Hi all,
I am a newbie to linux and this is my first mail to
this group. We
have a PC running Centos version 2.6.9-42.0.2.EL. I
needed
to load a router software called Nistnet and it would not
run
properly. It is looking for RTC (Real Time clock) support as
a
module.
I 've gone through the LKM Loadable Kernel module
support under
Documentation pages of Linux.org and did the
following:
located the kernel release:
uname
-r
2.6.9-42.0.2.EL
next navigated to the
/usr/src/kernels/2.6.9-42.0.2.EL-i686 (this is
where the kernel is located on
this PC)
then issued a make menuconfig command
It took me to through the menu and under device
drivers> character
device drivers i chose the Real time clock support as a
module.
Then exited out of the menu and did make
modules_install.
Then rebooted.
However, the PC while rebooting showed some
messages like
fast_rtc: lost around 26 interrupts at 8192Hz.
this keeps on appearing on the screen for a while
before reboot and
after the system reboots, I see that at boot time, the
ethernet
interface does not come up.
It gives the follwoing
error:
Device eth0 has a different MAC address than expected,
ignoring.
Also i get the following error messages :
Cannot open
/lib/modules/2.6.9-42.0.2.EL/kernel/arch/i386/kernel/
microcode.ko no such
file or directory
and cannot
open
lib/modules/2.6.9-42.0.2.EL/kernel/drivers/net/sunrpc/sunrpc.ko
no
such file or directory.
if I do an updatedb command and then slocate
microcode.ko, I still see
it under this directory. However, if I navigate to
the kernel
directory under 2.6.9-42.0.2.EL , there is nothing under it. If
i
issue ls -al there are a totoal of 16 entries but I cant see
them.
Can any one please tell me how to revert back to
the original
configuration or to undo these changes? I have copied the
config-2.6.9-42.0.-EL release from Centos site to the /boot thinking it would
revert to the original default config. Then I rebooted the PC but I still get
the error-Eth interface has a different MAC id than expected or unable to bring
eth0 up.
So, at the boot time, I am currently choosing
the kernel version 2.6.9-32-EL. With this I am able to browse the Internet.
But I want to make the version 2.6.9-42-EL up. Please some one help
me!!
Thanks,
Padmaja