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Deactivated wifi drivers, now they wont activate again?

- by UbuntuFan

I have ubuntu 13.04. In the software and update menu, under additional drivers, Were it says "Broadcom Corporation; BCM4312 802.11b/gLP.PHY" the box labbeled "do not use it ticked" and when i try tick the one that says "Using Broadcom 802.11 Linux STA Wireless drivers....." it wont let me apply changes, it starts doing it then stops and re-ticks the do not use box. Because of this I can not use the wiress driver. Is there another way i can fix this. Or maby restore ubuntu to previous date. I accidentally ticked the do not use box this morning and now can't undo it. I have restarted several times to try apply changes and still no luck

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Removing a module when I add a new better one?

- by yinon

I'm using this guide to install my TL-WN822N (Wireless/Wifi). I need to add 8192cu at the end of /etc/modules, but I see another module there (Copy-Paste file): # /etc/modules: kernel modules to load at boot time. # # This file contains the names of kernel modules that should be loaded # at boot time, one per line. Lines beginning with "#" are ignored. # Parameters can be specified after the module name. lp 8192cuvhba vhba Should I remove it or is that unnecessary? Thanks for any help!

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Samsung NC10 Broadcom difficulties

- by simonp

I am new to Ubuntu/Linux and am stuck already! Any help much appreciated. I have managed to install Ubuntu Maverick 10.10 (from a USB flash drive) on my NC10 which also has Windows 7 on the partitioned drive. But the wireless internet is not working. I have identified the hardware as a Broadcom BCM4313. I have also managed to find that the correct driver is installed (Modaliases for Broadcom 802.11 Linux STA driver). I have followed advice from elsewhere and there does not seem to be any competition from other drivers. I am now stuck and do not have any other internet access on this netbook. Any ideas?

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How do I do a B43 Legacy install on Ubuntu 11.10?

- by Gozzy

I recently installed ubuntu onto an extra hard drive and everything booted correctly. However, my Linksys wireless card is not working. I went though all the forums and walk throughs and I know that I need to install the b43 legacy firmware to get the card to work. When I try to install the files, I keep getting the message in Terminal saying "No such file or directory" for every file i need to run. It's Ubuntu 11.10 on a dell optiplex gx280. Also, the "pool" file that is supposed to be on the file system is not there

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Need instructions on how to create wpa_supplicant.conf and add fast_reauth=0 to it

- by nutty about natty

Like many other natty users on a university/academic network, I'm experiencing annoying frequent disconnects/hangs/delays. See, for instance here. I would like to learn how to add fast_reauth=0 to the wpa_supplicant.conf file. This file, it seems, does not exit by default, and needs to be manually created first: README You will need to make a configuration file, e.g. /etc/wpa_supplicant.conf, with network configuration for the networks you are going to use. Further, I installed wpa_gui which probably needs to be launched with parameters, else it's pretty blank... What I'm hoping for is this: That creating a wpa_supplicant.conf file with fast_reauth=0 in it, saving it to the relevant path, will work and make my uni wireless (more or even completely) stable. I read mixed reviews about wicd (as an alternative to the network manager). Also note that on my basic wlan at home (with bog-standard wpa encryption) the connection is stable. Thanks!

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Ubuntu and WiFi Network

- by Anonymous

I have been trying to figure out this problem. I am currently dual-booting Ubuntu with my Windows machine. My Ubuntu would connect to my wireless router but it cannot access any web pages nor ping any hosts. Wired connection works just fine. My Windows OS in the same machine (with the exact same network configuration as my Ubuntu machine) connects and works fine. I don't know why Ubuntu cannot access the Internet. Any ideas?

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WiFi USB adapter showing the Network ..... but no connection in effect

- by Idrees

I have Pentium 4 system 3 GHz, 1 GB RAM ..... (no built-in WiFi) I installed Ubuntu 12.10 on my PC, works fine. It picked all the drivers for audio, video itself. I plugged TP-Link 54Mbps High Gain Wireless USB Adapter (TL-WN422G) ..... (link for the device: http://www.tp-link.com/en/products/details/?model=TL-WN422G) Now what happens is that the WiFi network is detected and shown in the "Network Connections", and it is also connected to it but when I open Firefox it is as if there no internet connection at all.

