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  • upgrade from 11.10 to 12.04 killed my network connectivity

    - by Daniel
    I have a wired network connection that worked fine in version 11.10. I upgraded to 12.04 and immediately after the upgrade was completed, the OS reported my "cable unplugged". It is not unplugged and it is not defective. I have a D-link DFE-530TXS 10/100 ethernet NIC and I see what seems to be the generic 10050 driver loaded. Is there any way to just flush anything and everything to do with the network configuration and have Ubuntu reset/find everything again? If not...is there any way I can get it to realize that my network cable is not unplugged? (considering it worked mere minutes before). Thanks.

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  • Static IP breaks Network connection

    - by Pasquale Tedesco
    I am somewhat new to Linux. I am setting up a Web server and installed Ubuntu server 14.04 on an vSphere ESXi 5.5 host. I am connecting perfectly fine to the internet when using DHCP but when I apply my Static settings I loose the ability to connect to websites. Whats weird is I can Ping google.com but if I try wget gooogl.com it hangs at connecting to google.com (google.com):173.194.43.32:80 and I get "failed: connection refused" But if I am set to DHCP the connection resolves perfectly. Thanks # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 #iface eth0 inet dhcp iface eth0 inet static address 10.1.2.25 gateway 10.1.2.2 netmask 255.255.255.0 search tsig.com dns-nameservers 10.1.2.13 10.1.2.30

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  • Network disabled on some wake-ups on saucy laptop

    - by Arild
    Since I upgraded to Saucy Salamander 13.10, with every third suspend or so, the network is disabled and I'm unable to re-enable it. I've had to reboot to make it run again. The network menu will have the option Enable network but clicking it will only produce a tick in the menu item, nothing else changes. How can I make it enable automatically after suspend? In the meantime, is there a workaround to at least manually re-enable it? The PC is a Lenovo IdeaPad S205 using drivers r8169 and rt2800pci.

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  • Motorola Surfboard SB6121 modem conected to 2WIREi38HG wireless router but there's no internet access

    - by Jessica
    I have just switched to Comcast cable internet from AT&T Uverse and I was hoping to use the 2WIRE wireless router with the new Surfboard modem so I can have wireless access. I messed around with some settings and got it working for my laptop (I'm not terribly well versed in computer stuff; I think it was mostly luck) for about a week. The other day I tried to get online and there was no internet connection. I restarted the equipment with no success and then plugged the modem directly into the laptop. This worked, so I knew there was no outage. I connected the ethernet cord to the router and a second cord to my laptop and that worked, too. But when I tried again just with the wireless the laptop connects to the router, but doesn't recognize it or find an internet connection. I tried to go to http://gateway.2Wire.net to fiddle with the settings, but all I get is a Server Not Found page. I tried to check the ip address but this is really kind of over my head and I get different things checking it while plugged into only the modem vs when I plug into the router. Can anyone help? The frustrating thing is that I had it working for awhile, so I know it can do it!

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  • Ubuntu Server Wireless connection issue - replaced router but kept ESSID

    - by Stevo
    I have a ubuntu server 12.04 which was connected to my wireless network with no problem I replaced the wireless router but kept the ESSID and password the same. All other devices on network have connected correctly. However the Ubuntu Server will not route correctly. It will connect to the wifi router, and get a dhcp served IP address, however it will not route anything. I cannot ping the router from the server. the contents of /etc/resolve.conf are updated with the information from the router, (the host name has been served) I know there is nothing wrong with the router or the server, or the wireless card etc. I'm assuming there's some cached setting that associates the old router with the ESSID and causing the issue. I've got a lot of other devices connected to the router, so don't want to change the name of the ESSID. How do I fix this? EDIT: outputs (abbreviated as I've got no cut and paste) netstat -rn: Kernel IP Routing table Dest Gate Gen Flags MSS Window irtt Iface 0.0.0.0 192.168.0.1 0.0.0.0. UG 0 0 0 wlan0 192.168.0.0 0.0.0.0. 255.255.255.0 U 0 0 0 wlan0

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  • Wireless driver activation issue in Compaq c700 in Ubuntu 9.04

    - by Fazil
    I am using Ubuntu 9.04, I cant access my wireless driver, I activate the madwifi in administrationhardware drivers, but I could'nt activated the wireless too. when I type lspci I get the following message, ################################################## # 00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 04) 00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 04) 00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 04) 00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 04) 00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 04) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f4) 00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 04) 00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 04) 00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 04) 01:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01) 02:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) ################################################## but when I tried in Windows I found that the driver for my laptop is ################################################ atheros AR5007 802.11b/g WiFi Adapter ################################################ so what can I do for solving this problem.

