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  • Why won't my Nokia E52 charge on some USB ports

    - by snot
    I have two computers. If I connect my Nokia to one of them using the usb cable the charge process will start. If I connect the phone to the other computer (using the same cable!) it won't start charging. Any suggestions what the problem is? (I couldn't find a usb related difference between both computers)

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  • HOSTS ignored when disconnected [closed]

    - by Synetech
    Problem I’m seeing a strange and extremely frustrating problem. Any system that is not connect to the Internet (Windows 7 shows the no Internet access icon because it cannot constantly ping Microsoft’s servers) cannot even access locally hosted servers. Hypothesis The problem appears to be that the HOSTS file is not being used to resolve DNS entries when there are no active NICs. Tests / Reproduction You can reproduce it as so: Disconnect a system from the Internet (make sure all wired and wireless connections are disconnected). If necessary, add an entry to the HOSTS file (e.g., 127.0.0.1 foobar or 127.0.0.1 foobar.com) Open a command-prompt Type ping foobar or ping foobar.com Observations The screenshots below show a clear and demonstrative example. In the first snap, a laptop is connected to a router wirelessly. The HOSTS file has only three entries and they resolve just fine. In the second snap, the wireless radio is turned off, so the entries in the HOSTS file are ignored. Moreover, notice that pinging localhost still works even without any active NICs (as does 127.0.0.1), but it is using the IPv6 address (must be hard-coded). You can see the same results in Windows XP with no IPv6 installed, so it has nothing to do with IPv6. I tried pining what should have resolved to 127.0.0.1 while the desktop system (with no wireless NICs) was connected via its Ethernet adapter, then again after pulling the cable from the router and waiting a couple of seconds, then again after plugging the cable back in. The same thing happens if instead of pulling out the cable, the NIC is disabled through software (the [Disable] button in the NIC’s Status dialog or via Device Manager). Conclusions It looks as though the HOSTS file is only being read and used if there is an active NIC, otherwise it is being ignored. This makes some sense in that if there are no active network adapters, then presumably there will not be any network activity, and thus no need to resolve host names via the HOSTS file. This assumption is specious however because it precludes locally hosted virtual servers. The HOSTS file should be used regardless of external DNS server connectivity, otherwise you cannot use simple/consistent/testing-production names for locally hosted servers when not connected to the Internet (for example web servers; help servers for Visual Studio, 3dsmax, etc.; and so on). Question Does anyone know how to force Windows to use the HOSTS file even if there are no active NICs? Appendix Figure 1: While the wireless NIC is connected to the router (the cable-modem is in standby, so no external Internet connectivity). Figure 2: With the wireless radio turned off (the Ethernet port is not unconnected in both cases). Figure 3: Same results in XP with no IPv6

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  • Looking for a fiber optic "switch" or "router" for home use

    - by Shrout1
    The gist of my question: What is a "fiber optic" switch called? I.E. a layer 2 ethernet switch that uses fiber TX and RX connections and sends layer 2 network traffic between the fiber strands that are connected. Can someone purchase a dedicated fiber switch that does not have copper ethernet ports? What is the current average price of a device like this? Not necessarily looking for product endorsements, just information Might not make sense to go this route if it is too cost prohibitive What type of fiber connector is used for terminating a fiber strand into a jack on the wall? Can fiber be "patched" using two jacks and a "patch" cable? Is signal loss a concern with the longest runs at 100-200ft, a patch cable and media converters? The full story: My parents had unterminated fiber optic cable and terminated Cat5e run throughout their home when it was built in 2004. 10 years later the Cat5e isn't providing the throughput that my father needs to accomplish multiple streams of HD and fast system backups throughout the house. He can't reach gigabit speeds across the distance of the Cat5e runs. We are both interested in terminating the fiber connections and using them as high speed "backbones" to copper switches in each room of the house. It would be easy to attain gigabit speeds (or better, eventually) using the fiber. I have searched and searched for a "fiber optic switch" or "fiber optic router" and cannot find the correct term to describe this piece of hardware. We can use fiber media converters at the end points of each connection, however it would be nice to have a "patch panel" set up in the network closet in the basement that has fiber connections on it and switches the ethernet streams between the connections/systems in the house. Each fiber media converter costs between $50-$100 a piece... After 10 or so terminated connections it might make sense to find a piece of hardware that does not require media converters. That would depend upon the cost of this hardware Somewhat unrelated, if we are able to route between these fiber strands successfully, what is the physical connector type used in a jack on the wall? Just like RJ45 has a wall outlet (depicted below): What is the fiber optic equivalent of this? In the interim could we "patch" a couple fiber strands together in the network closet? Would signal loss be of concern with a run length of 100-200 feet, a patch cable and two media converters? If that would work then it could be used until the funds are available for more.

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  • cisco ePC 3208 router and captive portal

    - by Dejan Milosevic
    Ok, i have cisco ePC 3208 router, and cable internet goes in router via cable and router is emiting wireless. It can work without computer and it is working fine. Now i want to have capiteve portal with home page for my buisness and user logins. Is it possible that i use computer as gateway for captive portal, so when user goes to wireless it will redirected to computer local server for authorization and then passed by if user and pass is good, or i need another router or wifi acess point?

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  • Sharing Internet Connection

    - by user36852
    Hi :) I have a Cable Internet (Assigned IP etc) to connect to internet and I want to connect another computer to same line of cable as well. Both in Same room. Any suggestion, affordable solution please?

