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• Fixing IP Renewal After Laptop Suspend

  - by Cerin

  I have a laptop running Ubuntu 10.04, and I've noticed that with some wifi networks, but not all, I'm unable to reconnect after coming out of suspension. I've tried both Network Manager and Wicd management daemons, and both get through validation, but get hung up on "Acquiring IP address...". The only solution I've found is to reboot the machine, after which it acquires an IP address very quickly. What's the underlying issue here? What would be a more efficient way to resolve the problem? EDIT: I've noticed that if I open Wicd and manually press "Connect", it fails to acquire an IP. However, if I do nothing and let it automatically try and connect, it acquires an IP and connects just fine...

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• how to find 3g modem signal strength with out AT commands?

  - by neckTwi

  when i try to find signal strength of my modem using AT+CSQ, the usb device is locked by the network manager. To find the signal strength with AT+CSQ i have to first disable network connection using #nmcli nm wwan off to unlock the device inode /dev/ttyUSBX. Is there any nmcli option to get signal strength or any other option? EDIT The gdbus object for NetworkManager don't have any method like getSignalStrength. Network manager is locking device file preventing to use AT commands. nm-applet was able to display signal strength in system tray. so there should be a way to get signal strength form network manager! nmcli is command line counter part of nm-applet. Can i get signal strength using nmcli? nothing about signal strength is mentioned in its man pages.

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• Application to organize / manage installed networks

  - by vicmp3

  I was wondering if there is a Application where you can organize networks. I mean if you have installed some networks you have to note every pc's name, his ip-address and so on. Is there a Application where you can manage it? I saw the monitoring tools but that is not exactly what I'm looking for. Maybe I didnt explain me well, after all my englis his not so good :) For example if I install many different networks I write in a book how I configured them. I write pc-name ip-address ip-gateway ip-broadcast and so on for each network. It will be great if I can do it in a program to organize it well, and for example it gives me a node view of the network.

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• No Sound from Shared Media

  - by Travis

  I have a shared media folder that I have all of my mp3's in. When I try to play them using Ubuntu, I get no sound, but the media player (Rhythmbox, Exaile, etc) display that they are playing the file, it looks like everything is playing but no sound. I have checked and rechecked the volume levels of the system and each application and I see no issues. If I move a file to the local drive, it plays just fine. I do sound checks while the file is playing and I get audio (front left, front right) from the test but not from the media file that I am playing. Any help would be greatly appreciated.

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• UFW blocking random packets on 443

  - by s2jcpete

  All, I have UFW setup to allow traffic on port 443. It works as expected, though I have a large amount of UFW Block log entries. To Action From -- ------ ---- 80 ALLOW Anywhere 443 ALLOW Anywhere 22222 ALLOW Anywhere 80 ALLOW Anywhere (v6) 443 ALLOW Anywhere (v6) 22222 ALLOW Anywhere (v6) However in my syslog file I see this: [UFW BLOCK] IN=eth0 OUT= MAC=XXX SRC=<foreignip> DST=<serverip> LEN=40 TOS=0x00 PREC=0x00 TTL=116 ID=22025 DF PROTO=TCP SPT=49622 DPT=443 WINDOW=0 RES=0x00 ACK RST URGP=0 About 30 or so seconds later pound (which I'm using for SSL decryption and port redirection) throws a connection timed out messsage. I'm assuming this is because UFW is blocking the packet. I'm at a loss as to an explination. Could the packet be malformed or something, is this normal? Edit - I have since changed the /etc/defaults/ufw and set ipv6=no, so the v6 rules are no longer in the mix. The server is still showing the block / connection timed out behavior though. The new ufw status output is: Status: active Logging: on (low) Default: deny (incoming), allow (outgoing) New profiles: skip To Action From -- ------ ---- 80 ALLOW IN Anywhere 443 ALLOW IN Anywhere 22222 ALLOW IN Anywhere

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• SnapBird Supercharges Your Twitter Searches

