Comment 18 for bug 1666432

I am also having the same issue on my Thinkpad E460 under Ubuntu 17.10. It started a couple of week ago and got really annoying. Sometimes the connection is just gone for a few seconds up to 2 or 3 minutes and sometimes it seems turning the WiFi module off and on again helps. The same problem occurs via Ethernet too, but less frequently.

sudo lshw -class network
  *-network
       description: Wireless interface
       product: Dual Band Wireless-AC 3165 Plus Bluetooth
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: wlp1s0
       version: 79
       serial: e0:94:67:45:be:3d
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.13.0-37-generic firmware=29.610311.0 ip=192.168.0.25 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:130 memory:f1200000-f1201fff
  *-network
       description: Ethernet interface
       product: Ethernet Connection I219-V
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: enp0s31f6
       version: 21
       serial: 50:7b:9d:78:29:4b
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.13-4 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:129 memory:f1300000-f131ffff