Ethernet connection absent in CENTOS 3

08-31-2009	#1 (permalink)
ashwanis10 Just Joined! Join Date: Dec 2007 Posts: 5	Ethernet connection absent in CENTOS 3 Hello guys, i have to use a tool, which is dependent on RHEL3/4.So i thought that CENTOS 3 will suffice the requirement. I installed CentOS 3.9 yesterday on my machine which is Compaq presario SG35701L.It has ethernet adapter of ReaLtek RTL8139/810 Fastspeed, which works properly on my windows OS.But when i boot system in CentOS 3, then it fails to start any networking protocol, be it ssh, http, etc.When i checked the Network settings, i didn't find any eth0 or eth1.In the list of ethernet controllers, i couldn't find RealTek8139.Earlier, i have tried with CENTOS 5 also but it didn't work too and was giving the same problem. Doesn't Centos distro come with inbuilt networking drivers?? please let me the right solution. rgds, Ashwani

08-31-2009	#2 (permalink)
coopstah13 Linux Guru Join Date: Nov 2007 Location: NH, USA Posts: 1,756	Open terminal and post these codes Code: lspci \| grep -i ethernet lsmod \| grep 8139 This will tell us if the module is loaded. It should be in kernel since 2.4.3 from what I'm reading.

08-31-2009	#3 (permalink)
ashwanis10 Just Joined! Join Date: Dec 2007 Posts: 5	I tried your commands and got " Ethernet Controller RealTek Semiconductor Co. Ltd: "unknow device 8136( rev 01) and on lsmod \|grep 8139, i got nothing. rgds, Ashwani

08-31-2009	#4 (permalink)
coopstah13 Linux Guru Join Date: Nov 2007 Location: NH, USA Posts: 1,756	can you just post the whole output of Code: lsmod please put it inside code tags

09-01-2009

#5 (permalink)

ashwanis10

Just Joined!

Join Date: Dec 2007

Posts: 5

Yes this is the o/p f lsmod:

Code:

>/sbin/lsmod
Module                  Size  Used by    Not tainted
audit                  89944   2 (autoclean)
usbserial              23292   0 (autoclean) (unused)
lp                      8964   0 (autoclean)
parport                36832   0 (autoclean) [lp]
autofs4                16248   0 (autoclean) (unused)
ipt_REJECT              4600   1 (autoclean)
ipt_state               1080   1 (autoclean)
ip_conntrack           27208   1 (autoclean) [ipt_state]
iptable_filter          2412   1 (autoclean)
ip_tables              15904   3 [ipt_REJECT ipt_state iptable_filter]
sr_mod                 17784   0 (autoclean)
microcode               5688   0 (autoclean)
ide-scsi               12336   0
ide-cd                 33920   0
cdrom                  32416   0 [sr_mod ide-cd]
sg                     36140   0 (autoclean)
sd_mod                 14096   0 (autoclean)
usb-storage            74496   0
scsi_mod              107308   1 [sr_mod ide-scsi sg sd_mod usb-storage]
keybdev                 2944   0 (unused)
mousedev                5524   1
hid                    22244   0 (unused)
input                   5888   0 [keybdev mousedev hid]
ehci-hcd               20008   0 (unused)
usb-uhci               25740   0 (unused)
usbcore                77600   1 [usbserial usb-storage hid ehci-hcd usb-uhci]
ext3                   85864   1
jbd                    50956   1 [ext3]

09-01-2009	#6 (permalink)
coopstah13 Linux Guru Join Date: Nov 2007 Location: NH, USA Posts: 1,756	try inserting the module manually, you have to be root to do this Code: modprobe 8139too

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