Wireless networking not working after resume in Ubuntu 14.04

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[Update]:
The same problem exists in Kubuntu and is solved in the same manner.
[Solved]:
By applying the following command nmcli nm I got the following:

Before suspend

RUNNING STATE WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running connected enabled enabled enabled enabled

as can you see the state is connected and the rest are enabled and running

After suspend

RUNNING STATE WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running asleep enabled enabled enabled disabled

as can you see the state is asleep meaning our dear network manager is still napping, so to solve use the fallowing command line:
sudo nmcli nm sleep false
this tells the network manager to wake the hell up. to make this permenant :
create a script in /etc/pm/sleep.d containg the following (and don't forget to mark the script as executable):

#!/bin/sh case "${1}" in resume|thaw) nmcli nm sleep...
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How about reading the 'Code' tags part of my post also, then edit your above post to use them?

I was anticipating the modinfo error, so no surprises. It just confirms that your kernel is broken - badly.

Now please use the links that the apt-get command gave you -
http://us.archive.ubuntu.com/ubuntu/...2.57_amd64.deb
and
http://us.archive.ubuntu.com/ubuntu/...2.38_amd64.deb

..to download these two .deb packages on a computer with internet access.

Copy these two packages back to your Ubuntu system, in a new folder (say, "kernel") on your Desktop.
Then open a terminal, and run this command to install them -

Code:

sudo dpkg -i Desktop/kernel/*(Make sure there are only those two .deb packages in the "kernel" folder on you Desktop.)

Then reboot, try to connect again, and let us know the...

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It's time for another fix, this time for wired / wireless network not working after resume from suspend. In Ubuntu, sometimes when resuming from sleep, the wired network doesn't work and I keep getting "disconnected" notifications. I've read that some users are having similar issue with the wireless connection but for me, it's always the Ethernet connection.


So here's a fix that has worked for me, under Ubuntu 12.10 (but it probably works with other Ubuntu versions as well as other Linux distributions).

Get the wired / wireless network to work after resume from suspend in Ubuntu


1.To fix the Ethernet / WiFi network not working after resume from suspend

, firstly, you must

find out the kernel module used by your network hardware

. The

article

where I've found this fix suggests using the following command:

sudo lsmod

and then trying to figure out which module is the one used by your network interface. But that's not so easy to do,...

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I'm currently using Ubuntu Lucid on my HP Compaq CQ56 laptop. It is really Linux friendly laptop, but like every other configuration it needs some tweaking to really shine. In this post I will show you how to fix problem with ethernet network not working after resume from sleep. This procedure works for ethernet or wifi network devices, or any other hardware device that makes problems after resume from sleep.

First thing is to find out the kernel module that makes your network hardware alive (and dead after resume from sleep). It takes some knowledge to determine this name, usually it starts with "r" if you have Realtek NIC or "rt" for Ralink wifi hardware but it could be anything else. It might help to look into your hardware specification. To see the list of loaded kernel modules use this command:

The result of that command would be the list like this one:

Problem on my laptop is with Realtek 8169 ethernet device whose network connection is lost after...

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If your laptop is not connecting to wireless network after sleep, suspend – this is how you solve it in Ubuntu.

There is an ongoing problem faced my many users in Ubuntu. If your Ubuntu laptop is connected to Wi-Fi and it goes to sleep mode and if you wake your laptop up, then you can see the network manager is unable to connect to the wireless network. The wireless network is still preset and signal is also good but if you open up the network manager, you will see the wireless network status is shown as “Out Of Range” and Connect/Disconnect button is disabled.

Like myself, this issue is faced by many users (see forums links at the end of this article) in Ubuntu 14.04, 14.10, 15.04, 15.10 and surprisingly it is still present in latest Ubuntu 16.04 Xenial Xerus as well.

This is indeed a bug [ bug#1439771 , bug#1270257 ] and it has been reported multiple times. And one of them is still open and hopefully would be fixed in future releases. The main difficulty is...

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Hi guys,

I'm posting here as having troubles with the wifi after suspend.

I recently bought a new pcie wifi card (TP-LINK TL-WN881N), and it all works great. Unfortunately, it seems things turn bad when I put my computer to sleep, as the wifi doesn't work properly after waking up.

In face, the problem is weird. It does connect to the wifi network, connection is showed in nm-applet, connection seems alright in ifconfig, routes are fine, but it seems the drivers gets in a buggy mode where I cannot even ping (or reach in anyway) my gateway or any other location.

I tried different fixes, like the one here https://askubuntu.com/questions/761180/wifi-doesnt-work-after-suspend-after-16-04-upgrade or here https://askubuntu.com/questions/452826/wireless-networking-not-working-after-resume-in-ubuntu-14-04 and none of them worked.
The weirdest thing is, if I try to manually restart the network-manager service, things don't get solved and instead I even get...

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After installing Ubunutu on my new Xiaomi Book Air 12 I hit a new bug in network-manager in ubuntu which cause the fail off wifi connection after resume from suspend because the network-manager still sleep :)

It’s a long stand bug affected many brands in Linux to have a workaround just follow these simple steps.

