Cable modem and internet, not working

**kooba** · 10-09-2011

On my Win7 side (dual boot) my internet works fine.
But when I log onto Ubuntu (Classic 11.04) it searches and searches, but I can't get connected.
Anyone have the same problems or know what can be done?
Thank in advance.

My modem is a Motorola SB6120 (DOCSIS)

**jayd512** · 10-10-2011

So it's a cable modem, connected via CAT5 cable, correct?
What is the output of ifconfig -a

*EDIT*
Afterthought here...
Please also post the output if lspci -vnn

**kooba** · 10-14-2011

Hi Jay, thanks for the reply.
I did some digging around and came up with this download for the drivers for my RealTek Giga
realtek. com/Downloads/downloadsView.aspx?Langid=1&PNid=13&PFid=5&Level=5 &Conn=4&DownTypeID=3&GetDown=fa

When I download the Linux file dated August 2011 and tried the Autorun.sh script, I got an error saying it couldn't remove the realtek drivers already installed (I can post a screenshot later, can't upload at the moment)

ifconfig -a output

Code:

eth0      Link encap:Ethernet  HWaddr 1c:6f:65:c5:5b:97  
          inet6 addr: fe80::1e6f:65ff:fec5:5b97/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:14 errors:0 dropped:14 overruns:0 frame:14
          TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1670 (1.6 KB)  TX bytes:5666 (5.6 KB)
          Interrupt:41 Base address:0xc000 

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:68 errors:0 dropped:0 overruns:0 frame:0
          TX packets:68 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:5000 (5.0 KB)  TX bytes:5000 (5.0 KB)

wlan0     Link encap:Ethernet  HWaddr 00:13:46:94:d0:3b  
          inet addr:192.168.1.105  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::213:46ff:fe94:d03b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:21938 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17841 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:26687687 (26.6 MB)  TX bytes:2493816 (2.4 MB)

------------------------------------------------------------------------------------------------------------------------------------

Code:

lspci -vnn output

00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller [8086:0100] (rev 09)
	Flags: bus master, fast devsel, latency 0
	Capabilities: <access denied>

00:01.0 PCI bridge [0604]: Intel Corporation 2nd Generation Core Processor Family PCI Express Root Port [8086:0101] (rev 09) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
	I/O behind bridge: 0000a000-0000afff
	Memory behind bridge: f6000000-f9ffffff
	Prefetchable memory behind bridge: 00000000e0000000-00000000efffffff
	Capabilities: <access denied>
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:16.0 Communication controller [0780]: Intel Corporation 6 Series Chipset Family MEI Controller #1 [8086:1c3a] (rev 04)
	Subsystem: Giga-byte Technology Device [1458:1c3a]
	Flags: bus master, fast devsel, latency 0, IRQ 11
	Memory at fbfff000 (64-bit, non-prefetchable) [size=16]
	Capabilities: <access denied>

00:1a.0 USB Controller [0c03]: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #2 [8086:1c2d] (rev 05) (prog-if 20 [EHCI])
	Subsystem: Giga-byte Technology Device [1458:5006]
	Flags: bus master, medium devsel, latency 0, IRQ 18
	Memory at fbffe000 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:1b.0 Audio device [0403]: Intel Corporation 6 Series Chipset Family High Definition Audio Controller [8086:1c20] (rev 05)
	Subsystem: Giga-byte Technology Device [1458:a102]
	Flags: bus master, fast devsel, latency 0, IRQ 45
	Memory at fbff4000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: HDA Intel
	Kernel modules: snd-hda-intel

00:1c.0 PCI bridge [0604]: Intel Corporation 6 Series Chipset Family PCI Express Root Port 1 [8086:1c10] (rev b5) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
	I/O behind bridge: 0000e000-0000efff
	Memory behind bridge: fbb00000-fbbfffff
	Prefetchable memory behind bridge: 00000000f4000000-00000000f40fffff
	Capabilities: <access denied>
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1c.3 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev b5) (prog-if 01 [Subtractive decode])
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=03, subordinate=04, sec-latency=0
	I/O behind bridge: 0000d000-0000dfff
	Memory behind bridge: fba00000-fbafffff
	Capabilities: <access denied>

