RE: Page fault in kernel when using CD, BSD 7.2

2010-08-12 Thread Graeme Dargie 


-Original Message-
From: Mark Terribile [mailto:materrib...@yahoo.com] 
Sent: 12 August 2010 03:32
To: freebsd-questions@freebsd.org
Subject: Page fault in kernel when using CD, BSD 7.2


Hi,

In the last two days I've had two nasty problems on two machines.  The
first started dumping core on epiphany, apparently when the Javascript
garbage collector ran.  I found that the fan on the video card was
running and stopping.  I jury-rigged a fan over it (until I get a new
one) and the problem has gone away.  Probably nothing to do with the
second problem,
but who knows?

Second problem: on a machine (Core 2 Quad, 2.24 GHz) the CD/DVD drive
has
started to give me page faults in the kernel.  The "press any key on the
console" to halt the reboot does not work.  I've been using this drive
on
and off for months.  I've checked all the connections (PATA), blown out
the machine (the temperatures reported by sysctl range from 50 to 59
degrees from core to core), and put a different power lead into the
drive.

Sometimes the console gets large transfer errors (I don't want to excite
the problem right now, as the fsck is finally running) before the fault.
The disk transfers don't work, the drive won't open, the process can't
be interrupted, etc.

The error usually comes a few minutes after the drive stops working.

Yes, the processor is running a little hot, but I don't think it's
dangerous and its been like this for months.  I have a compact heat
sink on it and the interaction between the rotor/stator fan and the
CPU speed control reduces the speed too much at low load.  But again,
it's been like that for months.

Does anyone have any suggestions?  Is it worth trying a new PATA or SATA
drive?

Mark Terribile
materrib...@yahoo.com


Might be worthwhile running memtest on the machine.

Regards

Graeme


  
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Re: Page fault in kernel when using CD, BSD 7.2

2010-08-12 Thread Mark Terribile 

Hi,

> Second problem: on a machine (Core 2 Quad, 2.24 GHz) the
> CD/DVD drive has started to give me page faults in the kernel.
> The "press any key on the console" to halt the reboot does
> not work.
> 
> Okay, now it's happening with nothing but the fsck
> running.
> It takes maybe fifteen minutes.

Okay, I've got a suspect.

I got it past the fsck by going ino Single User and doing
the file systems one disk at a time.  (Two on this
machine).  I suspect the power supply has gone marginal.

My spare is much bigger than the what I need for this machine;
I'll wait on a replacement if I can.  And I'll let you all
know.

Thanks to those who've written.

Mark Terribile
materrib...@yahoo.com



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Re: Page fault in kernel when using CD, BSD 7.2

2010-08-13 Thread Chris Whitehouse 

Mark Terribile wrote:
AMI BIOS.  The NB heatsink is barely warm (fan cooled), the

not necessarily a good sign, you would get this if the heat from the cpu 
is not getting transferred to the heatsink. Remove, clean, apply new 
heat transfer compound, make sure the heatsink is actually seating 
properly, not getting lodged on something.


Chris
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