When my Ubuntu 14.04 machine awakes from hibernation, sometimes the network is disable and enabling it does not make it work again. Runningsudo service network-manager restartalone does not solve the problem. But sudo ifconfig wlan0 down && sudo ifconfig wlan0 uptend to solve the problem for a wlan connection. However, it fails to start a PPP connection through 3G or GPRS unless I re-boot. Re-starting the smartphone used as a modem does not help here.How can I re-start all network modules without re-booting?More information:The machine is connected through a USB cable to the smartphone. I am using the network-manager and the nm-applet to start the connection. It's a persistent problem, in earlier versions it was already a problem. I won't enter on the reason why the network gets disabled after hibernation. I believe there's information somewhere about how to deal with this bug though. However, it was not a big issue for me. sudo lsmod | grep pppppp_deflate            12950  0 ppp_async              17413  1 crc_ccitt              12707  1 ppp_asyncsudo lsmod | grep usbusb_serial_simple      17386  2 usbserial              45141  6 usb_serial_simpleusb_storage            66545  1 uas
Restarting all the network in Ubuntu after hibernating
ubuntu;networkmanager;network interface;troubleshooting