![]() If it connects to an address, but not a common name then it could be a DNS issue.If you are a mobile Linux user one of the first things you need to do is to connect that mobile device to a wireless access point. You can also ping your router's IP address, an external site using either its IP address, or common name. If the loopback does not work, then it could be an issue with the TCP/IP stack. This indicates if this network requires an encryption key.Įnter the following command in terminal: (Where -c 4 means four echo requests and 127.0.01 is the loopback address.) This number indicates the signal quality, from 1 - 5 Encryption key This is the wireless network access mode, Managed=Access Point Mode Quality This is the wireless network name, SSID Mode Look for these pieces of information that might help your troubleshooting. The output from the scan contains some useful information. ![]() The computer scans for access points and returns a list of the ones that it has found. IEEE 802.11bgn ESSID: off/any mode: Managed Access Point: Not-Associated Tx-Power: 16 dBm Sensitivity=0/3 Retry long limit: Seven RTS thr: off Fragment thr: off Power Management: off wlan0Įnter the following command in terminal: (Where is the name of the wireless adapter as found in the last command.) The computer displays a list of network adapters: eth0 Scanning from the command line is another option. Contact your Technical support to resolve this issue. It shows the available networks but does not connect to any. The dropdown menu shows a list of wireless networks in range. Click the NetworkManager on your menu bar. The wireless device is not listed correctly, you should contact your Technical Support. If the wireless device is now listed correctly under PCI or USB, reinstall the device drivers. If your wireless device is a USB dongle device, type the following command:Ĭan you identify your device from the lists generated? If your wireless device is an internal PCI device, type the following command: The wireless device is not listed correctly, go to the next step.įollow the steps for your device connection type: If the wireless device is listed correctly, reinstall the device drivers. Product: Intel8720A Wireless Network Adapter You should get a result that looks something like this: If not, you can get more details from the adapter using the following commands: Get the details from the adapter and connection status using the following command:Ĭheck if the output state contains connected. If it does, the card is connecting. Run the following troubleshooting steps on the wireless adapter to confirm that the adapter is recognized: Note: Confirm in the computer menu, that airplane mode is not enabled in Wi-Fi Settings. If your issue continues, proceed with the next step. If the situation changes and the Wi-Fi starts to work, it was a loose connection, and your issue should be resolved. If that is not possible, then reseat the Wi-Fi card and antenna cables: It was a loose connection, and your issue should be resolved. The fault stays with the working card in your computer and your card is working fine in the working machine. Contact your technical support to have the hardware issue resolved. The fault followed the original card to the working computer, and the card from the working computer works in your computer. The best way to rule out a hardware issue is to two-way swap the Wi-Fi card with another compatible computer. Then select Try Ubuntu to boot from the media, instead of your Hard drive. Note: Press the F12 key at the Dell splash screen and select either CD or USB boot from the options menu that appears. If it is not detected, go to hardware troubleshooting. If it is detected, then proceed with the guide. If you boot the computer to the Basic Input Output Setup (BIOS), can you see the installed Wi-Fi card? If not, contact your ISP about a general network issue. If it does not detect your installed Wi-Fi card, go to Step 3. If it can intermittently see and connect to available wireless networks, go to hardware troubleshooting. If it cannot see any networks even when physically held over the router, proceed with Step 2. If it can see networks but cannot connect to any, and your Wi-Fi strength is low, proceed with Step 2. The network itself or your connection settings may be at fault. If it can see networks and connect to any other network but yours, contact your Internet Service Provider ISP. Identifying any issues outside the computerĬan your computer detect local Wi-Fi networks, but it cannot connect to them?
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