  - by ETC

  Twitter’s default search tool is a bit anemic. If you want to supercharge your Twitter search, fire up web-based search tool SnapBird and dig into your past tweets as well as those of friends and followers. Yesterday I was trying to find a tweet I’d sent some time last year regarding my search for an application that could count keystrokes for inclusion in my review of the app I finally found to fulfill the need, KeyCounter. Searching for it with Twitter’s search tool yielded nothing. One simple search at SnapBird and I nailed it. SnapBird requires no authentication to search public tweets (both your own and those of your friends and follows) but does require authentication in order to search through your sent and received direct messages. SnapBird is a free service. SnapBird Latest Features How-To Geek ETC Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The How-To Geek Valentine’s Day Gift Guide Inspire Geek Love with These Hilarious Geek Valentines MyPaint is an Open-Source Graphics App for Digital Painters Can the Birds and Pigs Really Be Friends in the End? [Angry Birds Video] Add the 2D Version of the New Unity Interface to Ubuntu 10.10 and 11.04 MightyMintyBoost Is a 3-in-1 Gadget Charger Watson Ties Against Human Jeopardy Opponents Peaceful Tropical Cavern Wallpaper

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• Network configuration problem with ubuntu

  - by Musti

  I am a new Ubuntu user. In my dorm there is a bit strange connection way for internet, I have to configure given "IP address, Subnetmask, Default gateway, Preferred DNS server, and Alternate DNS server" to have an internet connection, otherwise it is imposible. Actually it is very easy in windows, I am just opening Network and Sharing Center and then setting up TCP/IPv4. I had some attempt in Ubuntu, but just failed :/ Can anyone tell me how to configure? Thanks in advance... Musti

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• WiFi slow sometimes, reboot helps, how do I debug it?

  - by January

  Ubuntu 12.04.1 with all updates installed. Laptop Lenovo Thinkpad X230 with Intel Corporation Centrino Advanced-N 6205. WiFi sometimes becomes extremely slow. Often this occurs when I wake the system from suspend and connect to a different network. I find no obvious clues in system logs. /etc/init.d/network-manager restart doesn't help, but a reboot does. How can I go on with debugging this issue? In specific, which parts of the system should I try to restart (without a complete reboot)? I know of problems with Intel WiFi (see for example this question and the instructions here), but if that was the problem, I would expect the WiFi to be slow at all times, and not just sometimes. Also, I have a gut feeling that it might be a DNS issue (for example, getting a page from a known server is faster than accessing a new server), but I don't know how to tackle it. Update: despite numerous updates in the meanwhile, I still observe this behavior. It happens always when I access my WiFi router at home after returning from work; when I reboot my laptop, the connection speed is good again.

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• About cdn architecture to route way

  - by Tony Lee

  Our web system, use the third-party cdn service. Assume that the user set the local dns with the googledns or opendns to visit our web sites, so cdn service will select the closest cdn proxy node. all right, but in fact the user's actual access position might outside there, cdn service may chose the one furthest away from the user node, so static resource access slower.. At present, my idea is if user local set dns server with googledns, and then first one we get the actual ip address of the user, tracerote to test a best routing lines, set up a cookie in user browser, and then set 302 header for response to jump to the which best cdn node. Whether the user's browser side traceroute tool can provide the best route decision-making ? Because we find that, once the user to set local dns server with the foreign network segment, for example : set dns with 8.8.8.8, so cdn routing will choose the foreign service node.

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• connecting ubuntu with 7 via network cable

  - by VeXe

  i was tryin to connect my ubuntu toshiba satalite L650 laptop with my desktop via a network cable so that i can share things and remotely control the desktop from the laptop, i googled the problem out and found a guide page , i followed all the steps , i installed samba, i had the two computer have the same workgroup name , i had everything correct, but i still dont see connection estbalished between the two computers, (neither one is visible to the other) what is missing ? thanx in advance.

