[CentOS] Problems with new kernels

Jeff Stacey
Thu, 08 Feb 2007 15:31:16 -0000

On Thu, 2007-02-01 at 13:45 +0100, Sebastian Schubert
wrote:
> Hi there,
>
> we have the same problem here on IBM x305 (all other servers run
> without problems).
> Logging in throug ssh results in an "key exchange blah blah"
failure.
> Did anyone else notice this behaviour ?
>
> On Thu, 2007-02-01 at 07:05 -0500, Thomas Dukes wrote:
> > Hello,
> >
> > I have been having problems using kernels since 2.6.9-34.0.2.  After
> > updating to a new kernel, my system runs, I'm guessing, 6 - 8
hours fine,
> > then becomes unresponsive.  For example, I installed the latest kernel
the
> > other evening, reboot for the changes and by morning, the system
appears to
> > be locked up.  Typing 'yum update' takes about 10 minutes to
execute.
> >
> > Not sure whats going on here but I'm stuck using 2.6.9-34.0.2.
This is a
> > centos 4.4 system on an IBM NetVista, 2.53 Ghz, 1GB RAM.  I have
noticed
> > when there is a kernel update, it downloads the huge memeory and smp
files.
> >
> > TIA
> >
> > Eddie
>
> --
> "In god we trust, the Rest we Monitor"
> Sebastian Schubert - RHCE
> Stadtsparkasse Munich
> Network and IT Security
> --------------------------
> basti-lists at sskm.de
>
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We discovered that some IBM Netvistas (and other models) have a buggy
APIC implimentation which seems to have problems with the APIC updates
in recent kernel releases. Boot your system with the 'noapic' flag. It
only seems to affect machines with IDE drives, if you have SATA, SCSI or
FC drives then you are fine.


--
Jeff Stacey
UNIX Administrator
James Richardson International