Re: 5.0beta won't boot on a Dell Dimension 8400

["Steven M. Bellovin" <smb%cs.columbia.edu@localhost>]

On Sat, 29 Nov 2008 22:42:02 +0100
Manuel Bouyer <bouyer%antioche.eu.org@localhost> wrote:

> On Sat, Nov 29, 2008 at 04:39:04PM -0500, Steven M. Bellovin wrote:
> > On Sat, 29 Nov 2008 22:31:53 +0100
> > Manuel Bouyer <bouyer%antioche.eu.org@localhost> wrote:
> > 
> > > > The last few lines on the screen (with -current failing) are:
> > > > 
> > > > IPsec: Initialized Security Association Processing
> > > > ahcisata0 port 0: device present, speed: 1.5GB/s
> > > > NMI ... going to debugger
> > > > NStopped in pid 0.2 (system) at
> > > > netbsd:sse2_idlezero_page+0x18: jnz
> > > > netbsd:sse2_idlezero_page+0x46
> > > > 
> > > > Is there some kernel option or patch I could try to make the
> > > > kernel go to the backtrace function immediately?  
> > > 
> > > options DDB_COMMANDONENTER="tr"
> > > in the kernel config file would do it. But in fact I don't think
> > > it would give interesting results, as the NMI seems to be
> > > asynchronous; as if some device did an invalid memory access or
> > > something like that.
> > > 
> > > Do both systems have the same amount of RAM ? how much ?
> > > 
> > They both currently have 3GB; both displayed the same symptoms when
> > they both had 1GB.  (A very recent memory upgrade.)
> 
> And I guess they have the same memory modules in the same slots.

Yup.

> It would be interesting to compare the memory map provided by the
> BIOS, but I'm not sure how to get this (maybe a tool like memtest
> would show it?)
> 
I could boot into Windows and run the tool from crucial.com, I think.
I don't recall seeing anything from memtest, which I ran when I
installed the new RAM.


                --Steve Bellovin, http://www.cs.columbia.edu/~smb