Valent Turkovic wrote, On 02/21/2008 06:44 AM:
On Wed, Feb 20, 2008 at 4:26 PM, Jim van Wel <jim@xxxxxxxxxxxxx> wrote:
Hi there,
> How do I capture it? My desktop is frozen and I can't open the cli.
First try to get in a console with CTRL + ALT + F1 to see if your X is
just frozen and not the whole system. Because how could you know it's
really a kernel panic. If so, sometimes it's somewhere in
/var/log/messages if you are lucky. If not, disable the NetworkManager for
now and try to debug like loading and unloading the modules by hand. For
instance:
rmmod modulename
modprobe modulename
and see if it crashes.
Greetings,
Jim.
My caps lock led i blinking and everything is frozen... not even
CTRL-ALT-F1 is working. I believe this is a kernel panic.
I'll think it is not iwl3945 module, because it is loaded before gone
is starting... maybe it is something in NetworkManager or in some way
connected with AP using WPA encryption...
Valent.
Can you cause the fault by executing command line utilities?
if you can then:
boot in run level 3
cp /etc/inittab /etc/inittab.rl5
edit /etc/inittab to change the line:
id:5:initdefault:
to
id:3:initdefault:
then reboot the machine.
(when you get done with the test,
return this to the original setting)
[others may tell you how to do this with out
editing the file, I don't remember how to do it
reliably with out editing the file.]
login (on the command line)
execute the utilities that cause the fault.
hopefully you can now see the kernel telling you what went wrong.
You did have a pencil & pad of paper or digital camera handy did you not?
If you can't cause the fault with command line utilities, but have another
computer that you can host the display to (`ssh -X user@brakingmachine`), then
you can do the above procedure, but execute the utilities that cause the fault
while physically at the other computer.
reason for going to run level 3: no X to obscure the console when the kernel
burps up an OOPs or Panic, AND for some it is easier than finding another
computer to string a serial cable to or even an appropriate serial cable. (and
on some new computers there is no RS232 port anymore.)
--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter