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• Advice on how to understand in general and in practice IT Infrastructure

  - by Luca

  My IT knowledge resides mainly in SW development. I have just some basic know how about networks. On the net I tried to get information and read books in order to better understand the overall IT infrastrcuture, but all the sources I found are too generic or, mainly, too detailed in just one aspect, making me lost. Could anyone suggest some books or web resources as good compromise in details? My goal would be able to understand the network issues and security threats when, for example, two remote system have to be setup and put in connection each other. Considering this scenario there are several aspects to consider: firewalls, intranet/internet interconnections, certificates for httpS, etc. The argument is quite wide, therefore I was looking for something that might help to start to understand this subject without going too deep in details (Computer Networks from A.Tanenbaum is a wonderful milestone, but way too specific for my scope). Thanks

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• How Does Windows Confirm Wi-Fi Access and Whether Hot Spot Authentication Is Necessary?

  - by Jason Fitzpatrick

  Windows is quite adept at telling you if you have a properly functioning Internet connection, but how exactly does it do so? Digging into how Windows handles the problem offers insight into Windows connectivity messages. 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. How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot Our Geek Trivia App for Windows 8 is Now Available Everywhere

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• Ethernet Wired Connection Help

  - by user107598

  I have recently installed Ubuntu 12.10 onto my Dell Inspiron N5010 and Ive been all over many forums trying to figure out how I can get my ethernet cable to be recognized so I can set up a wired connection. My Network Card is the Realtek RT8139 and from what Ive gathered the ethernet port driver for it is installed. Whenever I run ifconfig in the terminal it says that eth1 is up and running but no matter how I edit the connection I cannot get it to work. If anyone can help it would be greatly appreciated!

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• Can't access some websites using Ubuntu 13.10

  - by Adame Doe

  Something's wrong with Ubuntu. Since I've upgraded to 13.10, I can't access some websites for no apparent reason. I've tried everything imaginable to solve this problem : Made sure that MTUs are the same, Disabled IPv6 in both the network manager and used browsers, Deactivated my network keys, DMZed my computer, Used other DNS like Google and OpenDNS, Checked that no firewall was running my computer ... And it's the same result. I even tried to reinstall Ubuntu a couple of times, but no luck. The most annoying thing about it is I can't access wordpress.org! So, there's no way it could be an ISP restriction of some kind. When I use a VPN, I can access pretty much anything. I'm really frustrated because I have to use wordpress.org very often. Any clue? ifconfig adame@adame-ws:~$ ifconfig eth0 Link encap:Ethernet HWaddr 00:26:18:3d:b0:7c inet addr:10.42.0.1 Bcast:10.42.0.255 Mask:255.255.255.0 inet6 addr: fe80::226:18ff:fe3d:b07c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8024 errors:0 dropped:0 overruns:0 frame:0 TX packets:7966 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:684480 (684.4 KB) TX bytes:616608 (616.6 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:8222 errors:0 dropped:0 overruns:0 frame:0 TX packets:8222 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:568269 (568.2 KB) TX bytes:568269 (568.2 KB) wlan0 Link encap:Ethernet HWaddr 00:19:70:40:85:eb inet addr:192.168.2.3 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::219:70ff:fe40:85eb/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1464 Metric:1 RX packets:123705 errors:0 dropped:0 overruns:0 frame:0 TX packets:98141 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:94963545 (94.9 MB) TX bytes:10387470 (10.3 MB) /etc/hosts 127.0.0.1 localhost 127.0.1.1 adame-ws ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters tracepath wordpress.org 1: adame-ws.local 0.092ms pmtu 1500 1: 192.168.2.1 1.300ms asymm 2 1: 192.168.2.1 1.060ms asymm 2 2: no reply 3: no reply 4: no reply 5: no reply 6: no reply 7: no reply 8: no reply ... keep on going like that ping wordpress.org adame@adame-ws:~$ ping wordpress.org PING wordpress.org (66.155.40.250) 56(84) bytes of data. --- wordpress.org ping statistics --- 10 packets transmitted, 0 received, 100% packet loss, time 9071ms

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• Connection timed out when connecting to a website (ubuntu only)

  - by S.C.