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  • Wifi stops working in 13.10

    - by Vitor
    OK, my wifi is connecting fine, but it just stop downloading and uploading data. The skype stops, trying to reconnect, the firefox nighly and the google chromium stops loading pages and websites, everythings stops. But when I see the network icon: connected to my wifi. Then, I simply reconnect, or disconnect and connect again. Reconnecting, the wifi starts working again, the skype icon turns green, the browsers work again. Previously, I had 13.04 and never had this problem. When I upgraded to Ubuntu 13.10, the wifi started to do this. And the wifi has this problem since the early times of 13.10; since I installed 13.10, the wifi is having this issue (from the first day I installed it). Anyone having the same problem? Anyone knows how to fix it?

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  • 3G dongle and memory card detection

    - by user212632
    My questions is about 3G dongle (Huawei E1752) that I use for my internet on Ubuntu 12.04. The big issue is that ubuntu only recognise the dongle if I plug it in before booting up. But if somehow I loses connection (due to network being low) then the only way to use the 3G dongle again is to reboot my machine, which becomes a pain. I have the same issue with the memory card reader of my laptop whereby it only reads when I insert the card before booting up. My laptop is an Acer V3 -571g. At first I thought it was an issue that the model was quite new, but I have been updating my ubuntu for a while, and this issue has kept being the same

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  • wifi works only after connecting through wire

    - by orustam
    I have fresh installed ubuntu 12.04. it is my first ubuntu installation and i'm a bit confused about the network connection. Wifi shows up and connects(at least it shows that the connection is established), but i can't open any pages, i've tried to ping some sites and it fails either. If i try to connect through a wire it works, what is interesting to me is that after i used my wire connection i can use my wifi properly without a wire pluged in. i think it probably has to do with my settings? I tried to find a solution but can figure it out on my own. My Proxy set to none(have applied it system wide) Please help me if you have any clue:)

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  • Many clients on a wireless AP for UDP broadcast packets

    - by distorteddisco
    I asked this question on StackOverflow and was directed over here, so I'd appreciate any advice. I'm deploying a smartphone application as part of a live music performance that depends on receiving UDP broadcast packets from a wireless access point. I'm guessing that between 20 and 50 clients will be connected at any one time. I'm aware that a maximum of 20 clients per access point is advised, but as the UDP broadcast packets are ground through the LAN, how would I be able to link multiple APs together? I'm looking for recommendations on a suitable AP for this. The actual data transmission rates are very low - only a few kB/s - as I'm just sending small messages to the smartphone apps, and there will be no WAN internet connection. I tried it with a few connected peers on an adhoc wireless connection without any problems, but ran into dropped packet issues on an old WRT54G running ddwrt, though it's in pretty rough shape. What's the best way to do this? I suppose I could limit concurrent wireless connections to 20 clients... but more would be nice. EDIT: I should also say that it's purely one-way communication; the smartphone application is only receiving broadcast packets, not sending anything.

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  • Wi-Fi connections gets Idle

    - by marcocamejo
    I am having this terrible problem. I have read a lot of people getting disconnected from the Network, it is not my case, I don't get disconnected, the connection just gets "idle" most of the time. It only works for short periods of time (seconds, a couple of minutes at most), then gets dead, then works again, and so on. It is annoying. I am using Ubuntu 11.10 on a Dell M5030 laptop. I have Windows 7 installed too, and of course with it, the wifi works perfectly. Any idea? advice?

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  • WiFi is painfully slow, sometimes stops altogether

    - by Zelda64fan
    Lately my WiFi connection has been quite slow, and sometimes I lose my internet connection altogether (but the computer does not actually disconnect from the WiFi network). This only affects my laptop and only when it's running Ubuntu, so I think it must be a problem with Ubuntu. I haven't changed anything recently; this is on 12.10 64-bit. What could it be? Update: It's doing this now. The connection isn't completely dead, it's just staying under 5 kB/s. Still frustrating though. It also seems to affect all users.