1- Copy and paste in terminal:

sudo gedit /etc/systemd/system/wifi-resume.service

2- Copy this code and paste it in the file you opened:

#/etc/systemd/system/wifi-resume.service
#sudo systemctl enable wifi-resume.service
[Unit]
Description=Restart networkmanager at resume
After=suspend.target
After=hibernate.target
After=hybrid-sleep.target[Service]
Type=oneshot
ExecStart=wpa_cli resume
ExecStart=/bin/systemctl restart NetworkManager.service[Install]
WantedBy=suspend.target
WantedBy=hibernate.target
WantedBy=hybrid-sleep.target

3-...

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Is there a DHCP server at the other end of the Ethernet cable that will assign an IP address to the Ethernet interface? If there isn't a DHCP server at the other end, you can assign an IP address, subnet mask and gateway address with the following commands presuming that the gateway address, i.e., the router IP address, should be 192.168.1.1 and that an appropriate IP address might be 192.168.1.33

sudo ifconfig eth0 192.168.1.33 netmask 255.255.255.0 sudo route add default gw 192.168.1.1 eth0

However, if you control the router or whatever device could be a DHCP server at the other end, which could automatically assign an IP address to your Ubuntu system for its Ethernet interface, check its configuration for the Ethernet interface, since it might have a different IP address that should be used for the gateway address and the wired subnet may be different than the wireless one. If it can provide DHCP service for the wired interface, you might want to enable DHCP for the wired...

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Connecting a Ubuntu laptop to a visible wireless network is easy enough, but how do you connect to it when the SSID isn’t broadcast? To connect to an invisible wireless network, you’ll need to set up the connection settings manually. You’ll also need to set up the connection manually if Ubuntu, for whatever reason, cannot identify the encryption type.

To set up a connection manually, first click on the wireless menu in the upper right-hand corner of your screen. Then when the wireless menu opens, click on the “Connect to Hidden Wireless Network” option.

This will bring up the dialog box for connecting to a hidden wireless network.

From the Connection drop-down menu, make sure New is selected. (After you’ve added multiple connections to your computer, you can select some of the wireless networks to which you’ve previously connected here.) In the Network Name field, type the SSID of the network you want to use. Make sure that you type the SSID accurately....

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I am brand new to the Linux community, and I have installed Ubuntu 14.04. However, I am having some issues with Wifi. Ubuntu does not recognize Wifi at all, and I think it might be a communication problem between the hardware and Ubuntu. I am using a brand new Lenovo Y700 with an intel Core i7 processor.

When I search in terminal for network hardware it recognizes the Intel Wireless 8260 wireless card, but says that it is unclaimed.

lshw -class network *-network UNCLAIMED description: Network controller product: Wireless 8260 vendor: Intel Corporation physical id: 0 bus info: pci@0000:08:00.0 version: 3a width: 64 bits clock: 33MHz capabilities: pm msi pciexpress cap_list configuration: latency=0 resources: memory:94100000-94101fff *-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:09:00.0 logical name: eth0 version:...
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Yah, the issue, IIRC, is that many wifi adapters use NDIS, which is an interface specification. It apparently goes WAY back to Win 3.1 (!)...and having seen that, mmm. I remember, vaguely, trying to get network cards to work way back when. But since it's a Windows thing, Linux doesn't support it out of the box.

Go to the web page I linked to...since you can, now. Scroll down, and you'll see a table of manufacturers and interfaces. Click on your card's manufacturer, and you should get a list of all its cards/adapters. With any luck, you'll see comments/advice on how to set it up. And even just reviewing the comments (and the info throughout those pages) is informative.

If you do need to install the NDIS wrapper, it's available in the software center...just search for...

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Table of Contents

Release Notes for Cisco Identity Services Engine, Release 2.2

Contents

Introduction

New Features in Cisco ISE, Release 2.2

Ability to Detect Anomalous Behavior of Endpoints

ACS to ISE migration Tool Enhancements

Auth VLAN DHCP and DNS Service Enhancements

Context Visibility Enhancements

Cryptobinding TLV Support

Custom User Attributes

Dial-in Attribute Support

Dictionary Check for Internal User and Admin User Password

Endpoint Identity Groups in Posture Policy

Guest Enhancements

JSON Support for APIs

Network Conditions

Network Device Group Hierarchies

OTP Token Caching

Posture Enhancements

pxGrid Enhancements

RADIUS DTLS

RADIUS IPsec Security for Cisco ISE-NAD Communication

RADIUS Shared Secret Minimum Length

Serviceability Enhancements

Session Trace Test Cases

Smart Call Home...

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The AnyConnect client relies on the Windows Cryptographic Service Provider (CSP) of the certificate for hashing and signing of data required during the IKEv2 authentication phase of the IPsec/IKEv2 VPN connection. If the CSP does not support SHA 2 algorithms, and the ASA is configured for the pseudo-random function (PRF) SHA256, SHA384, or SHA512, and the connection profile (tunnel-group) is configured for certificate or certificate and AAA authentication, certificate authentication fails. The user receives the message Certificate Validation Failure.

This failure occurs for Windows only, for certificates that belong to CSPs that do not support SHA 2-type algorithms. Other supported OSs do not experience this problem.

To avoid this problem you can configure the PRF in the IKEv2 policy on the ASA to md5 or sha (SHA 1). Alternatively, you can modify the certificate CSP value to native CSPs that work such as Microsoft Enhanced RSA and AES...

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