internet not working- network card issue???

Asked by mr lee

I recently had a UVerse modem installed from AT&T. when the tech left, both my machines (PC and Lap) were working perfect.

Within the next couple of days, the desktop would connect intermittenly (laptop was fine).

I would shut down the PC, reboot, and it would be fine. Then, it started failing after it was up and running, until finally, prob 4-5 days later, I got no connection AT ALL.

Laptop has been fine, no probs. Both machines are running 11.10, I have swapped ethernet cables, unplugged and replugged the modem, my system says "network cable unplugged"...but it ain't...

could my network card be bad?

Is there something else I can check, or a diagnostic i can run?

pls help, I know you guys (and girls) are the best!!! thanks in advance...

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Ubuntu gnome-nettool Edit question
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mr lee
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actionparsnip (andrew-woodhead666) said :
#1

Can you give the output of:

sudo lshw -C network; lsb_release -a; uname -a; sudo rfkill list

Thanks

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mr lee (mrlee1953) said :
#2

@actionparsnip- sadly, I can run the command and see the results...however, I have no way to "transfer" it to my laptop in order to send it...is there something in particular you are looking for? I may be able to "copy by hand" for you... thanks

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actionparsnip (andrew-woodhead666) said :
#3

Not got a USB stick, or can't bluetooth it to a phone or other storage device....

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mr lee (mrlee1953) said :
#4

@actionparsnip- yes, found one (why didnt *I* think of that)?

mrlee@mrlee-desktop:~$ sudo lshw -C network; lsb_release -a; uname -a;sudo rfkill list[sudo] password for mrlee:
DMI
  *-network:0 UNCLAIMED
       description: Ethernet controller
       product: RT8139 (B/C) Cardbus Fast Ethernet Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 9
       bus info: pci@0000:00:09.0
       version: 10
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=32 maxlatency=64 mingnt=32
  *-network:1
       description: Ethernet interface
       product: VT6102 [Rhine-II]
       vendor: VIA Technologies, Inc.
       physical id: 12
       bus info: pci@0000:00:12.0
       logical name: eth0
       version: 78
       serial: 00:14:85:1a:1a:88
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=via-rhine driverversion=1.5.0 duplex=half latency=64 link=no maxlatency=8 mingnt=3 multicast=yes port=MII speed=10Mbit/s
       resources: irq:23 ioport:c400(size=256) memory:ea002000-ea0020ff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 11.10
Release: 11.10
Codename: oneiric
Linux mrlee-desktop 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:50:54 UTC 2012 i686 athlon i386 GNU/Linux
mrlee@mrlee-desktop:~$
mrlee@mrlee-desktop:~$

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mr lee (mrlee1953) said :
#5

@actionparsnip- have you seen the info you requested me to send you?

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actionparsnip (andrew-woodhead666) said :
#6

Is it the via or the realtek?

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mr lee (mrlee1953) said :
#7

it is a new type modem/router from AT&T/U-verse. made by Pace Americas... model # 3801HGV...IS THERE ANY OTHER INFO U NEED?

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actionparsnip (andrew-woodhead666) said :
#8

Which interface do you have it connected to?

Does this help:
https://help.ubuntu.com/community/ADSLPPPoE

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mr lee (mrlee1953) said :
#9

I'm not sure what u mean...the old type of modem was powered by the phone line---this type apparently backfeeds into the phone line to power it...not sure how all that stuff works...by interface did u mean that it is running thru the phone line?

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mr lee (mrlee1953) said :
#10

I checked with the dpkg -s pppoeconf and it says it is installed...also says "priority optional"...

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actionparsnip (andrew-woodhead666) said :
#11

Well you have 2 Ethernet ports, which is the one being used?

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mr lee (mrlee1953) said :
#12

if U R referring to the computer, I only have 1 port, there are 4 ports in the modem, currently ports 1 & 3 are being used. I have tried plugging, unplugging, switching ports etc to no avail...(sorry for being dunce-like)

Revision history for this message
actionparsnip (andrew-woodhead666) said :
#13

Your lshw says you have 2 ethernet ports:

    product: VT6102 [Rhine-II]
and
       product: RT8139 (B/C) Cardbus Fast Ethernet Adapter

The VIA one seems to have picked up as ok wheras the other has no driver (Hence the UNCLAIMED bit).

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mr lee (mrlee1953) said :
#14

...ok...i did locate the other... do u want me to connect to the other port and see if THAT one works? I'll shut down, switch and let you know... i hope i wont incur any damage by switching ports...(again, sorry for bein a doofus).........

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mr lee (mrlee1953) said :
#15

I plugged in to the other port, rebooted and still nothing...

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mr lee (mrlee1953) said :
#16

@actionparsnip- yesterday, I happened to look over at the desktop, and saw the internet arrows present. I wanted to wait a bit to make sure it didnt fail (again)...so far, the internet connection IS WORKING! I dont know if it was your suggestion about switching ports or not (it was not working when I initially switched)...wanted to let you know the update...thank you AGAIN for your assistance...

Revision history for this message
benroots (benroots34) said :
#17

I'm sorry to hear that you're experiencing connectivity issues with your desktop computer. There could be several reasons for the problem you're facing, and it's difficult to pinpoint the exact cause without more information. However, I can provide you with some troubleshooting steps to help you identify and potentially resolve the issue:

Check physical connections: Ensure that the Ethernet cable is securely plugged into both the modem and your desktop computer. Try using a different Ethernet port on the modem, if available.

Test with a different device: To determine if the issue is specific to your desktop computer or the network connection itself, try connecting a different device (such as another laptop or smartphone) to the modem using the same Ethernet cable. If the alternative device can connect successfully, it indicates that the problem might be with your desktop computer.

Update network drivers: Outdated or faulty network drivers can cause connection problems. Visit the manufacturer's website for your desktop computer and look for updated drivers for your network card. Install any available updates and restart your computer.

Reset TCP/IP stack: Open the command prompt on your desktop computer and run the following commands one by one, followed by pressing Enter after each command:

ipconfig /release
ipconfig /renew
netsh int ip reset
netsh winsock reset
After running these commands, restart your computer and check if the issue is resolved.
Disable security software temporarily: Sometimes, security software like firewalls or antivirus programs can interfere with network connections. Temporarily disable any security software on your desktop computer and check if the connectivity issue persists. If it resolves the problem, you may need to adjust the settings of your security software to allow network access.

Test with a Wi-Fi connection: If your desktop computer has Wi-Fi capability, try connecting it to your AT&T UVerse modem using Wi-Fi instead of Ethernet. This will help determine if the issue is specific to the Ethernet connection or if it affects all types of network connections.

If you have followed these steps and are still experiencing issues, it's possible that there could be a problem with the network card on your desktop computer. In such cases, you may consider contacting the manufacturer's support or consulting a technician for further assistance.

Please note that these are general troubleshooting steps, and your specific situation may require additional actions. Solution by https://fiverrme.com/