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  • Can't connect to windows 7 ad-hoc network

    - by Nikolaj
    Good day! I have installed ubuntu 12.04 on my laptop and I need to have network connection on it. Have a desktop PC, where I've created ad-hoc wi-fi network(Windows 7) and can't connect to it. So, problem: I see my network in the list of networks to connect, but I cant connect to it because it's grey color and not active(can't click on it). Could somebody help me to solve that problem? Thanks in advance!

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  • Difference between a socket and a port

    - by cobie
    Could someone please explain quite clearly the difference between a port and a socket. I know that a port serves as a door into the network for an application process and that the application process uses a socket connection to the given port number to handle network communication but when you have multiple processes listening on a single port number, I am finding it difficult to understand the difference between the socket and the port and how they all fit together.

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  • No Internet Connection - ubuntu 11.10

    - by emersonhsieh
    I installed Ubuntu 11.10 recently. After the first bootup the computer freezes so I have to force-quit my computer. Then I turned on my computer after that. I tried connecting to the internet. My (and my neighbor's) wireless networks shown up, but no matter how many times I tried, I can't connect to my home network. I checked the password and the other laptop's internet works (a MacBookPro). It was a wireless network. What's weird is that the Wireless network worked when I was installing ubuntu How can I connect to the internet now? I don't have a wired network. Please Help! Any help will be appreciated Specs: ASUS F81Se, Windows 7 Dual-boot, I remember the wireless card was made by Atheros, 4GB RAM

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  • Track ping, download and upload daily

    - by euDennis
    I'm with some problems with my internet with oscillations in connection, causing some sites to get "Not Found" page sometimes. This isn't all the time, just some random times daily. My question is. There is any tool to monitor these basic information (ping, upload and download) daily to make an report and check the oscillations? Because, if someone from internet provider come at my house, probably it won't see the oscillations. Thanks, bye

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  • Wireless issues BCM4311

    - by user207757
    I have been working with a nice Gent but I am getting stuck. I am just getting back in to Linux and Ubuntu was recommended. I like the look so far but the wireless isn't working I run the update and when it says complete it hangs at the end. Please let me know what to do at this point. "wl: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.11.0-12-generic/updates/dkms/ depmod.... DKMS: install completed." Hangs here!! Thanks for all your help, D.C.

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  • solve TOR edge node problem by using .onion proxy?

    - by rd.
    I would like to improve the TOR network, where the exit nodes are a vulnerability to concealing traffic. From my understanding, traffic to .onion sites are not decrypted by exit nodes, so therefore - in theory - a .onion site web proxy could be used to further anonymize traffic. Yes/no? perhaps you have insight into the coding and routing behind these concepts to elaborate on why this is a good/not good idea.

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  • Start & Stop internet connexion without broking Network Manager

    - by user3634569
    I am on Precise. I used this command (with an alias), to close the network, dbus-send --system --print-reply --reply-timeout=120000 --type=method_call --dest=org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager stop it worked, now I have to use dbus-send --system --print-reply --reply-timeout=120000 --type=method_call --dest=org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.Sleep boolean:true it work but not so well, sometimes I can't restart the network and NetworkManager is blocked too and strange errors even GUI freeze . What I need is a command line which close the network and don't mess with Network Manager, maybe with the routing table or what else.

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  • Check if the vector is behind another or maybe opposite directions?

    - by Gilson
    I'm doing a network game and on the client side, i interpolate the client position with the server sent extrapolated position. The client has its own physics simulation wich is corrected by the server in steps. The problem is when it laggs and i 'kick' the ball, the server gets a delayed message and sends me the position backwards of the client position wich makes the ball goes back and forth. I want to ignore those and maybe compensate that on the server, not sure though. The problem is the clock difference on those case are 0.07ms or 0.10 ms wich isn't that high to ignore the message i guess. When i get the server position, i extrapolate with the clock interval * serverBallVelocity Can i check if my new ball server position is behind my actual ball vector position? I tried to use the dot product after normalized the two vectors to check if they are opposite but it ain't working properly. Any suggestions on checking that?

