How to troubleshoot ethernet port on laptop
- by Psallas Vassilios
I have a problem with my wired connection.
To be more specific, my laptop doesn't seems to recognize that I have plugged in an ethernet cable.
I tried to download new drivers for my ethernet card, but I couldn't find any solutions. Maybe because I am new to Linux, so I'm not familiar with running commands in the terminal.
OK I have typed the command and here are the results:
00:04.0 Ethernet controller [0200]: Silicon Integrated Systems [SiS] 191 Gigabit Ethernet Adapter [1039:0191] (rev 02)
For the second reply I don't know if the following is what you asked me:
?Memory: 3.9 GiB
?Processor: Intel Core 2 Duo CPU P8800 @ 2.66GHz × 2
?OS type: 32-bit
My Ethernet connection had some problem on Windows too.
I have changed recently my internet provider, and since then my ethernet cable is not recognized by the laptop. At that time I was still on Windows. I thought that with Ubuntu the problem would be solved, but unfortunately the problem still persists. If someone can help me to solve my problem I'll be thankful.
Here are the results of the three first commands you told me to run:
lsmod | grep sis190
sis190 22570 0
sudo modprobe sis190
ifconfig
eth0 Link encap:Ethernet HWaddr 00:90:f5:90:81:7e
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)
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:185 errors:0 dropped:0 overruns:0 frame:0
TX packets:185 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:22672 (22.6 KB) TX bytes:22672 (22.6 KB)
wlan0 Link encap:Ethernet HWaddr 00:25:d3:2c:3a:ae
inet addr:192.168.1.72 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::225:d3ff:fe2c:3aae/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:260 errors:0 dropped:0 overruns:0 frame:0
TX packets:363 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:71992 (71.9 KB) TX bytes:52000 (52.0 KB)
and the results of running the last two commands:
dmesg | grep -e eth -e sis190
[ 0.816667] sis190: sis190 Gigabit Ethernet driver 1.4 loaded
[ 0.816728] sis190 0000:00:04.0: setting latency timer to 64
[ 0.816751] sis190: 0000:00:04.0: Read MAC address from EEPROM
[ 0.904032] sis190: 0000:00:04.0: Realtek PHY RTL8201 transceiver at address
[ 1.416030] sis190: 0000:00:04.0: Using transceiver at address 1 as default
[ 1.448235] sis190 0000:00:04.0: eth0: 0000:00:04.0: SiS 191 PCI Gigabit Ethernet adapter at f8410000 (IRQ: 19), 00:90:f5:90:81:7e
[ 1.448238] sis190 0000:00:04.0: eth0: GMII mode.
[ 1.448243] sis190 0000:00:04.0: eth0: Enabling Auto-negotiation
[ 11.560907] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 16.372019] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 16.372265] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 26.424038] sis190 0000:00:04.0: eth0: auto-negotiating...
nm-tool
NetworkManager Tool
State: connected (global)
- Device: eth0 ----------------------------------------------------------------- Type: Wired Driver: sis190 State:
unavailable Default: no HW Address:
00:90:F5:90:81:7E
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
