WiFi 以前在 4.19.1 上工作正常，但升级内核后，过了一段时间就停止工作了。我尝试了一些不起作用的方法：
sudo service NetworkManager restart
sudo service network-manager restart
sudo service networking restart
这些都不管用。我确实有一些上次停止时的日志，但我无法将它们变成可操作的项目。有人有什么建议吗？
-- Logs begin at Mon 2018-12-03 19:51:48 EST. --
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.2483] device (wlo1): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.2497] device (wlo1): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.2501] device (wlo1): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.2506] manager: NetworkManager state is now CONNECTED_LOCAL
Jan 02 21:20:01 envy dhclient[2054]: bound to 192.168.86.41 -- renewal in 33503 seconds.
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.2625] manager: NetworkManager state is now CONNECTED_SITE
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.2627] policy: set 'owlbear' (wlo1) as default for IPv4 routing and DNS
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.2635] device (wlo1): Activation: successful, device activated.
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.2647] manager: startup complete
Jan 02 21:20:01 envy NetworkManager[1296]: <info> [1546482001.3803] manager: NetworkManager state is now CONNECTED_GLOBAL
---> GOES DOWN HERE <-----------
Jan 02 22:10:14 envy NetworkManager[1296]: <warn> [1546485014.2700] sup-iface[0x56522e92b8e0,wlo1]: connection disconnected (reason -3)
Jan 02 22:10:14 envy NetworkManager[1296]: <info> [1546485014.2842] device (wlo1): supplicant interface state: completed -> disabled
Jan 02 22:10:14 envy dhclient[2054]: receive_packet failed on wlo1: Network is down