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  • A tinkered PC resets its nameserver (resolv.conf) on each boot

    - by aitchnyu
    The Ubuntu 11.10 PC resets resolv.conf on each boot, only with a comment remaining. How do I fix this by setting the persistent storage? It was tinkered by somebody else and I (and him!) cant trace his actions. The graphical connection manager also refuses to work thanks to the tinkering. Content of interfaces file: root@technovia-3:~/dev/spectrum/spectrum# cat /etc/network/interfaces auto lo iface lo inet loopback

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  • Ubuntu 12.10 Network Connection menu GUI doesnt work properly

    - by wax
    Many a times I have seen When I click on network connection(besides volume icon), I am unable to select any options. When I hover over VPN connections, the list shows nothing. I have added many VPNs. Network menu becomes non responsive to any clicks. This is annoying because I am not able to connect to any of the VPN connections. "Enable Wireless", "Edit Connections" or any other option doesnt work at all. Restarting ubuntu fixes this issue. But problem starts randomly again and restarting my laptop is the only way to fix it. Is this a known bug? Any ways to fix this prob?

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  • ubuntu will not connect after restart

    - by nicedoggy
    Firstly, I hope this hasn't been covered elsewhere, I have searched but haven't found this particular problem. I updated to 12.04 a while back and though I now thoroughly regret that decision, I'm able to live with 12.04 and all it's odd little quirks. The one problem that I would like to fix is this. I have a small network, using a router modem which stays on most of the time. If the computer is switched off, when it is switched on again I have to click on "auto Ethernet" in "Network" in order to get on the internet. It then works fine. Previous versions just connected automatically on restart. When 12.04 says it is unable to connect, other computers on the network are able to connect. Thanks for any help.

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  • Can I share files via SAMBA while in root?

    - by user212501
    I have a couple of things going on here. I am currently running UBUNTU 10.04 in root via "STARTX" command. The reason being is that I keep getting the "LOW GRAPHICS ERROR CODE" and I cant not start up normally. Now I have researched & researched the error. I mean I got my SUDO on........, o.k. I'm really done trying to fix this error. I just wanna re-install. (funny thing. This startx command is how Im using the laptop now, so I know that it is a software issue) So here's my dilemma that is inside another dilemma. I have about 30gigs of info that I need to get off the laptop before I can re-install. Any thoughts What say you? LOTR LOL

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  • Syncing properties across a game server

    - by Vaughan Hilts
    I'm beginning to implement a simple scripting system into my networked server, and I've hit a snag. Before, I've been wrapping my calls into functions on objects that manipulate objects, but lately I've been finding this to be a pain for simple things. For example, if I set 'player.HP = 1'.. this works server-side. But the player side never sees this change unless I explicitly send a packet to inform the client. For many things like map swapping that require more complicated changes, like change X, Y, Map and do this.. I have a function. That's fine. But what about these small properties I want to sync?

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  • WiFi, No ping, other works fine

    - by Linux Mom
    I installed Ubuntu 12.04 LTS for my mom, this runs OK. However recently, I switched back and forth between encryptions on our WiFi Router from WPA-PSK to WEP and back again to WPA-PSK, same password. Now this old laptop won't even ping the gateway on the router, although the nm-applet shows connected. I tried re-adding the network and putting in the BSSID. I did this over again sometimes just to verify. I tried with my 3G Tethering on my phone, it works fine, can go online too. My other Linux laptop can go on the same wifi as well as my phone. And this laptop used to been online on the same network, same password, same encryption (WPA-PSK) What can be wrong ? Does it need a serious kick in the butt or removing some cached authorisation somewhere?