00:1c.4 PCI bridge [0604]: Intel Corporation 6 Series Chipset Family PCI Express Root Port 5 [8086:1c18] (rev b5) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
	Memory behind bridge: fb900000-fb9fffff
	Capabilities: <access denied>
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1c.5 PCI bridge [0604]: Intel Corporation 6 Series Chipset Family PCI Express Root Port 6 [8086:1c1a] (rev b5) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=06, subordinate=06, sec-latency=0
	Memory behind bridge: fbe00000-fbefffff
	Capabilities: <access denied>
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1c.6 PCI bridge [0604]: Intel Corporation 6 Series Chipset Family PCI Express Root Port 7 [8086:1c1c] (rev b5) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=07, subordinate=07, sec-latency=0
	I/O behind bridge: 0000c000-0000cfff
	Prefetchable memory behind bridge: 00000000fbd00000-00000000fbdfffff
	Capabilities: <access denied>
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1c.7 PCI bridge [0604]: Intel Corporation 6 Series Chipset Family PCI Express Root Port 8 [8086:1c1e] (rev b5) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=08, subordinate=08, sec-latency=0
	I/O behind bridge: 0000b000-0000bfff
	Memory behind bridge: fbc00000-fbcfffff
	Prefetchable memory behind bridge: 00000000f4100000-00000000f41fffff
	Capabilities: <access denied>
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1d.0 USB Controller [0c03]: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #1 [8086:1c26] (rev 05) (prog-if 20 [EHCI])
	Subsystem: Giga-byte Technology Device [1458:5006]
	Flags: bus master, medium devsel, latency 0, IRQ 23
	Memory at fbffd000 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:1f.0 ISA bridge [0601]: Intel Corporation 6 Series Chipset Family LPC Controller [8086:1c44] (rev 05)
	Subsystem: Giga-byte Technology Device [1458:5001]
	Flags: bus master, medium devsel, latency 0
	Capabilities: <access denied>
	Kernel modules: iTCO_wdt

00:1f.2 SATA controller [0106]: Intel Corporation 6 Series Chipset Family 6 port SATA AHCI Controller [8086:1c02] (rev 05) (prog-if 01 [AHCI 1.0])
	Subsystem: Giga-byte Technology Device [1458:b005]
	Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 43
	I/O ports at ff00 [size=8]
	I/O ports at fe00 [size=4]
	I/O ports at fd00 [size=8]
	I/O ports at fc00 [size=4]
	I/O ports at fb00 [size=32]
	Memory at fbffc000 (32-bit, non-prefetchable) [size=2K]
	Capabilities: <access denied>
	Kernel driver in use: ahci
	Kernel modules: ahci

00:1f.3 SMBus [0c05]: Intel Corporation 6 Series Chipset Family SMBus Controller [8086:1c22] (rev 05)
	Subsystem: Giga-byte Technology Device [1458:5001]
	Flags: medium devsel, IRQ 12
	Memory at fbffb000 (64-bit, non-prefetchable) [size=256]
	I/O ports at 0500 [size=32]
	Kernel modules: i2c-i801

01:00.0 VGA compatible controller [0300]: nVidia Corporation GF104 [GeForce GTX 460] [10de:0e22] (rev a1) (prog-if 00 [VGA controller])
	Subsystem: eVga.com. Corp. Device [3842:1372]
	Flags: bus master, fast devsel, latency 0, IRQ 16
	Memory at f6000000 (32-bit, non-prefetchable) [size=32M]
	Memory at e0000000 (64-bit, prefetchable) [size=128M]
	Memory at ec000000 (64-bit, prefetchable) [size=64M]
	I/O ports at af00 [size=128]
	[virtual] Expansion ROM at e8000000 [disabled] [size=512K]
	Capabilities: <access denied>
	Kernel driver in use: nvidia
	Kernel modules: nvidia-current, nouveau, nvidiafb

01:00.1 Audio device [0403]: nVidia Corporation GF104 High Definition Audio Controller [10de:0beb] (rev a1)
	Subsystem: eVga.com. Corp. Device [3842:1372]
	Flags: bus master, fast devsel, latency 0, IRQ 17
	Memory at f9ffc000 (32-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: HDA Intel
	Kernel modules: snd-hda-intel

02:00.0 IDE interface [0101]: Marvell Technology Group Ltd. Device [1b4b:917a] (rev 11) (prog-if 8f [Master SecP SecO PriP PriO])
	Subsystem: Giga-byte Technology Device [1458:b000]
	Flags: fast devsel, IRQ 16
	I/O ports at ef00 [size=8]
	I/O ports at ee00 [size=4]
	I/O ports at ed00 [size=8]
	I/O ports at ec00 [size=4]
	I/O ports at eb00 [size=16]
	Memory at fbbff000 (32-bit, non-prefetchable) [size=512]
	[virtual] Expansion ROM at f4000000 [disabled] [size=64K]
	Capabilities: <access denied>

03:00.0 PCI bridge [0604]: Integrated Technology Express, Inc. Device [1283:8892] (rev 10) (prog-if 01 [Subtractive decode])
	Flags: bus master, fast devsel, latency 0
	Bus: primary=03, secondary=04, subordinate=04, sec-latency=32
	I/O behind bridge: 0000d000-0000dfff
	Memory behind bridge: fba00000-fbafffff
	Capabilities: <access denied>

04:02.0 FireWire (IEEE 1394) [0c00]: VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller [1106:3044] (rev c0) (prog-if 10 [OHCI])
	Subsystem: Giga-byte Technology GA-7VT600-1394 Motherboard [1458:1000]
	Flags: bus master, medium devsel, latency 32, IRQ 17
	Memory at fbaff000 (32-bit, non-prefetchable) [size=2K]
	I/O ports at df00 [size=128]
	Capabilities: <access denied>
	Kernel driver in use: firewire_ohci
	Kernel modules: firewire-ohci

