Re: Lockup since 2.4.4 when switching from X to console

["Eric Sandeen" <sandeen@sgi.com>]

Juri Haberland wrote:

> On all test I used the kgcc. Every time besides the last (2.4.9) test I
> compiled the XFS-enabled kernel with kdb, but not even the kdb kicked in.
> 
> Any hints on how to debug? I really would like to use XFS on this system...

hi Juri - 

I really wouldn't suspect XFS, but it sounds like you do have it
narrowed down.  :)  

By complete lockup, do you mean NOTHING works, or is just the console
hung up?  Can you access the machine over the network?  If so, can you
see what is running via "ps" from a normal network login?

If you can't get to it over the network, what I would do is enable KDB,
and hook up a serial console if you can... then when the machine locks
up, invoke KDB yourself (CTRL-A on the serial console), and type "ps" to
see what's running.  You could try hitting the "pause" key on the normal
console, but if the machine is in X, you won't see the kdb prompt.

-Eric

-- 
Eric Sandeen      XFS for Linux     http://oss.sgi.com/projects/xfs
sandeen@sgi.com   SGI, Inc.