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  • How to connect MTS MBlaze

    - by murali_ma
    i have installed ubuntu 11.04 inside the windows xp. i have MTS Mblaze USB Modem. (my service provider is MTS MBlaze,india) i want to use Mblaze into ubuntu so that i did the following steps for make connecting the device. from the task bar->edit connections->mobile broadband->choose country->mts mblaze and ok i give username and password ([email protected] and password MTS. ok now i enable mobile broadband , MTS MBlaze connection1(connection name) from task bar. steps followed from "http://randomshandom.wordpress.com/2010/12/20/how-to-connect-mts-mblaze-device-in-ubuntu-10-10-11-04/#more-3" for the first time it successfully connected and browse the internet. after i restart the system i connect it. it does not connected. it shows Modem network disconnected. i accessed many times and delete the connection and recreated but i does not help me. if i try to connect device i think it the search the network, i saw the wave signal. img Image for showing problem:

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  • Ubuntu 12.04 wireless does not detect networks

    - by dudeitsdevin90
    I installed Ubuntu on a partition of my MacBook Pro. Wireless connections work fine when I switch to OSX, but the wireless networks are not even detected when I boot Ubuntu. I installed Wicd as a new network manager, but I'm still having the same problem. Ubuntu works on a wired connection though. I have searched the web for a solution... similar questions have been asked but I have not been able to find a way to fix this problem. Any help would be greatly appreciated.

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  • Why Is the Localhost IP 127.0.0.1?

    - by Jason Fitzpatrick
    Geeks the world over know their local host as 127.0.0.1, but why is that specific address, of all available addresses, reserved for the local host? Read on to delve into the history of local hosts. Image by GMPhoenix; available as wallpaper here. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. 7 Ways To Free Up Hard Disk Space On Windows HTG Explains: How System Restore Works in Windows HTG Explains: How Antivirus Software Works

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  • Is there a way to get my NETGEAR N900 to work with ubuntu?

    - by user208088
    I'm using a NETGEAR N900 USB Wireless Adapter to pick up our home network connection while running Windows 7. I have Ubuntu 12.04.3 running on a second hard drive in my computer that is not compatible with my adapter. I'm not very familiar with how to work around in Ubuntu yet and this is the only thing keeping me from using it. I've seen this asked before but the instructions were very confusing to me! Help is appreciated

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  • Is it possible to setup a DHCP server only for local virtual machines?

    - by thiesdiggity
    I have a quick question. I have a bunch of virtual machines (VMWare Workstation) running on an Ubuntu server and have found that VMWare NAT (DHCP) service is unreliable and slow. I have to use NAT instead of bridging because the server is in a data-center that does not have DHCP and I don't have enough static IP's for all the VMs. Is it possible to setup the host (Ubuntu) to be a DHCP server but only for the local virtual machines? The server has 2 network interfaces, so I'd set eth0 to be a static IP, which connects to the outside world, and eth1 to listen for DHCP. Now, I am thinking if I don't want DHCP to broadcast I would just not connect a cable to eth1 and setup the VM's to use bridging on eth1. That way DHCP would not broadcast through my network but be listening on that interface. Would that setup work?

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  • Wired connection not being recognized

    - by maxifick
    I'm on Ubuntu Maverick (10.10). I've read a few threads regarding wired connection problems, but haven't found a solution yet. The problem appears after I connect to a wireless network. When I disconnect wireless and plug in an internet cable, the wired connection is not recognized at all. Even the socket appears dead (there are no diodes flashing). The only solution so far seems to be restarting the computer. Network Manager then tries to connect to a Wi-Fi, but the wired connection is listed and working. I've tried sudo restart network-manager, but that doesn't solve anything. After a while, available wireless networks start appearing, but the wired still doesn't. Any ideas? Thanks in advance. Edit: Here is the dmesg output after switching off Wi-Fi and then plugging the internet cable. [18200.623543] Restarting tasks ... done. [18200.648422] video LNXVIDEO:00: Restoring backlight state [18200.707580] sky2 0000:02:00.0: eth0: phy I/O error [18200.707715] sky2 0000:02:00.0: eth0: phy I/O error [18200.707819] sky2 0000:02:00.0: eth0: phy I/O error [18200.707922] sky2 0000:02:00.0: eth0: phy I/O error [18200.708025] sky2 0000:02:00.0: eth0: phy I/O error [18200.708127] sky2 0000:02:00.0: eth0: phy I/O error [18200.708229] sky2 0000:02:00.0: eth0: phy I/O error [18200.708332] sky2 0000:02:00.0: eth0: phy I/O error [18200.708824] sky2 0000:02:00.0: eth0: enabling interface [18200.709587] ADDRCONF(NETDEV_UP): eth0: link is not ready [18202.662422] EXT4-fs (sda9): re-mounted. Opts: errors=remount-ro,user_xattr,commit=0 [18203.324061] EXT4-fs (sda9): re-mounted. Opts: errors=remount-ro,user_xattr,commit=0 [18211.193137] eth1: no IPv6 routers present [18212.844649] usb 5-1: new low speed USB device using ohci_hcd and address 5 [18213.017235] input: USB Optical Mouse as /devices/pci0000:00/0000:00:13.0/usb5/5-1/5-1:1.0/input/input16 [18213.017499] generic-usb 0003:0461:4D17.0004: input,hidraw0: USB HID v1.11 Mouse [USB Optical Mouse] on usb-0000:00:13.0-1/input0 After system restart, dmesg says this: [ 19.802126] sky2 0000:02:00.0: eth0: enabling interface [ 19.802394] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 20.812533] device eth0 entered promiscuous mode [ 21.495547] sky2 0000:02:00.0: eth0: Link is up at 100 Mbps, full duplex, flow control rx [ 21.495677] sky2 0000:02:00.0: eth0: Link is up at 100 Mbps, full duplex, flow control rx [ 21.496574] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