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Samsung RV520 with 12.04 freezes while having WiFi and brightness control issues

- by daveu1

I have a new Samsung RV520 and have just installed Precise Pangolin 12.04 LTS. I am having serious problems now with the wifi constantly disconnecting. This then causes the brightness control to appear on the screen. The screen starts flickering and then freezes the whole machine. Indeed the brightness control doesn't work at all. I am using a Intel Centrino N wireless card. Please can anyone provide any guidance as to how to resolve these issue on this machine. Many thanks for your help.

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Laptop wakes while lid is closed and overheats

- by user56601

I'm running 12.04 on a toshiba L305D with athlon x2 (Already suspect this has something to do with it). My laptop will wake from suspend, presumably from wireless scanning. This is a serious bug as sleeping laptops are often inside bags, so the cooling system is effectively disabled. I can no longer seriously use Ubuntu when I have to worry about hardware damage every time I close the lid. There is shockingly lack of information about anything close to this. So many control panels have been removed or dumbed down, and everyone seems to want this behavior instead of the opposite, for servers or torrents of whatever. Well, most laptop users will 99% be likely to regularly put their laptop in a backpack or briefcase or other bag. Does anyone know how to fix this?

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How to run just one application over ethernet while others on wifi

- by db42

I normally connect my laptop via wifi. However, I would like to use synergy to share my workplace desktop machine with my laptop. But the problem is that my desktop machine doesn't have wireless support. So, I have no other options except using ethernet to connect them. My first question is - Is it possible to use ethernet for synergy and keep using wifi for all other application. If the answer is yes, can somebody please guide me how to achieve this. Thanks,

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BCM4313 partially working on Toshiba Satellite R630 (Ubuntu 12.10)

- by Denis

New to Ubuntu. During installation, the computer identified the wifi card and asked me to connect to the network. I did. After the first restart the wifi was working and I could see networks and connect to them. After the second restart the wireless has VANISHED. Still, the Broadcom STA drivers are enabled in system settings/additional drivers. Tried to restart 5 more times- no effect. I have studied very many topics on askubuntu but none of them work.

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Ubuntu Server 12.04, Wifi problems

- by brievolz84

When I installed Ubuntu Server 12.04, I selected the ethernet adapter because I will use that most often; however, I would like to use wifi sometimes as well. This is how far I've gotten with this problem. lspci 02:00.0 Network Controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] Network Connection iwconfig wlan0 IEEE a/b/g/n BSSID=off/any Mode=Managed Access Point=Not-Associated TX-Power=off Retry Long Limit:7 RTS thr:off Fragment thr:off Power Management:off I tried to do iwconfig wlan0 up but that doesn't work either. The error message said something along the lines of rfkill but I'm not connected to the Internet to download that particular program. Any help here would be great

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How do I turn off WLAN automatically when LAN is connected?

- by derroman

I use my Thinkpad laptop with a docking station. The docking station is connected to my router via LAN. When I walk around the house I use my laptop with WLAN. Is it possible (and how) to manage these devices with a script or something to work like this: If a LAN-Connection is up, the OS should turn off Wifi and if LAN-Connection gets lost (undocking) Wifi should turn on automatically. I use Ubuntu 11.04 64bit with Gnome 2. The system works on an Lenovo ThinkPad R500 with. WLAN-Device: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] LAN-Device: Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02) Any help would be appreciated. Thanks.

