networking - After network restart, device not ready Xubuntu 16.04, Intel 3945ABG Wireless card - Ask Ubuntu
when wifi drops, disable , re-enable wifi. sometimes, doesn't fix problem. show no networks. reset network sudo service network-manager restart
, device not ready
i end having reboot , fixes things temporarily, until next time. how fix don't have restart computer every , again?
as suggested @vbf below, ran these commands , got these results when things stopped working.
here output of ifconfig
:
enp9s0 link encap:ethernet hwaddr 00:18:8b:dd:24:32 broadcast multicast mtu:1500 metric:1 rx packets:0 errors:0 dropped:0 overruns:0 frame:0 tx packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 rx bytes:0 (0.0 b) tx bytes:0 (0.0 b) interrupt:18 lo link encap:local loopback inet addr:127.0.0.1 mask:255.0.0.0 inet6 addr: ::1/128 scope:host loopback running mtu:65536 metric:1 rx packets:10682 errors:0 dropped:0 overruns:0 frame:0 tx packets:10682 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 rx bytes:724653 (724.6 kb) tx bytes:724653 (724.6 kb)
the output of nmcli co
:
name uuid type device netgear63 7796f00a-6ffa-4154-aff1-62af90c3d8e8 802-11-wireless -- netgear63 1 979c058f-cb41-4910-bbab-37b86d76bb5e 802-11-wireless -- samsung galaxy avant 4539 b8601380-8e76-4c9c-be74-cfa7f33865be 802-11-wireless -- wired connection 1 93b93cbb-b063-30aa-8ea4-7cc61db203f6 802-3-ethernet --
the output of command nmcli networking connectivity check
was
none
and , lastly tried both nmcli con id "netgear63 1"
, nmcli con id "netgear63"
, got output:
error: connection activation failed: no suitable device found connection.
update: laptop uses intel 3945abg wireless card.
from looking around on internet, problem may related power management wifi card related these pages: http://www.intel.com/content/www/us/en/support/network-and-i-o/wireless-networking/000005875.html , wireless connection keeps dropping intel 3945abg card
to solve problem, power management card may have disabled. above forum pages solutions doesn't work version of ubuntu have (16.04).
to turn of power management of wifi, following:
run iwconfig
. see chip-set whether power management on or off. open /etc/networkmanager/conf.d/default-wifi-powersave-on.conf
, should see
[connection] wifi.powersave = 3
change 3 2, save , reboot.
run iwconfig
, should see power management:off
source: https://sites.google.com/site/easylinuxtipsproject/internet
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