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  • Twitter "Authentication Error" Turpial & Choqok (latest versions)

    - by PineMarten
    I use Turpial a lot, but Turpial isn't connecting at all. I can still connect to Twitter thru the OS app (no issues signing in through Online Accounts) and of course I can still sign in using the browser, but Turpial gives me an "Authentication Error" and Choqok fails to do anything. I've tried changing my password, revoking the Turpial and Ubuntu apps in Twitter and re-enabling them, but then it gives me an "Invalid Credentials" message. I've even removed and installed Turpial multiple times, still nothing. I can't find any information or resources for this type of error from Turpial online. I think it may be something recent after finding this message elsewhere: (article related to "Birdie") It looks promising i'm currently using it atm, since all the other twitter clients no longer work due to the API 1.0 shutdown (posted today) I've never used Choqok before today, so I don't even know if I've set it up properly. It's failing to retrieve or send Tweets it just blank screens, but at least it signs in. I've figured that this isn't an issue with Ubuntu, or Turpial or Choqok, or the router (already replaced it today), so I don't really know what I'm dealing with here. I hope it's not another API issue, Facebook did something similar just a few weeks ago

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  • I want to access internet on ubuntu 12.04.1 guest system from windows 7 64bit host in virtualbox 4.1.18 How to do so?

    - by Rohit
    I am using Windows 7 64bit as host system and i have installed ubuntu 12.04.1 in virtual box as stated above. I have a dsl connection which works well on my host system and now I need to access the same connection on my guest ubuntu. I cant see any such settings in ubuntu. I am total biginner and dont know anything about linux. Win 7 is showing unknown network. Please guide me from the scratch. Thank you.

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  • How to mount a network drive?

    - by Relik
    Ok so I'm trying to set-up a home file server. I'm thinking about just setting it up as an FTP server, no particular reason other than I'm familiar with FTP and samba tends to be very frustrating. Basically the set-up I'm going for, is to be-able to create multiple user accounts for the server and restrict or allow access to specific folders on each user. FTP is the only way (that I know of) to accomplish a set-up like that. My question is how can I mount an FTP server as a drive in Ubuntu so that all my applications can access it just like any other driver or folder. An example would be downloading 12.10 via torrent when it comes out, I would like to be able to tell transmission to just download the file straight to my ftp server. I know how to do this in Windows, its actually very easy. But I cant figure it out in Ubuntu. I have tried using the "connect to server" option in nautilus, and it works, but it doesn’t give me the result I want, most applications don’t see the folder, while others can. Also I am open to options other than FTP if anyone has any suggestions. I've looked into FreeNAS but that doesn’t seem to allow me to control the user accounts the way I want to. Then after all is said and done I would still need a way to mount the shares as a drive in Ubuntu. The ability to mount network drives in windows is one of my favourite features, but seeing how Ubuntu is now my daily OS and has been for about 4 years, I really need a way to accomplish the same thing in Ubuntu. Also a GUI would be preferable, seeing as there will be multiple people using this server, I would like it to be as easy as possible. EDIT: this link here seems to be almost exactly what I'm wanting to do, if I could find a GUI that can do this ill be almost set. then I would just need to find a way to hide specific folders from certain users.

