[juneau-lug] capturing kernel messages

  • From: James Zuelow <e5z8652@xxxxxxxxxx>
  • To: juneau-lug@xxxxxxxxxxxxx
  • Date: Wed, 7 Jun 2006 05:11:29 -0800

I track Debian testing, and so things break from time to time in small ways.

I particularly notice that while booting, there are error messages that don't 
make it into dmesg.  This happened a lot after a major udev upgrade, and I 
had to change the syntax on some files.  Some of the errors were shown, but 
others I noticed while watching the machine boot and noting them on paper (if 
they didn't scroll by too quickly).

It is almost as if the dmesg is just capturing standard output, and not 
standard error.  Modules and drivers that send their errors to standard out 
get logged, the ones that go to standard error don't.  (I'm not really a 
kernel guy, I'm just guessing this is what is happening.)

Anyone know of a way to log ALL of the kernel messages displayed on screen 
during boot?

James
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