  I've been struggling with these problem for months. It happens randomly and it happens on Ubuntu only (12.04). It's about my hosted company website. Some facts: I can ping it I can traceroute it I can dig it I can make a nslookup But whenever I try to open it in Chrome it won't open. I also tried using polipo but got same connection time out issue. I'm connected through a LAN network and I'm experiencing no problem with any other website. Is there a more accurate debugging technique I'm missing other than pinging/tracerouting, etc.?

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• Internet unusably slow with Realtek Semiconductor Co., Ltd. RTL8111/8168B card

  - by user42424

  So I have recently installed Ubuntu 11.10 for a dual boot with wind 7. After the install I had like 300 updates, so I installed them. At first I could use the internet, although it was extremely slow. However now I cannot, sometimes it will load and others it will simply time out. When I try to download something it will either take forever or will not at all. This is a wired system. On Windows side my speeds are fine. Any help would be greatly appreciated. Also like I said I am new to Linux/Ubuntu so please be nice. One last thing, I also installed 11.10 for same dual boot on my laptop, and wireless speed is the same as on Windows? Only the wired desktop gives me the problem? Hear is some hardware info.. Hope it helps. Mobo: Gigabyte GA=880GMA- AMD / CPU: AMD Phenom (tm) IIx4 965 / 16 GB Ram / Realtek PCIe GBE Family Controller / Cisco Linksys E2000 / Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) / eth0 Link encap:Ethernet HWaddr 50:e5:49:33:64:cf inet addr:192.168.1.118 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::52e5:49ff:fe33:64cf/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:76722 errors:0 dropped:76722 overruns:0 frame:76722 TX packets:49692 errors:0 dropped:65 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:107956638 (107.9 MB) TX bytes:4342553 (4.3 MB) Interrupt:44 Base address:0x2000 thanks to roadmr problem solved! I powered down PC, un plugged power from pc end, waited a few (maybe 3)minutes. plugged power back in, pushed and held power button for 30 + seconds. Let go, powered on PC, and my Internet is fine! downloads and web speed blaze, just like on my Win 7 boot, maybe even faster. Problem Solved, Thanks to all!! **

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• WiFi AdHoc Network: Unable to access peer by ip

  - by Pranav

  I've set up a WiFi AdHoc network in Maverick and selected the IPv4 settings as "Shared to other computers". On the client computer, I joined the network with the same SSID and set IPv4 method to Manual and I gave it an IP 10.42.43.2 (As on the first computer, the auto generated IP was 10.42.43.1). From either of the computers, I'm not able to access the other using the IP (in browser). Any idea why? (If I browse to 10.42.43.1 from the first computer, it works) Thanks!

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• Network print to brother MFC-7420

  - by trampster

  I am trying to pint to a Brother MFC-7420 from my ubuntu 10.04 machine. The brother is attached to a windows XP machine and is shared. This is what I have tried: System-Administration-Printing, Add, Expand Network Printer, Windows Printer via SAMBA, Browse (I can find the printer no problems here), Foward, Choose Driver Dialog, Brother, My printer is not in this list So the next thing I tried was to download the printer driver from here http://welcome.solutions.brother.com/bsc/public_s/id/linux/en/download_prn.html The driver installed fine but my printer still does not appear in the list. I also tried installing the cups wrapper but that gave the following error. Restarting Common Unix Printing System: cupsd [ OK ] cp: cannot stat `/usr/share/cups/model/MFC7420.ppd': No such file or directory dpkg: error processing cupswrappermfc7420 (--install): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: cupswrappermfc7420 I tried connecting the printer directly but even though I have installed the driver, when I go to printers and click on the printer (it shows up fine as a USB printer) then it say searching for drivers and then gives me a list, this is the same list as before which doesn't have my printer. It really shouldn't be this hard. on window you don't have to installing anything it just works and the same is true for my brothers Mac. How do I print to my printer?

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• How to insert in a blog sharing links to visitors Tweet, Facebook and so on social networks?