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Create a HotSpot which requires a username and password

- by Trumbun

I wish to set up a wireless access point which requires a username and password in order for clients to use the internet. The network setup will be internet modem connected to an Ubuntu Server (2 networks cards). The first network cards to get the internet to the server and the second network card to connect the the wifi hotspot. The server will host the software such as (Example software for windows) which will control the user connected by forcing them to login with the credentials given at the reception. Can some suggest some software that I can use? Thanks in advance

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Getting wifi working on 14.04

- by user286114

I have installed Ubuntu 14.04 on my laptop. When I plug in the ethernet cable the internet works fine, but I can't see any wireless network in the networking manager. The wifi switch is definitely on on my laptop! It's a Dell XPS M1330. I'm not sure what the network card is - how can I find out? nm-tool gives me this: NetworkManager Tool State: connected (global) - Device: eth0 [Wired connection 1] ------------------------------------------- Type: Wired Driver: tg3 State: connected Default: yes HW Address: 00:23:AE:28:FE:A2 Capabilities: Carrier Detect: yes Speed: 100 Mb/s Wired Properties Carrier: on IPv4 Settings: Address: 192.168.1.26 Prefix: 24 (255.255.255.0) Gateway: 192.168.1.254 DNS: 192.168.1.254

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D-LINK 2450U DSL router: Port forwarding forwading to the modem itself, not the specified IP

- by axk

I found a similar question but it has no satisfactory answers. I have a D-LINK 2540U DSL router. It has a basic port forwarding(under DNS - Virtual Servers) configuration in the administration panel where you specify: external port range, protocol, internal port range, server IP address and it is supposed to forward that port to that IP address. When I first set it up for a Real VNC connection it worked fine, just as I expected. Then I added a DynDNS configuration entry in the router's 'Dynamic DNS' section and added an additional SSH (22) forwarding rule. The SSH forwarding also worked fine (now with the dynamic hostname, but I suppose it doesn't make any difference as far as SSH is concerned). Then I removed the SSH rule and after that the VNC forwarding stopped working with the VNC client failing to connect (I have tried to connect with telnet and it also failed to connect, so it wasn't a VNC problem). After adding a rule for port 80 it turned out it would forward on port 80 though not to the specified server IP but to the modem itself. At least it is what it looks like, because it gives me the administration panel when I connect to my external IP (both using a browser and plain telnet in which case I can see that it is mini_hhtpd sitting on the port, which is obviously the modem's administration panel). Have anybody encountered a similar problem with port forwarding? I have tried to do a reset through the administration panel and to restore a backup of the settings made before I started playing with port forwarding, but it didn't help. Should I do a 'hard' reset with the button on the modem? Is it any different from the administration panel's reset (Restore default)?

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Router and Switch VLAN Configuration for Isolated Network

- by Ben

I haven't worked with VLANs much in the past and I was hoping if I could get a good explanation of what I need to setup for this to work. I have a Netgear WNR2000v2 router and a Netgear GS108T smart switch currently in my network. The fourth port on the router connects to port one on the switch. I would like to be able to isolated port 8 on the switch for use as a "guest port" when I bring home malware infested PCs for repair. I figured the VLAN capabilities of the GS108T would be able to do this for me, but I think I have a misunderstanding of how the VLAN actually works. Port 8 needs internet access but should not be able to communicate with the rest of the PCs on the home network. The subnet for the home network is 192.168.1.0/24 and I would like the guest PC to have A) 192.168.1.64 or B) 192.168.2.2. I am reading a lot of stuff about port trunking and VLAN membership, but I am confused as to which setup needs to be in place to make this work. Any help is greatly appreciated! Let me know if there is more information I need to provide. Definitely looking to learn something from this project. Thanks!

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New router messed up server 2003 setup...

- by Aceth

Hey, We were sent a new 2wire router today configured it as best we can to match the old bt voyager. We've also got X static IP's. We've manage to get our webserver on one of the new IP's public facing. then we use a hardware firewall which is in a DMZ again with a different static IP. This firewall then is our gateway for our internal LAN. with a few servers etc. The problem we're having is only our PDC (primary Domain controller which has exchange 2003 on) can't ping externally even an external IP. We've connected laptops to the 2wire router and obtain a private ip 192.168.1.X and it works fine can ping etc. our other servers with an internal ip behind the firewall can ping out fine. We've connected to the firewalls logging console and the pings from the server are allowed through so its fine there. The server in question is a Windows server 2003 R2 Enterprise SP2 + Exchange 2003 Server doesn't have firewall turned on. it has static private IP .. gateway is pointing to the right one External Static IP is routing fine inwards We've ran out of ideas .. help??