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  • apcupsd on Linux does not report on APC BackUPS Pro 900

    - by lserni
    From what documentation I could find, the UPS should be (is!) supported by Linux and ought to work with apcupsd. I looked for specific problems such as the infamous Microlink protocol, and found none. I have found a feedback from a guy in UK that reports using this very model on a not-too-different OS version (his OpenSuSE 12.1, mine 12.3 x86_64). The USB port is detected, lsusb reports Bus 002 Device 003: ID 051d:0002 American Power Conversion Uninterruptible Power Supply and lsusb -v -s002:003 confirms and expands: Bus 002 Device 003: ID 051d:0002 American Power Conversion Uninterruptible Power Supply Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x051d American Power Conversion idProduct 0x0002 Uninterruptible Power Supply bcdDevice 0.90 iManufacturer 1 American Power Conversion iProduct 2 Back-UPS RS 900G FW:879.L4 .I USB FW:L4 bNumConfigurations 1 Configuration Descriptor: [...] Interface Descriptor: [...] bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 No Subclass bInterfaceProtocol 0 None iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.00 bCountryCode 33 US bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 1134 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 100 Device Status: 0x0000 (Bus Powered) The kernel recognizes this and duly sets up crw------- 1 root root 180, 96 Nov 4 16:11 /dev/usb/hiddev0 As far as I know, everything is as it should be. I have put the standard configuration in /etc/apcupsd/apcupsd.conf (which is Unix-terminated, ASCII-only, no BOM (just in case)) UPSCABLE usb UPSTYPE usb DEVICE (I have also tried commenting out DEVICE, and setting a device of /dev/puppa results in an access attempt to /dev/puppa, not some /var/lib/dev/puppa or /dev/puppa\r\n). Yet, what apcaccess tells me is VERSION : 3.14.10 (13 September 2011) suse CABLE : USB Cable DRIVER : USB UPS Driver UPSMODE : Stand Alone STARTTIME: 2013-11-04 16:24:22 +0100 MODEL : STATUS : NOBATT LINEV : 000.0 Volts LOADPCT : 0.0 Percent Load Capacity BCHARGE : 000.0 Percent TIMELEFT : 0.0 Minutes MBATTCHG : 5 Percent MINTIMEL : 3 Minutes MAXTIME : 0 Seconds SENSE : Low LOTRANS : 000.0 Volts HITRANS : 000.0 Volts It doesn't recognize the model, and reports no battery (and no voltage). This confirms that it's not the Microlink problem, or it would report the battery status, if precious little else. If I disconnect the USB cable, I get an apcupsd message to the effect that communications have been lost; and I get the "communication restored" broadcast too, if I reconnect the cable. apcupsd is monitoring. So everything tells me that it should work -- only it doesn't. Does anyone spot what I'm missing?

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  • When a server gets rooted, should I disconnect network or power?

    - by Aleksandr Levchuk
    When a server gets rooted (e.g. a situation like this), one of the first things that should be done is containment. Quoting from Robert Moir's Answer: "disconnect the victim from its muggers" A server can be contained by pulling the network cable or the power cable. Taking into consideration the need for: Protecting victims from further damage Executing successful forensics (Possibly) Protecting valuable data on the server Which method is better?

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  • MacBook (13 in. Aluminum late 08) power adapter starting to fail

    - by Mr. Man
    I have a MacBook (Late '08 13 In. Aluminum) with the Apple provided power adapter. I think it may be failing because It takes a little moving around with the cable nearest where it connects to the MacBook to get it to charge (small light turns on). The area of cable nearest the MacBook gets very hot, almost burning. Any ideas of how I could fix it? Hopefully without replacing the adapter. Thanks in advance!

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  • Computer doesn't boot with Entertainmen Keyboard 8000?

    - by Smetad Anarkist
    I have a Microsoft Wireless Entertainment Keyboard 8000, and when the charger/usb-hub is connected, the computer won't start. All I get is the bios boot screen, and it won't go further. But if I disconnect either the usb-cable or the power-cable to the charger the computer boots normally. Any suggestions as to what's causing this behaviour? I've tried the charger on two different computers with the same result.

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  • Creating a network link between 2 very close buildings

    - by Daniel Johnson
    I have a charity who have two adjacent medium sized modern detached houses (in the UK): the buildings stand next to each other and are less than 5 metres apart. They have DSL connected to a single computer in one of the buildings. They want to add a network with wireless, and want it to work across both buildings. Being a charity they need to keep costs down. The network would be used for sharing Word documents, e-mail, browsing and skyping. My initial thoughts were to connect the buildings with fibre. So: Option 1 Use fibre between the buildings. Sufficient cable and two TP-LINK MC100CM Fast Ethernet Media Converters. Cost ~£80.00. But there is the extra cost and hassle of running the cable down and up the external walls, lifting and relaying paving, and burying underground. Never having fitted fibre I'm also a little worried about going up the wall and then bending the cable at 90 degrees to go through the wall and into the building. Option 2 Use two TP-Link TL-WA7510N High Powered Outdoor 5Ghz 15dBi Wireless antennas to connect the buildings. There is a clear line of sight at first floor level. Cost ~£100. And much easier to fit than fibre! Is using the TL-WA7510Ns overkill? Is there something more suitable? I had hoped to use some Netgear stuff, e.g. two DGN2200, one in each house and also use them to provide the wireless link between the buildings. However, in bridge mode wireless client association is not available and repeater mode with client association only supports WEP security which isn't strong enough. Is there something similar that would be up to the job? Option 3 Connect the buildings with UTP cable. My concerns here are risk of electric shock due to a difference of potential between the buildings (or are they so close this shouldn't be an issue) and protection from lightning strikes. Is fitting lighting arrestors expensive? And what can be done to ameliorate against the risk of shock? This all falls outside my area of expertise so I would really appreciate some advice.