  - by Andry

  I am developing a web blog using ASP.NET, but I guess that the tech details like this, here, is not important. My aim is to insert in every post I create those nice buttons to the social networks account of my visitors so that they can quote or post the link to the blog entry in their space. How can I do this? I guess it also de3pend on the social network I want to use. Lets say, now, that I want to have links to Facebook, Tweet and Google circle accounts. Thankyou.

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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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• Putting Ubuntu Server on to a networked HDD

  - by SimplySimon

  Firstly, I know very little about servers and secondly the 1Tb HDD I have has network capabilities, but no software is installed on it, so when connected to the computer it is seen as a network connection, but not as a drive. Any advice on how to get started would be great. Up until now, I have been using it as a USB drive which worked well, but when this is sorted, I would like it to be connected directly to our BT HomeHub accessible through the WiFi for all the family to use as a film and back up repository. I would then be able to set up individual accounts for each family member to use and may be, if possible, make it accessible from outside locations. The First question then is: How can I install Ubuntu server on the 1Tb HDD attached directly to the computers network port but which doesn't show up in Nautilus? HDD Western Digital 1.0Tb LBA 1953525168 Model: WD10EACS-00DB0 DCM: DHRNHT2CF

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• What are the advantages and Disadvantages of Using an Aspect Orientated Programming Paradigm

  - by JHarley1

  Ok so here is the question: What are the advantages and Disadvantages of Using an Aspect Orientated Programming Paradigm. My advantages and disadvantages thus far: Advantages: Complements object orientation. Modularizes cross-cutting concerns improving code maintainability and understandability. Disadvantage: Not the easiest of concepts to grasp - not as well documented as O-O O-O goes far enough in the separation of concerns... List item Would anyone like to challenge any of these/ add their own? Many Thanks, J

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• Connection to openVPN Access Server

  - by Beig

  we are using an openVPN Access Server and I would like to connect to it via the VPN network setting (network-manager-openvpn). I downloaded the client.ovpn and I can connect to the server via the command line: openvpn --script-security 2 --config client.ovpn How can I add the connection to the network manager? Which (key) entry is which? User Cert, CA Cert, Private Key? Here is an example of the client.ovpn http://nopaste.info/c10ec207f2.html Thanks in advance.

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• Best strategy to discover a web service in a local network?

  - by Ucodia

  I am currently doing some research for a project. The setup is simple, I have a computer running a service in my home network and any device connected to that same network should be able to discover the service automatically and use it. I have no specific technology requirement whether it is on the server or client side. The client knows about the service definition. Other than that I have no idea what strategy to use, what technology to look at or whether I should go for a SOAP or a HTTP based service. I think going HTTP with REST API is the best for targeting all devices but I am opened to any suggestions. Thanks.

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• How to connect ethernet on ubuntu (with auto-detection by Ubuntu)

  - by user12285

  Do I need to post another thread for the same? If so, sorry. Yes, I saw that it's been well over six months but I have the same router SmartAX MT880d with ethernet, and the exact same problem, that is no internet even though I can successfully reach the modem settings page by entering 192.168.1.1 in Firefox. Sorry if I don't use the right (technical) terminology to express my issue. English is not my mother tongue. I'm a total beginner with ubuntu. My internet works great in Windows but does not work in Ubuntu. For 2 weeks, I've kept reading on the web and forums and the ubuntuguide.org to name a few but to no avail. Now I see no other solution but to ask for help. My problem is that as a beginner, I can't find a way to put the right digits in the right place because I don't know what numbers I need to put in what files (eg: do I need to use DHCP? or a static IP address? No clue whatsoever. I'm confused between putting figures in the wrong spaces. For example, is the modem/router's IP exactly 192.168.1.1 for Huawei Smart AXMT880d modem?? Is the subnet 255.255.255.0? Gateway 192.168.1.1. I'm confused as I can also see a different IP starting with 155131*** (is it an account number? no clue again) on my contract with Huawei (a Chinese ISP). Apart from calling 911, what other numbers do I need to put in and where? How do I check that all the numbers have been entered correctly in every appropriate space before trying to connect the Internet?

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