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pfSense router on a LAN with two gateways

- by JohnCC

I have a LAN with an ADSL modem/router on it. We have just gained an alternative high-speed internet connection at our location, and I want to connect the LAN to it, eventually dropping the ADSL. I've chosen to use a small PFSense box to connect the LAN to the new WAN connection. Two servers on the LAN run services accessible to the outside via NAT using the single ADSL WAN IP. We have DNS records which point to this IP. I want to do the same via the new connection, using the WAN IP there. That connection permits multiple IPs, so I have configured pfSense using virtual IP's, 1:1 NAT and appropriate firewall rules. When I change the servers' default gateway settings to the pfSense box, I can access the services via the new WAN IPs without a problem. However, I can no longer access them via the old WAN IP. If I set the servers' default gateway back to the ADSL router, then the opposite is true - I can access the services via the ADSL IP, but not via the new one. In the first case, I believe this is because an incoming SYN packet arrives at the ADSL WAN IP, and is NAT'd and sent to the internal IP of the server. The server responds with a SYN/ACK which it sends via its default gateway, the pfSense box. The pfSense box sees a SYN/ACK that it saw no SYN for and drops the packet. Is there any sensible way around this? I would like the services to be accessible via both IPs for a short period at least, since once I change the DNS it will take a while before everyone picks up the new address.

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Port Forwarding failing only to Ubuntu servers from Draytek router

- by Rufinus

I know this is a kinda unusal question, but Draytek support (..which is very eager to solve the issue) seems to reach its limits. Scenario: Draytek Vigor Multiwan router with current firmware. Multiple WAN IP Aliases on one of the wan ports DMZ (or port forwarding doesnt matter) from wan ip alias to internal host currently i have two internal hosts: 192.168.0.51 (Ubuntu) 192.168.0.53 (Debian) both should be accessible from outside via one of the wan ip aliases. both are accessible with their internal ip's at all times (!) If the router gots restartet, both external ips are forwarding to its internal hosts. But after a few minutes up to 2 hours, the ubuntu host is no longer reachable via its external interface. The debian hosts on the other hand is reachable. In what does ubuntu differs from debian ? I know at least of one user with the exact same problem. see http://ubuntuforums.org/showthread.php?p=10994279 Any ideas ? TIA EDIT: via ping diagnostics directly on vigor, 192.168.0.53 is pingable, 192.168.0.51 is not. but both hosts are perfectly reachable from anywhere inside the network. if i restart ubuntu networking it works again for a short time.... i'm out of ideas.. EDIT 2: after further investigation, i noticed a ping from .51 to the network (or a host in the internet) is enough to make the port-forwarding working again. So i will add an Cronjob as a "keep-alive" ping. This will solve the problem, but the reason for this behaivor is still in the dark. Thanks to all commentors.

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Setting up VPN with Snow Leopard Server and Linksys router

- by SueP

I'd like to get VPN going so I can log in to the office securely from home. I'm using Snow Leopard machines everywhere, and currently have Airport Extremes set up at home and at the office. I have a mac mini with Snow Leopard Server that I'm going to move to the office to act as my server. I just bought a Linksys 4-port router because it says it does VPN (model RVS4000). My problem is, I don't have a clue how to set this thing up, and the more reading I do, the more confused I get. Do I need two of these routers, one at each end? My laptop and iPad claim they can do VPN, so I was assuming I only needed one VPN router? At this point, I literally don't know what questions to ask, or where to plug this thing in. Presumably, between the modem and the airport, but...? If somebody can walk me thru some really basic setup, I'd be very grateful. Right now, I feel like going outside and screaming for a while. But that might attract the local cougar, and after the prints I saw on the arena this afternoon, I don't want to draw its attention. :-)