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  • IDE hard drive and a SATA Dock

    - by admintech
    I bought a very nice SATA dock for my computer, plug and play and you just plug the drive into the dock and you can access the data. I have since then found an IDE drive i wish to access, but cant figure out how to do it, as i would guess i need, one cable converting IDE to SATA and one cable to plug it into a SATA power connection. Dock = http://tiny.cc/dc5ie

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  • Nokia PC Suite hangs at installing required drivers and doesn't connect to phone

    - by SpongeBob SquarePants
    I am unable to connect my Nokia 2690 to my PC via data cable using Nokia PC Suite under Windows XP SP3 Pro 32 bit. Every time I connect my mobile using the data cable, the Nokia App shows a window where it says it's "Installing the required drivers. Please wait". But even after several hours my phone never conects to my PC and the screen remains there idle. I checked in he task manager, Nokia PC Suite didn't go unresponsive.

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  • Hp pavilion dv7 power button

    - by Danny B
    My power button is non responsive I am getting LED for charging. I've taken it apart before to change the dc jack and it was fine and a few months later it just powered off. I try to power back on and is goes to start up then shuts off. I just took it apart and came to find the ribbon cable connecting the power button/speakers cover is barely hanging on do I have to replace the whole thing or is there a way to replace the ribbon cable?

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  • Spring-security not processing pre/post annotations

    - by wuntee
    Trying to get pre/post annotations working with a web application, but for some reason nothing is happening with spring-security. Can anyone see what im missing? web.xml contextConfigLocation /WEB-INF/rvaContext-business.xml /WEB-INF/rvaContext-security.xml <context-param> <param-name>log4jConfigLocation</param-name> <param-value>/WEB-INF/log4j.properties</param-value> </context-param> <!-- Spring security filter --> <filter> <filter-name>springSecurityFilterChain</filter-name> <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class> </filter> <filter-mapping> <filter-name>springSecurityFilterChain</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- - Publishes events for session creation and destruction through the application - context. Optional unless concurrent session control is being used. --> <listener> <listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class> </listener> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <servlet> <servlet-name>rva</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>rva</servlet-name> <url-pattern>/rva/*</url-pattern> </servlet-mapping> rvaContext-secuity.xml: <?xml version="1.0" encoding="UTF-8"?> <beans:beans xmlns="http://www.springframework.org/schema/security" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd"> <global-method-security pre-post-annotations="enabled"/> <http use-expressions="true"> <form-login /> <logout /> <remember-me /> <!-- Uncomment to limit the number of sessions a user can have --> <session-management invalid-session-url="/timeout.jsp"> <concurrency-control max-sessions="1" error-if-maximum-exceeded="true" /> </session-management> <form-login login-page="rva/login" /> </http> ... LoginController class: @Controller @RequestMapping("/login") public class LoginController { @RequestMapping(method = RequestMethod.GET) public String login(ModelMap map){ map.addAttribute("title", "Login: AD Credentials"); return("login"); } @RequestMapping("/secure") @PreAuthorize("hasRole('ROLE_USER')") public String secure(ModelMap map){ return("secure"); } } In the logs, there is nothing even related to spring-security: logs: INFO: Initializing Spring FrameworkServlet 'rva' INFO [org.springframework.web.servlet.DispatcherServlet] - FrameworkServlet 'rva': initialization started INFO [org.springframework.web.context.support.XmlWebApplicationContext] - Refreshing WebApplicationContext for namespace 'rva-servlet': startup date [Fri Mar 26 10:28:51 MDT 2010]; parent: Root WebApplicationContext INFO [org.springframework.beans.factory.xml.XmlBeanDefinitionReader] - Loading XML bean definitions from ServletContext resource [/WEB-INF/rva-servlet.xml] INFO [org.springframework.beans.factory.support.DefaultListableBeanFactory] - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@a2fc31: defining beans [loginController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,freemarkerConfig,viewResolver]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@cc74e7 INFO [org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer] - ClassTemplateLoader for Spring macros added to FreeMarker configuration INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/login/secure] onto handler [com.cable.comcast.neto.nse.rva.controller.LoginController@79b32a] INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/login/secure.*] onto handler [com.cable.comcast.neto.nse.rva.controller.LoginController@79b32a] INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/login/secure/] onto handler [com.cable.comcast.neto.nse.rva.controller.LoginController@79b32a] INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/login] onto handler [com.cable.comcast.neto.nse.rva.controller.LoginController@79b32a] INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/login.*] onto handler [com.cable.comcast.neto.nse.rva.controller.LoginController@79b32a] INFO [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping] - Mapped URL path [/login/] onto handler [com.cable.comcast.neto.nse.rva.controller.LoginController@79b32a] INFO [org.springframework.web.servlet.DispatcherServlet] - FrameworkServlet 'rva': initialization completed in 417 ms Mar 26, 2010 10:28:52 AM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8080 Mar 26, 2010 10:28:52 AM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Mar 26, 2010 10:28:52 AM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/31 config=null Mar 26, 2010 10:28:52 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 1873 ms WARN [org.springframework.web.servlet.PageNotFound] - No mapping found for HTTP request with URI [/rva-web/] in DispatcherServlet with name 'rva'

