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Author Topic: 11.04 Connection Issues - Wireless Works / Ethernet Won't  (Read 1440 times)
Beaflag VonRathburg
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March 19, 2012, 10:16:45 PM
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I've been mining from my neighbors wireless network (with permission). I'd run roughly 2x40 feet of usb extension cables to antennas outside. My signal strength is pretty good, but I was having stability issues and minor disconnects turned into huge issues as some changes with Catalyst 11.6 removed part of my GUI menus. One of which contains the Network Manager. Any disconnect would prompt me to simply click reconnect, but if I wasn't home... The machines would run full tilt, but not hash a damn thing. DOT!

Today, I had my local internet provided come out and run a new internet line for my house. The line works great on my Windows machine, but neither of my 11.04 machines will work. I have the line coming out of the wall into an arris router --> dlink wireless router with 4x ethernet plugs on the back. When I connect the ethernet cable to my windows machine the light on the dlink comes on, but not when I connect to either linux machines. I've done a lot of reading and done some testing, but the output still kind of confuses me. These commands are with my wireless network plugged in as I was using the machine to browse for issues as well.

ubuntu@ubuntu:~/Desktop$ sudo ifconfig
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:16436  Metric:1
          RX packets:1880 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1880 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:154024 (154.0 KB)  TX bytes:154024 (154.0 KB)

wlan0     Link encap:Ethernet  HWaddr 00:1a:ef:23:12:c4 
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)



ubuntu@ubuntu:~/Desktop$ sudo lshw -C network
  *-network               
       description: Wireless interface
       physical id: 3
       bus info: usb@1:1.4.3.3
       logical name: wlan0
       serial: 00:1a:ef:23:12:c4
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=r8712u multicast=yes wireless=unassociated



ubuntu@ubuntu:~/Desktop$ sudo lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation 2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 2 (rev b5)
00:1c.2 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 3 (rev b5)
00:1d.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation 6 Series Chipset Family LPC Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series Chipset Family SMBus Controller (rev 05)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 5870 (Cypress)
01:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]
02:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 5870 (Cypress)
02:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]
03:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 5870 (Cypress)
03:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]
04:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 5870 (Cypress)
04:00.1 Audio device: ATI Technologies Inc Cypress HDMI Audio [Radeon HD 5800 Series]

I went through these steps as well:

Quote from: Ubuntu Forums
I've solved my problem, so i'll try help now,

Open Terminal and type


PHP Code:
sudo gedit /etc/NetworkManager/NetworkManager.conf 

instead of Gedit you can use what ever editor you like

Find a section with the title [ifupdown]
and there should straight under it be a line saying

managed=false

Just change false to true, save, restart and hopefully it should be working


[ifupdown] maybe renamed something else on your system (i don't know) but its the last part of the document.

I hope this helps

EDIT:
Manually overriding for Static IP seems to be unavaliable at the moment, but this will get the connections up and running for now.[/QUOTE=Ubuntu Forums]

I'm confused on this as I think it is really simple, but I can't figure it out. Any help would be greatly appreciated.

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P4man
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March 19, 2012, 10:34:56 PM
 #2

There is no network card listed in your lspci output, because its (internally?) connected to the USB hub apparently.
Can you post the output of
Code:
lsusb


Beaflag VonRathburg
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March 20, 2012, 02:23:22 AM
 #3

There is no network card listed in your lspci output, because its (internally?) connected to the USB hub apparently.
Can you post the output of
Code:
lsusb



Thank you for the assistance! I figured it out about 30 minutes ago and thought I would post an update. I was talking to a friend of mine on the phone and it just sort of hit me. I turned the onboard lan, amongst other things off in the bios of both machines to save power. I restarted both machines, changed the bios, plugged in the ethernet cable, and it automatically connected (which for now kind of resolves my issues with not being able to see the network manager). I mentioned before that it might be really simple, but I couldn't figure it out. DOT, but at least they're running again and without connectivity issues.

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