I also have this problem on several machines running Ubuntu 16.04. After resume from suspend no IPv4 address is assigned to the network interfaces (both wired and wireless). Seems to be not related to hardware or driver but to NetworkManager.
Maybe this (known) problem is corrected in version 1.2.6 (see change log). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1130571 Title: wired network disabled after resume (AR9485) Status in network-manager package in Ubuntu: Confirmed Bug description: I have both a wired network and wireless. On first boot both are functional, but on resuming from sleep the wired controller is disabled (wireless still works). This behaviour started with the latest kernel installed yesterday. From syslog on resume Feb 20 08:48:31 mark-PBL21 NetworkManager[1109]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889) Feb 20 08:48:31 mark-PBL21 NetworkManager[1109]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889) Feb 20 08:48:31 mark-PBL21 NetworkManager[1109]: <info> (eth4): now managed Feb 20 08:48:31 mark-PBL21 NetworkManager[1109]: <info> (eth4): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] Feb 20 08:48:31 mark-PBL21 NetworkManager[1109]: <info> (eth4): bringing up device. Feb 20 08:48:31 mark-PBL21 NetworkManager[1109]: <info> (eth4): deactivating device (reason 'managed') [2] uname -a Linux mark-PBL21 3.5.0-24-generic #37-Ubuntu SMP Thu Feb 7 01:50:30 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux $ sudo lshw -C network [sudo] password for mthornton: *-network description: Wireless interface product: AR9485 Wireless Network Adapter vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan3 version: 01 serial: dc:85:de:03:c8:ce width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=3.5.0-24-generic firmware=N/A ip=192.168.41.214 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn resources: irq:17 memory:f7900000-f797ffff memory:f7980000-f798ffff *-network DISABLED description: Ethernet interface product: AR8161 Gigabit Ethernet vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:04:00.0 logical name: eth4 version: 10 serial: 10:bf:48:9f:e9:c6 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical configuration: broadcast=yes driver=alx latency=0 multicast=yes resources: irq:19 memory:f7800000-f783ffff ioport:d000(size=128) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1130571/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
