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Old 10-15-2010, 06:15 AM   #1
tooonami
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Registered: Nov 2009
Posts: 21

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Weird Ethernet Problem


Hi, I did a fresh install of Ubuntu 10.04, then did the useual update to get all the latest fixxs.

I then downloaded the latest Nvidia driver from the official site and installed it.

After rebooting I noticed that I had no ethernet connection, I reformatted again and did it again but still the same thing is happening.

Could someone help me out and guide me through getting my internet connection back please as I'm a newb and need all the help I can get.

For ifconfig I get:

Code:
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:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:480 (480.0 B)  TX bytes:480 (480.0 B)

For ifconfig down I get:

Code:
down: error fetching interface information: Device not found
For ifconfig up I get:

Code:
up: error fetching interface information: Device not found

The ethernet driver is installed as it was working before I installed the Nvidia driver.
 
Old 10-15-2010, 06:21 AM   #2
prayag_pjs
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Registered: Feb 2008
Location: Pune - India
Distribution: Fedora,RedHat,CentOS,Gentoo
Posts: 1,138
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Rep: Reputation: 147Reputation: 147
Hi,

Try this to confirm eht0 is detected and link is ok

Quote:
sudo mii-tool
Do

Quote:
sudo ifconfig eth0 up
Also try to follow this guide to troubleshoot network interfaces.
 
Old 10-15-2010, 06:40 AM   #3
tooonami
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Registered: Nov 2009
Posts: 21

Original Poster
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Thanks for your help.

For "sudo mii-tool" I get:

Code:
no MII interfaces found
FOR "sudo ifconfig eth0 up" I get:

Code:
SIOCSIFFLAGS: Cannot allocate memory
 
Old 10-15-2010, 06:53 AM   #4
prayag_pjs
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Registered: Feb 2008
Location: Pune - India
Distribution: Fedora,RedHat,CentOS,Gentoo
Posts: 1,138
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Rep: Reputation: 147Reputation: 147
Hi,

Please confirm the network card make

and post the output of

Quote:
lspci| grep -i ethernet
Quote:
dmesg | grep -i ethernet
 
Old 10-15-2010, 07:15 AM   #5
tooonami
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Registered: Nov 2009
Posts: 21

Original Poster
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Ok something weird is going on.

For "lspci| grep -i ethernet" I get:

Code:
00:0c.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10)
As soon as I entered the second command you gave me "dmesg | grep -i ethernet" My ethernet came back up and I'm now able to connect to the internet.

The output for "dmesg | grep -i ethernet" I get:

Code:
[    1.437680] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
I'm just going for a reboot now to see if its up when I log back in.

EDIT: So back from the reboot and its still up and able to access the internet.

Thanks for your help buddy, seems that second command you gave me did the trick.

Last edited by tooonami; 10-15-2010 at 07:18 AM.
 
Old 10-15-2010, 07:54 AM   #6
markush
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Registered: Apr 2007
Location: Germany
Distribution: Slackware
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hello tooonami,

it seems that your system lacks the kernelmodule für the Realtek device (I found a thread in a german debian-forum which refers to a similar issue).
Here the link to the forum: http://debianforum.de/forum/viewtopic.php?f=33&t=122185
They have this link to the Realtek-site: http://www.realtek.com/downloads/dow...3Cbr%3ERTL8169
A bugreport: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=573007

I hope this will help

Markus
 
  


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