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Setting up VPN with Snow Leopard Server and Linksys router

- by SueP

I'd like to get VPN going so I can log in to the office securely from home. I'm using Snow Leopard machines everywhere, and currently have Airport Extremes set up at home and at the office. I have a mac mini with Snow Leopard Server that I'm going to move to the office to act as my server. I just bought a Linksys 4-port router because it says it does VPN (model RVS4000). My problem is, I don't have a clue how to set this thing up, and the more reading I do, the more confused I get. Do I need two of these routers, one at each end? My laptop and iPad claim they can do VPN, so I was assuming I only needed one VPN router? At this point, I literally don't know what questions to ask, or where to plug this thing in. Presumably, between the modem and the airport, but...? If somebody can walk me thru some really basic setup, I'd be very grateful. Right now, I feel like going outside and screaming for a while. But that might attract the local cougar, and after the prints I saw on the arena this afternoon, I don't want to draw its attention. :-)

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Can't reliably ping 6224 router from directly-attached system

- by David Mackintosh

OK, here's my situation. This is on the internet. The 6224 is the router in this picture and physically resides in Kanata. Both VLAN 1697 and 3994 are provided by an internet service provider. These VLANs are provided through a single 1Gb ethernet wire. The Kanata hosts are directly attached to the 6224; the other two sites are remote. VLAN 3994 is a single IP address space, so theoretically it shouldn't matter physically where the hosts on that subnet are. Here's the problem. I have a monitoring system which is connected further into the internet, so probes from the monitor would come in to this diagram on the 1697 VLAN. When I ping hosts at Albert or Bells Corners from the internet, there is 0 loss. The connection looks perfect. When I ping hosts at Kanata, I lose anywhere from 10 to 40% of the pings. The loss is not predictable, but: when I do lose them, I always lose at least 3, usually 4, rarely more, pings in a bunch. I have attached a monitor directly to the 6224 in Kanata on 3994.. When the monitor pings the 6224 routing interface, I see exactly the same loss pattern -- but NOT at the same time as the loss from the remote system. Ping time is around 1ms. When the monitor pings another system directly attached to the 6224, there is 0 loss. Ping time is about 0.1ms, one-tenth of the time to ping the router. Anyone know what is going on here?

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Network outage caused by SMC8013WG Cable Modem/Router ?

- by mkocubinski

At work, we have a basic Class C Network. The gateway/router is a SMC8013WG (stock comcast commercial cable modem), and simple unmanaged switch (HP Pro Curve 1400 24G). The SMC8013WG is our default gateway as well as DHCP server. Periodically, I'd say almost every other day.. the entire network will just stop responding. I won't be able to ping/see the gateway, any computers on our local network, or anything on the internet. The only way to fix this is to unplug the Comcast cable modem, wait, and plug back in. This unfailingly fixes the problem. But this doesn't make much sense to me.. shouldn't the network still be fine locally, since everything is plugged into the switch anyway? Why would resetting the router fix this? Can anyone suggest anything to check to in order to narrow this problem down? Just to be clear.. here is the basic topology: { Internet } -- (12.345.67.89) Comcast Cable Modem (192.168.1.1) -- Switch -- 192.168.1.2-254 P.S. Our IT guy is in about 3 hours a day every other week or so, so.. we're kind of on our own most of the time.

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No wireless networks found - BackTrack 5 - Wicd Network Manager - VmWare

- by litlmike

I have a Lenovo T500 laptop with an Intel(R) WiFi Link 5100 AGN I have Win 7 Enterprise installed as the OS Inside that Win 7 install, I have installed VmWare Workstation (8.0.0 build-471780) Inside the VmWare, I have installed BackTrack 5 (BT5r1-GNOME-64) Under the VmWare settings, I have Bridged Mode Enabled for the Network Adapter In BT5r1-GNOME-64, under the Wicd Network Manager, it says "No wireless networks found" What do I fix so that it can find the wireless networks? Is the issue with BackTrack, VmWare, etc.?

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