Hi Jean-Claude,
Flashing keyboard lights are the symptom for a general class of problems:
kernel panics. In order to fix this issue we first have to narrow down what is
going on. In order to do this I suggest three possibilities to capture some
logs at the time of the panic:
1) configure a serial console
This requires a serial port (not a usb adapter type) on the affected
machine, a second machine with a serial port (usb or not) and a null modem
cable
2) configure netconsole
This requires a wired network connection on the affected machine and a
second machine on which you can run ex. netcat.
3) configure kdump
This only requires configuring some extra packages.
As root, run
# zypper install yast2-kdump
# yast2 kdump
pick Enable kdump
in "Dump filtering" uncheck everything, this will reduce the
size of the dump file
You can find some information about configuring kdump here:
http://doc.opensuse.org/documentation/html/openSUSE/opensuse-tuning/cha.tuning.kexec.html#cha.tuning.kdump.basic.yast
Reboot. The next time there is a kernel panic, kdump will create a dump of
the system memory and store it in a subfolder of /var/crash (in the default
configuration). The screen may be garbled while the dump is taking place
and it may take a few minutes; the machine will restart automatically after
it is done. Once rebooted, tar-up the newly created folder (found under
/var/crash), give the archive a significant name, upload it to
ftp.novell.com/incomming and leave a comment in this bug entry with the
name of the file.
# cd /var/crash
# tar -jcf bnc738547-kdump-2012-03-27-11-39.tar.bz2 2012-03-27-11\:39/
# ftp -u ftp://ftp.novell.com/incoming/
bnc738547-kdump-2012-03-27-11-39.tar.bz2
This ftp has write-access only from the outside. Only people within SUSE
will be able to access your kdump.
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https://bugs.launchpad.net/bugs/908335
Title:
Kernel Hard Freezing Very Often
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