最近，我将我的 ubuntu 16.04 服务器升级到 18.04
但升级后，我的（Cisco anyconnect，pptp）vpn 服务器无法访问互联网......
谁能帮我？
Gnome 网络管理器在将 ubuntu 升级到 16.04 版本后无法导入任何 openvpn 配置文件（.ovpn）；
当我尝试导入 openvpn 配置文件时收到以下错误消息：
The file 'file-x.ovpn' could not be read or does not contain recognized VPN connection information Error: the plugin does not support import capability
我在 vlc 上播放 dvbt 电视频道没有任何问题
但是无线电频道没有声音
我确实从终端运行 vlc 并收到以下错误消息：
[h264 @ 0x7f04000f3f80] mmco: unref short failure
[h264 @ 0x7f04000f3f80] mmco: unref short failure
[h264 @ 0x7f04000f3f80] mmco: unref short failure
[00007f0404158938] ts demux: MPEG-4 descriptor not found for pid 0x3f3 type 0x11
[00007f0404158938] ts demux: MPEG-4 descriptor not found for pid 0x623 type 0x11
[00007f0404168738] packetizer_mpeg4audio packetizer: AAC channels: 1 samplerate: 24000
[00007f0404158938] ts demux error: libdvbpsi error (PSI decoder): TS discontinuity (received 8, expected 11) for PID 18
[00007f0404158938] ts demux error: libdvbpsi error (PSI decoder): TS discontinuity (received 9, expected 12) for PID 18
[00007f0404158938] ts demux error: libdvbpsi error (PSI decoder): TS discontinuity (received 15, expected 7) for PID 18
...
[00007f0404158938] ts demux error: libdvbpsi error (misc PSI): Bad CRC_32 table 0x50 !!!
请帮我
谢谢