Às vezes (principalmente ultimamente) eu me deparo com o problema detalhado abaixo. Todos os dispositivos são contabilizados, detectados e reconhecidos pelo sistema. Consegui verificar isso usando todos os métodos em que posso pensar, incluindo pesquisar os diretórios do sistema & arquivos como /sys/kernel/debug/usb/devices , referência cruzada de ferramentas comuns como lshw , lspci , lsusb , etc. Alguma idéia do que está acontecendo e / ou por quê? Felicidades.
root@main:~# service networking startJob for networking.service failed because the control process exited with error code.
See "systemctl status networking.service" and "journalctl -xe" for details.
root@main:~# systemctl status networking.service● networking.service - Raise network interfaces
Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Sat 2017-08-12 12:18:03 AWST; 2min 48s ago
Docs: man:interfaces(5)
Process: 30803 ExecStart=/sbin/ifup -a --read-environment (code=exited, status=1/FAILURE)
Process: 30800 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] && [ -n "$(ifquery --read-environment --list --exclude=lo)" ] && udevadm settle (code=exited, status=0/SUCCESS)
Main PID: 30803 (code=exited, status=1/FAILURE)
Aug 12 12:18:03 main systemd[1]: Starting Raise network interfaces...
Aug 12 12:18:03 main ifup[30803]: Cannot find device "wlan2"
Aug 12 12:18:03 main ifup[30803]: ifup: failed to bring up wlan2
Aug 12 12:18:03 main systemd[1]: networking.service: Main process exited, code=exited, status=1/FAILURE
Aug 12 12:18:03 main systemd[1]: Failed to start Raise network interfaces.
Aug 12 12:18:03 main systemd[1]: networking.service: Unit entered failed state.
Aug 12 12:18:03 main systemd[1]: networking.service: Failed with result 'exit-code'.