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  • Both bluetooth and wifi not connecting

    - by raff5184
    I'm having problems both with bluetooth and wifi, my pc is a Lenovo B5400. The BT can do a scan, but it isn't able to find any devices; I don't see any wifi network (but I have a working Ethernet connection). I read many topics on the internet but before trying different solutions and make some changes (I just installed Ubuntu 14.04) I would firstly try to understand what could the problem depend on. What are the commands I can use to see what's going on? Thank you in advance

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  • Wifi connection problems

    - by user12511
    I have Ubuntu 10.10 installed on a HP Pavilion DV2750ea. The wifi card is an Intel 4965AGN. When I first started using Ubuntu on this laptop it connected wirelessly to the network. Then it suddenly stopped. The Wifi card power light is off and all information says the card is disabled. When the laptop is powered on the wifi power light turns on and stays on until Ubuntu finishes loading. I have replaced the wifi card and the wifi switch module with no change. Please can you help.

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  • Windows-7 Ultimate 64 bit wont connect to my wired/wireless networks

    - by A302
    Windows 7 Ultimate 64 bit. Everything was working fine & then just stopped working. The nic card Realtek PCIe GBE Family Controller is enabled but does not connect to my router (cables & router ports are good). Wireless Atheros AR5007EG is enabled but the connection is limited (encryption type / key have been verified). A laptop running XP can connect both wired / wireless. SSID is not being broadcast, connect to network if it is not broadcasting is checked. Have checked services.msc for Bonjour & did not see it listed. Network & sharing center does not list any active networks. Device manager lists both devices as functioning properly. Router configuration has not been changed. Virus scan has not found anything. I would like to fix this rather than using Acronis to do a system restore. Thanks in advance for any advice offered in solving this. 26 Jan, the nic card & wireless are working using PCLinux OS Live CD. It appears that the problem is Windows 7 related.

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  • Cannot get laptop wifi to work in ubuntu 12.4

    - by Coda
    Hi i have a Toshiba Satellite L645D-S4106 laptop and i recently installed ubuntu 12.4 on it and i cannot get the wifi to connect for the life of me. When i tried ubuntu out before installing it, the wifi worked while windows was still installed on it. Then i installed ubuntu and now there is no wifi. I can't even flip the wifi network switch to the on position. I installed the driver from realtek for the linux driver and still nothing. Doing rfkill list all shows soft blocked: no and hard blocked: yes. Can anyone help me :p haha very frusterating. It probably is something very dumb. Thanks

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  • How to setup complete file access and control on a network

    - by user96270
    I have a media server running ubuntu 12.04 and I want it setup so that any PC on the network (windows etc) has complete access to all files, folders etc with read, write, edit, copy to, copy from permissions. No need for security (IE no password or user name, just select it on the network and start editing). I have samba installed and personal file sharing is enabled but my windows PC cannot see it on the network. I already set up another server as I described but unfortunately I can't remember how or where I found the guides for it. Any on know of a guide that covers what I want?

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  • How much network overhead does TLS add compared to a non-encrypted connection?

    - by Daniel Sterling
    (Approximately) how many more bits of data must be transferred over the network during an encrypted connection compared to an unencrypted connection? IIUC, once the TLS handshake has completed, the number of bits transferred is equal to those transferred during an unencrypted connection. Is this accurate? As a follow up, is transferring a large file over https significantly slower than transferring that file over http, given fast processors and the same (ideal) network conditions?

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  • On a local network, are you able to password protect certain folders and how (in windows xp)?

    - by Derek
    I have a local network set up for my small office which consists of me, the manager, my wife, the secretary, and a few sales people/others. I would like to share passwords over the network and other such things privately to my wife, the secretary, but would not like the sales people and others to have access to it, yet I need the others to have access to other folders/documents that I'd like to share. How would I go about doing this if not by password? Thanks in advance

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  • Linux network programming. What can I start with?

    - by Negai
    Hi everyone! I've recently got interested in Linux network programming and read quite a bit (Beej's Guide to Network Programming). But now I'm confused. I would like to write something to have some practice, but I don't know what exactly. Could please recommend me a couple of projects to start with? Thanks.

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