05:00.0 USB Controller [0c03]: Device [1b6f:7023] (rev 01) (prog-if 30 [XHCI])
	Subsystem: Giga-byte Technology Device [1458:5007]
	Flags: bus master, fast devsel, latency 0, IRQ 42
	Memory at fb9f8000 (64-bit, non-prefetchable) [size=32K]
	Capabilities: <access denied>
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci-hcd

06:00.0 USB Controller [0c03]: Device [1b6f:7023] (rev 01) (prog-if 30 [XHCI])
	Subsystem: Giga-byte Technology Device [1458:5007]
	Flags: bus master, fast devsel, latency 0, IRQ 44
	Memory at fbef8000 (64-bit, non-prefetchable) [size=32K]
	Capabilities: <access denied>
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci-hcd

07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 06)
	Subsystem: Giga-byte Technology GA-EP45-DS5 Motherboard [1458:e000]
	Flags: bus master, fast devsel, latency 0, IRQ 41
	I/O ports at ce00 [size=256]
	Memory at fbdff000 (64-bit, prefetchable) [size=4K]
	Memory at fbdf8000 (64-bit, prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: r8169
	Kernel modules: r8169

08:00.0 IDE interface [0101]: Marvell Technology Group Ltd. Device [1b4b:917a] (rev 11) (prog-if 8f [Master SecP SecO PriP PriO])
	Subsystem: Giga-byte Technology Device [1458:b000]
	Flags: fast devsel, IRQ 19
	I/O ports at bf00 [size=8]
	I/O ports at be00 [size=4]
	I/O ports at bd00 [size=8]
	I/O ports at bc00 [size=4]
	I/O ports at bb00 [size=16]
	Memory at fbcff000 (32-bit, non-prefetchable) [size=512]
	[virtual] Expansion ROM at f4100000 [disabled] [size=64K]
	Capabilities: <access denied>

***atreyu*** · 10-14-2011

Are you trying to connect via wireless or via wired (CAT5, etc.)? I see that you get an ip address via wireless (that is your wlan0 adapter) but not via your wired adapter (eth0) - at least you don't have an ipv4 ip address.

At any rate, also show your routing table:

Code:

route -n

And your DNS config:

Code:

cat /etc/resolv.conf

I assume you are wishing to get ip addresses assigned to you automatically via your modem? Or did you assign that wireless ip statically?

What is your distro?

BTW, you probably don't need to mess with those drivers you downloaded, it appears your adapters are working, from a driver stand-point.

**kooba** · 10-14-2011

Hi At', thanks for the reply.

Here's my router -n

Code:

Kernel IP routing table

Code:

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     2      0        0 wlan0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wlan0
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 wlan0

My DNS config is

Code:

# Generated by NetworkManager
domain phub.net.cable.rogers.com
search phub.net.cable.rogers.com
nameserver 64.71.259.199

I'm trying to connect via ethernet cable (CAT5 is the standard ethernet cable correct?)

But the only way I can get online with it is via a D-Link USB stick to my friend's router.

My distro is Ubuntu 11.04, but I'm planning to install 11.10 soon.

Thanks for your help guys.

**kooba** · 10-14-2011

This is what I got when trying to install what seemed to be the "proper" drivers from RealTek, when running the autorun script to install them.
snapshot3.jpg

***atreyu*** · 10-14-2011

Okay, didn't realize you were using a USB network adapter, I guess that is your eth0. Can you confirm with:

Code:

ethtool -i eth0

As to install the RealTek driver, are you doing that command as root? I guess the module that comes with the kernel you are using does not work out of the box?

Code:

modprobe r8169
lsmod|grep r8169
find /lib/modules/$(uname -r)|grep r8169

**kooba** · 10-14-2011

ethtool -i eth0
-I get this--> The program 'ethtool' is currently not installed. You can install it by typing: sudo apt-get install ethtool

modprobe r8169
---> nothing happens

lsmod|grep r8169
-I get this--> r8169 42534 0

find /lib/modules/$(uname -r)|grep r8169

-i get this--> /lib/modules/2.6.38-11-generic/kernel/drivers/net/r8169.ko

***atreyu*** · 10-14-2011

Okay, the ethtool package is not installed, you can try this instead:

Code:

 ls /sys/class/net/eth0/device/driver/module/drivers/

It appears the the RealTek driver that comes with your kernel is loaded, but is not recent enough.

What distro and version are running? I missed it, if you mentioned it.

You need to run that autorun.sh file in a terminal as root. The first step is to open a Terminal window. You can usually do this via an Applications menu, or if you are in Gnome, you can press Alt+F2 and that should bring up a Run Application window. In it, type gnome-terminal and press Enter.

A terminal window should now pop up, saying something like:

Code:

[user@linuxpc ~]$

You need to know where that driver file is that you downloaded - it is probably in your desktop folder, e.g.:

Code:

cd ~/Desktop; ls

You need to either su to root, or use sudo, e.g.:

Code:

su
[Enter root password]
./autorun.sh

or

Code:

sudo ./autorun.sh

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