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  • Simple hardware RNG

    - by roygbiv
    I made a tongue-in-cheek comment to this question about making a hardware RNG. Does anyone know of any simple plans or can anyone descibe a simple hardware based RNG and the software to drive it? Go to Radio Shack. Buy a diode, an NTR resistor, a capacitor and serial cable. Cut off the end of the serial cable that does not fit on your computer. Solder the diode and resistor in series between pins DTR and DSR of the cable. Solder the capacitor between DSR and TXD pins. Write a small C program to do the following: Set DTR to 1. Start Timer. Monitor DSR until it goes to 1. Stop Timer. Calculate resistance from elapsed time. Retreive serveral bits from that value to use as part of random number. Repeat until enough bits have accumulated.

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  • Does all the network card use the same frequency to send signals to wire?

    - by smwikipedia
    Hi, I am comparing my cable TV wire to my network wire. In a TV cable wire, different frequencies are used by different TV channels. And since a certain channel use a fixed frequency, I think the only left way to represent different signal is with the carrier wave's amplitude. But what about the network wire? For all the network card with the same type, do they also use different frequencies to send signals just like TV cable? I vaguely remember that they use frequency adjustment to represent signals. So the frequency should not be a fixed one. So how did all the network cards that sharing the same medium differentiate their own signal from others?

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  • How to Reuse Your Old Wi-Fi Router as a Network Switch

