I have a standard ubuntu 16.04 installation on a Lenovo ideapad 100. On irregular intervals the laptop looses connection to the wifi router.
$ ip a show wlp3s0
shows only
wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
but i cannot restart it with either of these commands, the interface remains down.
# ifconfig wlp3s0 up
# ip link set wlp3s0 up
# service network-manager restart
This happens in different wifi networks.
The wifi icon in the top right corner sometimes shows, that it is searching for a connection, but it is unable to connect.
Is this a problem of the driver, or is there also another chance to get it manually up again?
Update
$ lspci -knn | grep Net -A2
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Lenovo RTL8723BE PCIe Wireless Network Adapter [17aa:b728]
Kernel driver in use: rtl8723be
Kernel modules: rtl8723be
lspci -knn | grep Net -A2terminal command. – Pilot6 Jan 23 '17 at 12:23