkManager-wait-online.service: Job NetworkManager-wait-online.service/start failed with result 'dependency'.
Jan 6 22:22:59 ubuntu2004 systemd[1]: kerneloops.service: Found left-over process 735 (kerneloops) in control group while starting unit. Ignoring.
Jan 6 22:22:59 ubuntu2004 systemd[1]: This usually indicates unclean termination of a previous run, or service implementation deficiencies.
Jan 6 22:22:59 ubuntu2004 NetworkManager[804]: <error> [1641487979.1058] bus-manager: fatal failure to acquire D-Bus service "org.freedesktop.NetworkManager: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Connection ":1.18" is not allowed to own the service "org.freedesktop.NetworkManager" due to security policies in the configuration file
Jan 6 22:22:59 ubuntu2004 systemd[1]: NetworkManager.service: Main process exited, code=exited, status=1/FAILURE
Jan 6 22:22:59 ubuntu2004 systemd[1]: NetworkManager.service: Failed with result 'exit-code'.
Jan 6 22:22:59 ubuntu2004 systemd[1]: Failed to start Network Manager.
我不知道如何解决这个问题。我尝试重新启动 NetworkManager，但没有帮助。
寻求建议。
更新：
安装软件包后，network-manager_1.32.12-0ubuntu1_amd64.deb我可以通过 USB 网络共享连接到互联网。任务栏中出现网络图标，但没有显示 WIFI 网络，因此无法连接到 WIFI。