    - by Jason Fitzpatrick
    Just because your old Wi-Fi router has been replaced by a newer model doesn’t mean it needs to gather dust in the closet. Read on as we show you how to take an old and underpowered Wi-Fi router and turn it into a respectable network switch (saving your $20 in the process). Image by mmgallan. Why Do I Want To Do This? Wi-Fi technology has changed significantly in the last ten years but Ethernet-based networking has changed very little. As such, a Wi-Fi router with 2006-era guts is lagging significantly behind current Wi-Fi router technology, but the Ethernet networking component of the device is just as useful as ever; aside from potentially being only 100Mbs instead of 1000Mbs capable (which for 99% of home applications is irrelevant) Ethernet is Ethernet. What does this matter to you, the consumer? It means that even though your old router doesn’t hack it for your Wi-Fi needs any longer the device is still a perfectly serviceable (and high quality) network switch. When do you need a network switch? Any time you want to share an Ethernet cable among multiple devices, you need a switch. For example, let’s say you have a single Ethernet wall jack behind your entertainment center. Unfortunately you have four devices that you want to link to your local network via hardline including your smart HDTV, DVR, Xbox, and a little Raspberry Pi running XBMC. Instead of spending $20-30 to purchase a brand new switch of comparable build quality to your old Wi-Fi router it makes financial sense (and is environmentally friendly) to invest five minutes of your time tweaking the settings on the old router to turn it from a Wi-Fi access point and routing tool into a network switch–perfect for dropping behind your entertainment center so that your DVR, Xbox, and media center computer can all share an Ethernet connection. What Do I Need? For this tutorial you’ll need a few things, all of which you likely have readily on hand or are free for download. To follow the basic portion of the tutorial, you’ll need the following: 1 Wi-Fi router with Ethernet ports 1 Computer with Ethernet jack 1 Ethernet cable For the advanced tutorial you’ll need all of those things, plus: 1 copy of DD-WRT firmware for your Wi-Fi router We’re conducting the experiment with a Linksys WRT54GL Wi-Fi router. The WRT54 series is one of the best selling Wi-Fi router series of all time and there’s a good chance a significant number of readers have one (or more) of them stuffed in an office closet. Even if you don’t have one of the WRT54 series routers, however, the principles we’re outlining here apply to all Wi-Fi routers; as long as your router administration panel allows the necessary changes you can follow right along with us. A quick note on the difference between the basic and advanced versions of this tutorial before we proceed. Your typical Wi-Fi router has 5 Ethernet ports on the back: 1 labeled “Internet”, “WAN”, or a variation thereof and intended to be connected to your DSL/Cable modem, and 4 labeled 1-4 intended to connect Ethernet devices like computers, printers, and game consoles directly to the Wi-Fi router. When you convert a Wi-Fi router to a switch, in most situations, you’ll lose two port as the “Internet” port cannot be used as a normal switch port and one of the switch ports becomes the input port for the Ethernet cable linking the switch to the main network. This means, referencing the diagram above, you’d lose the WAN port and LAN port 1, but retain LAN ports 2, 3, and 4 for use. If you only need to switch for 2-3 devices this may be satisfactory. However, for those of you that would prefer a more traditional switch setup where there is a dedicated WAN port and the rest of the ports are accessible, you’ll need to flash a third-party router firmware like the powerful DD-WRT onto your device. Doing so opens up the router to a greater degree of modification and allows you to assign the previously reserved WAN port to the switch, thus opening up LAN ports 1-4. Even if you don’t intend to use that extra port, DD-WRT offers you so many more options that it’s worth the extra few steps. Preparing Your Router for Life as a Switch Before we jump right in to shutting down the Wi-Fi functionality and repurposing your device as a network switch, there are a few important prep steps to attend to. First, you want to reset the router (if you just flashed a new firmware to your router, skip this step). Following the reset procedures for your particular router or go with what is known as the “Peacock Method” wherein you hold down the reset button for thirty seconds, unplug the router and wait (while still holding the reset button) for thirty seconds, and then plug it in while, again, continuing to hold down the rest button. Over the life of a router there are a variety of changes made, big and small, so it’s best to wipe them all back to the factory default before repurposing the router as a switch. Second, after resetting, we need to change the IP address of the device on the local network to an address which does not directly conflict with the new router. The typical default IP address for a home router is 192.168.1.1; if you ever need to get back into the administration panel of the router-turned-switch to check on things or make changes it will be a real hassle if the IP address of the device conflicts with the new home router. The simplest way to deal with this is to assign an address close to the actual router address but outside the range of addresses that your router will assign via the DHCP client; a good pick then is 192.168.1.2. Once the router is reset (or re-flashed) and has been assigned a new IP address, it’s time to configure it as a switch. Basic Router to Switch Configuration If you don’t want to (or need to) flash new firmware onto your device to open up that extra port, this is the section of the tutorial for you: we’ll cover how to take a stock router, our previously mentioned WRT54 series Linksys, and convert it to a switch. Hook the Wi-Fi router up to the network via one of the LAN ports (consider the WAN port as good as dead from this point forward, unless you start using the router in its traditional function again or later flash a more advanced firmware to the device, the port is officially retired at this point). Open the administration control panel via  web browser on a connected computer. Before we get started two things: first,  anything we don’t explicitly instruct you to change should be left in the default factory-reset setting as you find it, and two, change the settings in the order we list them as some settings can’t be changed after certain features are disabled. To start, let’s navigate to Setup ->Basic Setup. Here you need to change the following things: Local IP Address: [different than the primary router, e.g. 192.168.1.2] Subnet Mask: [same as the primary router, e.g. 255.255.255.0] DHCP Server: Disable Save with the “Save Settings” button and then navigate to Setup -> Advanced Routing: Operating Mode: Router This particular setting is very counterintuitive. The “Operating Mode” toggle tells the device whether or not it should enable the Network Address Translation (NAT)  feature. Because we’re turning a smart piece of networking hardware into a relatively dumb one, we don’t need this feature so we switch from Gateway mode (NAT on) to Router mode (NAT off). Our next stop is Wireless -> Basic Wireless Settings: Wireless SSID Broadcast: Disable Wireless Network Mode: Disabled After disabling the wireless we’re going to, again, do something counterintuitive. Navigate to Wireless -> Wireless Security and set the following parameters: Security Mode: WPA2 Personal WPA Algorithms: TKIP+AES WPA Shared Key: [select some random string of letters, numbers, and symbols like JF#d$di!Hdgio890] Now you may be asking yourself, why on Earth are we setting a rather secure Wi-Fi configuration on a Wi-Fi router we’re not going to use as a Wi-Fi node? On the off chance that something strange happens after, say, a power outage when your router-turned-switch cycles on and off a bunch of times and the Wi-Fi functionality is activated we don’t want to be running the Wi-Fi node wide open and granting unfettered access to your network. While the chances of this are next-to-nonexistent, it takes only a few seconds to apply the security measure so there’s little reason not to. Save your changes and navigate to Security ->Firewall. Uncheck everything but Filter Multicast Firewall Protect: Disable At this point you can save your changes again, review the changes you’ve made to ensure they all stuck, and then deploy your “new” switch wherever it is needed. Advanced Router to Switch Configuration For the advanced configuration, you’ll need a copy of DD-WRT installed on your router. Although doing so is an extra few steps, it gives you a lot more control over the process and liberates an extra port on the device. Hook the Wi-Fi router up to the network via one of the LAN ports (later you can switch the cable to the WAN port). Open the administration control panel via web browser on the connected computer. Navigate to the Setup -> Basic Setup tab to get started. In the Basic Setup tab, ensure the following settings are adjusted. The setting changes are not optional and are required to turn the Wi-Fi router into a switch. WAN Connection Type: Disabled Local IP Address: [different than the primary router, e.g. 192.168.1.2] Subnet Mask: [same as the primary router, e.g. 255.255.255.0] DHCP Server: Disable In addition to disabling the DHCP server, also uncheck all the DNSMasq boxes as the bottom of the DHCP sub-menu. If you want to activate the extra port (and why wouldn’t you), in the WAN port section: Assign WAN Port to Switch [X] At this point the router has become a switch and you have access to the WAN port so the LAN ports are all free. Since we’re already in the control panel, however, we might as well flip a few optional toggles that further lock down the switch and prevent something odd from happening. The optional settings are arranged via the menu you find them in. Remember to save your settings with the save button before moving onto a new tab. While still in the Setup -> Basic Setup menu, change the following: Gateway/Local DNS : [IP address of primary router, e.g. 192.168.1.1] NTP Client : Disable The next step is to turn off the radio completely (which not only kills the Wi-Fi but actually powers the physical radio chip off). Navigate to Wireless -> Advanced Settings -> Radio Time Restrictions: Radio Scheduling: Enable Select “Always Off” There’s no need to create a potential security problem by leaving the Wi-Fi radio on, the above toggle turns it completely off. Under Services -> Services: DNSMasq : Disable ttraff Daemon : Disable Under the Security -> Firewall tab, uncheck every box except “Filter Multicast”, as seen in the screenshot above, and then disable SPI Firewall. Once you’re done here save and move on to the Administration tab. Under Administration -> Management:  Info Site Password Protection : Enable Info Site MAC Masking : Disable CRON : Disable 802.1x : Disable Routing : Disable After this final round of tweaks, save and then apply your settings. Your router has now been, strategically, dumbed down enough to plod along as a very dependable little switch. Time to stuff it behind your desk or entertainment center and streamline your cabling.     

