"eth0: unknown interface" with newly-compiled kernel

I built a new kernel from the 2.6.25.6 sources, installed it, the
modules and the new System.map. But for some reason it doesn't want
to do anything ethernet. The new kernel comes up ok otherwise. I
know I configured ethernet (of various kinds) in to the kernel (I
started with the default configuration and didn't remove anything
network-related).

If I type "route", all that comes up is the loopback device. If I
type "ifconfig eth0 up", it comes back with "eth0: unknown interface:
No such device".

"lspci" seems to know about my network card:
02:00.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970
[PCnet32 LANCE] (rev 10).

/var/log/messages doesn't say anything about a network interface.
However, dmesg seems not unhappy:
loop: module loaded
Intel(R) PRO/1000 Network Driver - version 7.3.20-k2
Copyright (c) 1999-2006 Intel Corporation.
e100: Intel(R) PRO/100 Network Driver, 3.5.23-k4-NAPI
e100: Copyright(c) 1999-2006 Intel Corporation

strnbrg wrote:
> I built a new kernel from the 2.6.25.6 sources, installed it, the
> modules and the new System.map. But for some reason it doesn't want
> to do anything ethernet. The new kernel comes up ok otherwise. I
> know I configured ethernet (of various kinds) in to the kernel (I
> started with the default configuration and didn't remove anything
> network-related).
>
> If I type "route", all that comes up is the loopback device. If I
> type "ifconfig eth0 up", it comes back with "eth0: unknown interface:
> No such device".
>
> "lspci" seems to know about my network card:
> 02:00.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970
> [PCnet32 LANCE] (rev 10).
>
> /var/log/messages doesn't say anything about a network interface.
> However, dmesg seems not unhappy:
> loop: module loaded
> Intel(R) PRO/1000 Network Driver - version 7.3.20-k2
> Copyright (c) 1999-2006 Intel Corporation.
> e100: Intel(R) PRO/100 Network Driver, 3.5.23-k4-NAPI
> e100: Copyright(c) 1999-2006 Intel Corporation
>
>
1. Make sure that PCNET32 is set in your .config file
2. Try eth1 or eth2

Robert

On Jun 30, 2:08*pm, strnbrg <strnbr...@gmail.com> wrote:

> "lspci" seems to know about my network card:
> 02:00.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970
> [PCnet32 LANCE] (rev 10).
>
> /var/log/messages doesn't say anything about a network interface.
> However, dmesg seems *not unhappy:
> * loop: module loaded
> * Intel(R) PRO/1000 Network Driver - version 7.3.20-k2
> * Copyright (c) 1999-2006 Intel Corporation.
> * e100: Intel(R) PRO/100 Network Driver, 3.5.23-k4-NAPI
> * e100: Copyright(c) 1999-2006 Intel Corporation

The e100 driver is not the correct driver for your network interface.
You need either the lance driver or the pcnet32 driver. Make sure both
of them are compiled into your kernel or loaded as modules and try
again.

The config entries are:

config PCNET32
tristate "AMD PCnet32 PCI support"
depends on NET_PCI && PCI
select CRC32
select MII
help
If you have a PCnet32 or PCnetPCI based network (Ethernet)
card,
answer Y here and read the Ethernet-HOWTO, available from
<http://www.tldp.org/docs.html#howto>.

To compile this driver as a module, choose M here. The module
will be called pcnet32.

and

config LANCE
tristate "AMD LANCE and PCnet (AT1500 and NE2100) support"
depends on ISA && ISA_DMA_API
help
If you have a network (Ethernet) card of this type, say Y and
read
the Ethernet-HOWTO, available from
<http://www.tldp.org/docs.html#howto>. Some LinkSys cards are
of this type.

To compile this driver as a module, choose M here: the module
will be called lance. This is recommended.

I believe it's the PCNET32 driver that you want, but I'm not 100%
sure.

DS

Thanks, that worked!