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  • How to synchronize the ball in a network pong game?

    - by Thaars
    I’m developing a multiplayer network pong game, my first game ever. The current state is, I’ve running the physic engine with the same configurations on the server and the clients. The own paddle movement is predicted and get just confirmed by the authoritative server. Is a difference detected between them, I correct the position at the client by interpolation. The opponent paddle is also interpolated 200ms to 100ms in the past, because the server is broadcasting snapshots every 100ms to each client. So far it works very well, but now I have to simulate the ball and have a problem to understanding the procedure. I’ve read Valve’s (and many other) articles about fast-paced multiplayer several times and understood their approach. Maybe I can compare my ball with their bullets, but their advantage is, the bullets are not visible. When I have to display the ball, and see my paddle in the present, the opponent in the past and the server is somewhere between it, how can I synchronize the ball over all instances and ensure, that it got ever hit by the paddle even if the paddle is fast moving? Currently my ball’s position is simply set by a server update, so it can happen, that the ball bounces back, even if the paddle is some pixel away (because of a delayed server position). Until now I’ve got no synced clock over all instances. I’m sending a client step index with each update to the server. If the server did his job, he sends the snapshot with the last step index of each client back to the clients. Now I’m looking for the stored position at the returned step index and compare them. Do I need a common clock to sync the ball? EDIT: I've tried to sync a common clock for the server and all clients with a timestamp. But I think it's better to use an own stepping instead of a timestamp (so I don't need to calculate with the ping and so on - and the timestamp will never be exact). The physics are running 60 times per second and now I use this for keeping them synchronized. Is that a good way? When the ball gets calculated by each client, the angle after bouncing can differ because of the different position of the paddles (the opponent is 200ms in the past). When the server is sending his ball position, velocity and angle (because he knows the position of each paddle and is authoritative), the ball could be in a very different position because of the different angles after bouncing (because the clients receive the server data after 100ms). How is it possible to interpolate such a huge difference? I posted this question some days ago at stackoverflow, but got no answer yet. Maybe this is the better place for this question.

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  • Operation times out trying to SSH outside LAN i.e. from internet to LAN no connection is established

    - by Pelle L
    I run Ubuntu 12.04 and have no success connecting with SSH from "Internet". The router is a TL-MR3420 which is set up to forward requests to one of the NIC's on ubuntu machine (which has in total 3 NICs). I can SSH from a client on the "local" network/LAN. The forward mechanism in the router seems to work. If I stop SSH service on the Ubuntu machine and instead start one on the windows machine - it works like a charm. I do not use the Std port 22 but that shouldn't be an issue as far as I understand - sine it works on the same port on the win machine. Since my public IS isn't static I use a dynDNS service but as said earlier the same setup works from the win machine. The router is located on 192.168.0.1 The Ubuntu NICs has the following IP: eth2 192.168.0.100 , eth1 192.168.0.101 , eth0 192.168.0.102 and I have forwarded the "outside" request to 192.168.0.100 In regards for firewall settings on the Ubuntu machine I have disabled the ufw and the command ufw status give status: inactive. I don't now it this is relevant information but teh command iptables --list give: Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination I have tried to catch traffic with help of wireshark (a tool I'm not too used to use) and it seems as a few (3?) "requests" actually reaches the NIC but ... nothing happens. The syslog does not show any entries during these attempts. Perhaps it could be some routing issues but I have reached my level of competence and are stuck ... all help and support to get this sorted out is much appreciated. I'm new to Linux so please do not assume I have a configuration that is correct - but as I wrote earlier - if the client that initiate SSH is on the LAN it all works. PS:I have also tried to get VPN (PPP) working from Internet with no success - once again VPN works on the windows machine ... so my best guess is that this is related to how the ubuntu machine handles (IP) traffic and not the TL-MR3420 router or other network issues.

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