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  • Everytime i am trying to connect to my box using SSH, its failing not connecting

    - by YumYumYum
    From any other PC doing SSH to my Ubuntu 11.10,is failing. My network setup: Telenet ISP (Belgium) Fiber cable < RJ45 cable straight to Ubuntu PC Even the SSH is running: Other PC: retrying over and over $ ping 192.168.0.128 PING 192.168.0.128 (192.168.0.128) 56(84) bytes of data. From 192.168.0.226 icmp_seq=1 Destination Host Unreachable From 192.168.0.226 icmp_seq=2 Destination Host Unreachable From 192.168.0.226 icmp_seq=3 Destination Host Unreachable From 192.168.0.226 icmp_seq=4 Destination Host Unreachable $ sudo service iptables stop Stopping iptables (via systemctl): [ OK ] $ ssh [email protected] ssh: connect to host 192.168.0.128 port 22: No route to host $ ssh [email protected] ssh: connect to host 192.168.0.128 port 22: No route to host $ ssh [email protected] ssh: connect to host 192.168.0.128 port 22: No route to host $ ssh [email protected] ssh: connect to host 192.168.0.128 port 22: No route to host $ ssh [email protected] Connection closed by 192.168.0.128 $ ssh [email protected] [email protected]'s password: Connection closed by UNKNOWN $ ssh [email protected] ssh: connect to host 192.168.0.128 port 22: No route to host $ ssh [email protected] ssh: connect to host 192.168.0.128 port 22: No route to host Follow up: -- checked cable -- using cable tester and other detectors -- no problem found in cable -- used random 10 cables -- adapter is not broken -- checked it using circuit tester by opening the system (card is new so its not network adapter card problem) -- leds are OK showing -- used LiveCD and did same ping test was having same problem -- disabled ipv6 100% to make sure its not the cause -- disabled iptables 100% so its also not the issue -- some more info $ nmap 192.168.0.128 Starting Nmap 5.50 ( http://nmap.org ) at 2012-06-08 19:11 CEST Nmap scan report for 192.168.0.128 Host is up (0.00045s latency). All 1000 scanned ports on 192.168.0.128 are closed (842) or filtered (158) Nmap done: 1 IP address (1 host up) scanned in 6.86 seconds ubuntu@ubuntu:~$ netstat -aunt | head Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN tcp 0 1 192.168.0.128:58616 74.125.132.99:80 FIN_WAIT1 tcp 0 0 192.168.0.128:56749 199.7.57.72:80 ESTABLISHED tcp 0 1 192.168.0.128:58614 74.125.132.99:80 FIN_WAIT1 tcp 0 0 192.168.0.128:49916 173.194.65.113:443 ESTABLISHED tcp 0 1 192.168.0.128:45699 64.34.119.101:80 SYN_SENT tcp 0 0 192.168.0.128:48404 64.34.119.12:80 ESTABLISHED tcp 0 0 192.168.0.128:54161 67.201.31.70:80 TIME_WAIT $ sudo killall dnsmasq -- did not solved the problem -- -- like many other Q/A was suggesting this same --- $ iptables --list 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 $ netstat -nr Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 $ ssh -vvv [email protected] OpenSSH_5.6p1, OpenSSL 1.0.0j-fips 10 May 2012 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 192.168.0.128 [192.168.0.128] port 22. debug1: Connection established. debug3: Not a RSA1 key file /home/sun/.ssh/id_rsa. debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /home/sun/.ssh/id_rsa type 1 debug1: identity file /home/sun/.ssh/id_rsa-cert type -1 debug1: identity file /home/sun/.ssh/id_dsa type -1 debug1: identity file /home/sun/.ssh/id_dsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.8p1 Debian-7ubuntu1 debug1: match: OpenSSH_5.8p1 Debian-7ubuntu1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.6 debug2: fd 3 setting O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256 debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,[email protected],hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: mac_setup: found hmac-md5 debug1: kex: server->client aes128-ctr hmac-md5 none debug2: mac_setup: found hmac-md5 debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug2: dh_gen_key: priv key bits set: 118/256 debug2: bits set: 539/1024 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug3: check_host_in_hostfile: host 192.168.0.128 filename /home/sun/.ssh/known_hosts debug3: check_host_in_hostfile: host 192.168.0.128 filename /home/sun/.ssh/known_hosts debug3: check_host_in_hostfile: match line 139 debug1: Host '192.168.0.128' is known and matches the RSA host key. debug1: Found key in /home/sun/.ssh/known_hosts:139 debug2: bits set: 544/1024 debug1: ssh_rsa_verify: signature correct debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/sun/.ssh/id_rsa (0x213db960) debug2: key: /home/sun/.ssh/id_dsa ((nil)) debug1: Authentications that can continue: publickey,password debug3: start over, passed a different list publickey,password debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/sun/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password debug1: Trying private key: /home/sun/.ssh/id_dsa debug3: no such identity: /home/sun/.ssh/id_dsa debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password [email protected]'s password: debug3: packet_send2: adding 64 (len 60 padlen 4 extra_pad 64) debug2: we sent a password packet, wait for reply debug1: Authentication succeeded (password). Authenticated to 192.168.0.128 ([192.168.0.128]:22). debug1: channel 0: new [client-session] debug3: ssh_session2_open: channel_new: 0 debug2: channel 0: send open debug1: Requesting [email protected] debug1: Entering interactive session. debug2: callback start debug2: client_session2_setup: id 0 debug2: channel 0: request pty-req confirm 1 debug1: Sending environment. debug3: Ignored env ORBIT_SOCKETDIR debug3: Ignored env XDG_SESSION_ID debug3: Ignored env HOSTNAME debug3: Ignored env GIO_LAUNCHED_DESKTOP_FILE_PID debug3: Ignored env IMSETTINGS_INTEGRATE_DESKTOP debug3: Ignored env GPG_AGENT_INFO debug3: Ignored env TERM debug3: Ignored env HARDWARE_PLATFORM debug3: Ignored env SHELL debug3: Ignored env DESKTOP_STARTUP_ID debug3: Ignored env HISTSIZE debug3: Ignored env XDG_SESSION_COOKIE debug3: Ignored env GJS_DEBUG_OUTPUT debug3: Ignored env WINDOWID debug3: Ignored env GNOME_KEYRING_CONTROL debug3: Ignored env QTDIR debug3: Ignored env QTINC debug3: Ignored env GJS_DEBUG_TOPICS debug3: Ignored env IMSETTINGS_MODULE debug3: Ignored env USER debug3: Ignored env LS_COLORS debug3: Ignored env SSH_AUTH_SOCK debug3: Ignored env USERNAME debug3: Ignored env SESSION_MANAGER debug3: Ignored env GIO_LAUNCHED_DESKTOP_FILE debug3: Ignored env PATH debug3: Ignored env MAIL debug3: Ignored env DESKTOP_SESSION debug3: Ignored env QT_IM_MODULE debug3: Ignored env PWD debug1: Sending env XMODIFIERS = @im=none debug2: channel 0: request env confirm 0 debug1: Sending env LANG = en_US.utf8 debug2: channel 0: request env confirm 0 debug3: Ignored env KDE_IS_PRELINKED debug3: Ignored env GDM_LANG debug3: Ignored env KDEDIRS debug3: Ignored env GDMSESSION debug3: Ignored env SSH_ASKPASS debug3: Ignored env HISTCONTROL debug3: Ignored env HOME debug3: Ignored env SHLVL debug3: Ignored env GDL_PATH debug3: Ignored env GNOME_DESKTOP_SESSION_ID debug3: Ignored env LOGNAME debug3: Ignored env QTLIB debug3: Ignored env CVS_RSH debug3: Ignored env DBUS_SESSION_BUS_ADDRESS debug3: Ignored env LESSOPEN debug3: Ignored env WINDOWPATH debug3: Ignored env XDG_RUNTIME_DIR debug3: Ignored env DISPLAY debug3: Ignored env G_BROKEN_FILENAMES debug3: Ignored env COLORTERM debug3: Ignored env XAUTHORITY debug3: Ignored env _ debug2: channel 0: request shell confirm 1 debug2: fd 3 setting TCP_NODELAY debug2: callback done debug2: channel 0: open confirm rwindow 0 rmax 32768 debug2: channel_input_status_confirm: type 99 id 0 debug2: PTY allocation request accepted on channel 0 debug2: channel 0: rcvd adjust 2097152 debug2: channel_input_status_confirm: type 99 id 0 debug2: shell request accepted on channel 0 Welcome to Ubuntu 11.10 (GNU/Linux 3.0.0-12-generic x86_64) * Documentation: https://help.ubuntu.com/ 297 packages can be updated. 92 updates are security updates. New release '12.04 LTS' available. Run 'do-release-upgrade' to upgrade to it. Last login: Fri Jun 8 07:45:15 2012 from 192.168.0.226 sun@SystemAX51:~$ ping 19<--------Lost connection again-------------- Tail follow: -- dmesg is showing a very abnormal logs, like Ubuntu is automatically bringing the eth0 up, where eth0 is getting also auto down. [ 2025.897511] r8169 0000:02:00.0: eth0: link up [ 2029.347649] r8169 0000:02:00.0: eth0: link up [ 2030.775556] r8169 0000:02:00.0: eth0: link up [ 2038.242203] r8169 0000:02:00.0: eth0: link up [ 2057.267801] r8169 0000:02:00.0: eth0: link up [ 2062.871770] r8169 0000:02:00.0: eth0: link up [ 2082.479712] r8169 0000:02:00.0: eth0: link up [ 2285.630797] r8169 0000:02:00.0: eth0: link up [ 2308.417640] r8169 0000:02:00.0: eth0: link up [ 2480.948290] r8169 0000:02:00.0: eth0: link up [ 2824.884798] r8169 0000:02:00.0: eth0: link up [ 3030.022183] r8169 0000:02:00.0: eth0: link up [ 3306.587353] r8169 0000:02:00.0: eth0: link up [ 3523.566881] r8169 0000:02:00.0: eth0: link up [ 3619.839585] r8169 0000:02:00.0: eth0: link up [ 3682.154393] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) [ 3899.866854] r8169 0000:02:00.0: eth0: link up [ 4723.978269] r8169 0000:02:00.0: eth0: link up [ 4807.415682] r8169 0000:02:00.0: eth0: link up [ 5101.865686] r8169 0000:02:00.0: eth0: link up How do i fix it? -- http://ubuntuforums.org/showthread.php?t=1959794 $ apt-get install openipml openhpi-plugin-ipml $ openipmish > help redisp_cmd on|off > redisp_cmd on redisp set Final follow up: Step 1: BUG for network card driver r8169 Step 2: get the latest build version http://www.realtek.com/downloads/downloadsView.aspx?Langid=1&PNid=4&PFid=4&Level=5&Conn=4&DownTypeID=3&GetDown=false&Downloads=true#RTL8110SC(L) Step 3: build / make $ cd /var/tmp/driver $ tar xvfj r8169.tar.bz2 $ make clean modules && make install $ rmmod r8169 $ depmod $ cp src/r8169.ko /lib/modules/3.xxxx/kernel/drivers/net/r8169.ko $ modprobe r8169 $ update-initramfs -u $ init 6 Voila!!

