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network card trouble mac address is null

Hi everyone,

My eth0 is gone..
my loabtop is a thinkpad a20m running ubuntu kernel 2.6.35-28-generic
the internal nic is a e100
ether.cable is plugged in and we can see lights
on the switch and behind the labtop.
it's using dhcp.

lshw -C network result :
* -Network UNCLAIMED
   description : Ethernet controller
   product : 82557/9/8/0/1 ethernet pro 100
   ... and so on

lspci result:
00.03.0 ethernet controller : intel corporation blablabla

lsmod|grep e100 result:
e100    30356    0
mii    4425    1

modprobe e100 result:
nothing

ifconfig -a result:
irda0 ...
lo ...
wlan0 ...
but no eth0

ifup eth0 result:
SIOCSIFADDR : no such device
the usual no such device messages following ...

desmg: grep e100 result:
e100: intel(R) Pro/100 network driver, 3.5.24-k2-NAPI
e100: 000:00:03.0: PCI INT A -> Link[LNKC] -> GSI 11 (level, low) ->IRQ 11
e100: 000:00:03.0: (unregistered net device): EEPROM corrupted
e100: 000:00:03.0: PCI INT A disabled
e100: 000:00:03.0: probe of 000:00:03.0 failed with error -11

/etc/network/interfaces contain
auto lo
iface lo inet loopback

#add manually by me to try to solve the problem but no show...
auto eth0
iface eth0 inet dhcp

/etc/modules contain
no reference to eth0 or e100

/etc/udev/rules.d/70-persistent-net.rules contain
no reference to eth0

still not satisfied with a dead nic I tried slitaz 2.0 and
tried ifconfig eth0 hw ether 00:a0:c9:01:02:03
and it worked

anyone any suggestion ?
thanks+

mojo

Administrator

Registered: 2011-03-29

Posts: 2,174

Re: network card trouble mac address is null

Found here:

https://help.ubuntu.com/community/Lubuntu/Documentation/FAQ

Problem:

Intel eeprom100 gives in dmesg: e100 0000:02:08.0: (unregistered net_device) EEPROM corrupted

Try this:

sudo bash -c ‘echo “options e100 eeprom_bad_csum_allow=1″ >> /etc/modprobe.d/options’