About 3 days ago my wife did an update using software updater on her Packard Bell dot-s notebook running Lubuntu 14.04. Since then the wifi doesn't work. The applet icon has a little x and the menu show everything greyed out, although enable networking is ticked, enable wifi is not. lspci -nn | grep Network shows up the correct network controller (Intel Corporation Centrino Wirless-N 1000), ifconfig shows only eth0 and lo. The /etc/network/interfaces file looks like:
auto lo
iface lo inet loopbackWhen I add the following to the file:
auto wlan0
iface wlan0 inet dhcp
auto eth0
iface eth0 inet dhcpAll it does is make the system wait at boot time with Waiting for network configuration... after which it explains it will wait another 60 seconds then boots without wifi connection.
After booting ifconfig shows lo and wlan0 although there is no inet addr: in wlan0. Upon entering sudo ifup wlan0 it comes up with ifup: interface wlan0 already configured. I don't know how to get this to work again. I have tried various sites with no luck.
Output for ps aux | grep -i network is:
mywife 2543 0.0 0.0 4684 840 pts/9 S+ 19:44 0:00 grep --color=auto -i networkand output for dmesg | grep iwl is:
[ 16.446434] iwlwifi 0000:02:00.0: irq 43 for MSI/MSI-X
[ 16.539321] iwlwifi 0000:02:00.0: loaded firmware version 39.31.5.1 build 35138 op_mode iwldvm
[ 16.856846] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEBUG disabled
[ 16.856857] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[ 16.856865] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[ 16.856874] iwlwifi 0000:02:00.0: Detected Intel(R) Centrino(R) Wireless-N 1000 BGN, REV=0x6C
[ 16.864095] iwlwifi 0000:02:00.0: L1 Disabled - LTR Disabled
[ 16.871420] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
[ 17.104178] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[ 17.778569] iwlwifi 0000:02:00.0: RF_KILL bit toggled to enable radio.
[ 21.016195] iwlwifi 0000:02:00.0: L1 Disabled - LTR Disabled
[ 21.024372] iwlwifi 0000:02:00.0: Radio type=0x0-0x0-0x3
[ 21.061736] iwlwifi 0000:02:00.0: L1 Disabled - LTR Disabled
[ 21.069193] iwlwifi 0000:02:00.0: Radio type=0x0-0x0-0x3The output of rfkill list is:
0: phy0: Wireless LAN Soft blocked: no Hard blocked: no
1: acer-wireless: Wireless LAN Soft blocked: no Hard blocked: noThe output for the NetworkManager --no-daemon command is here
The output for the sudo iwlist wlan0 scanning is here
1 Answer
With @Sneetsher help I managed to get this working. By setting /var/lib/NetworkManager/NetworkManager.state file from:
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=trueto
NetworkingEnabled=false
WirelessEnabled=false
WWANEnabled=true
WimaxEnabled=truethen rebooting and then setting it back to the initial setting and rebooting it seems to work again.