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  • Enable wifi on my computer - firmware missing

    - by Sarah
    I am attempting to set up a wireless network on 11.04, freshly download today. The router is on and working. However, I do not have a wifi "card" (which I am assuming is a little USB-type thing that allows internet access, but correct me if I am wrong) and every time I try to type in the MAC address and everything, nothing works. I also get the "firmware missing" error when I scroll over the signal strength, which I have tried looking up but have been unsuccessful with completely understanding it. I guess my main question is do I need another little device to be able to use wifi on my ubuntu? I do have an ethernet cable but another person is using it and I do not want to be tied down to that cable. the problem is that none of the wireless networks show up, however they show up when I go into Windows mode on my laptop. I get an error message at the top saying "firmware missing" which I have tried looking up but still have no straight answer for.

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  • How to mount NAS folders via direct wired connection?

    - by Pavel Vlasov
    There are two machines connected to each other via network cable. One is notebook Ubuntu 12.04. Another is NAS Western Digital with a Debian. The NAS has some files shared via samba. I am not sure how it is called but under Windows these files are accessible via path \mybooklive\public. I know there is NFS - probably it is preferable over samba... So, how to get my files accessible from Ubuntu when a cable is plugged?

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  • Switching between ethernet interfaces on Ubuntu 10.04 SERVER

    - by Chaitanya
    I have ubuntu 10.04 "SERVER" installed on a system with two ehternet ports. I use only one at a time. I wanted to know if I can switch between ports without using ifup and ifdown every time. That means when I connect my Lan cable on eth0 it should work and it does. But when I disconnect the lan cable and connect it on eth1 I have to ifdown eth0 and only then it works. In my /etc/network/interfaces file I have configured both eth0 and eth1. there is no problem other than I have to switch it manually with ifdown and ifup everytime. Please guide. Thanks in advance

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  • Do I need a wifi card to have internet access?

    - by Sarah
    I am attempting to set up a wireless network on 11.04, freshly download today. The router is on and working. However, I do not have a wifi "card" (which I am assuming is a little USB-type thing that allows internet access, but correct me if I am wrong) and every time I try to type in the MAC address and everything, nothing works. I also get the "firmware missing" error when I scroll over the signal strength, which I have tried looking up but have been unsuccessful with completely understanding it. I guess my main question is do I need another little device to be able to use wifi on my ubuntu? I do have an ethernet cable but another person is using it and I do not want to be tied down to that cable. the problem is that none of the wireless networks show up, however they show up when I go into Windows mode on my laptop. I get an error message at the top saying "firmware missing" which I have tried looking up but still have no straight answer for.

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  • Black screen on latest Nvidia Cards when starting LightDM/Ubuntu

    - by Luis Alvarado
    Today I installed an Nvidia GT440 on my computer, changing the one that existed there, an Nvidia 9500GT. After changing it I started getting a problem where the screen just went black when loading the lightdm login screen (Where I punt my user and password). The thing is, if I disconnect the VGA cable and connect it again I get to see the lightdm greeter and everything works perfect. The problem is that I have to connect/disconnect every time I reboot the PC. I tried installing the 285.xx drivers. Same problem. I removed the Nvidia drivers installed with Jockey, rebooted, same problem. I install the current 280.xx again, same problem. After all that I installed a fresh install of Ubuntu, selected to install the Nvidia drivers while installing it from the livecd. After booting the same problem appeared. Dmesg does not say anything wrong about it. Same goes for the log from Jockey. What else should I check or what to do to solve it. Just to clarify, this does not happen BEFORE the lightdm greeter appears. Am guessing before the actual use of the video card with X starts with all the 2D/3D stuff that is used in ligthdm and unity. I can use any tty and even see the Ubuntu logo when starting. UPDATE: When I open a game in fullscreen the problem appears again. I have to unplug the monitor cable and plug it back in to see the game. Then when I quit the game I have to do it again to see the desktop. UPDATE 2: Today I bought a HDMI cable, connected the video card to the TV am testing it with and it actually did log in correctly without any black screen but it shows the resolution a little over the actual size of the screen. So I see only half of the launcher since the left side of it is hidden outside of the real resolution and the top bar is beyond the resolution. So the black screen is related to the VGA connection.

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