Re: Problems with system lockup

[kd1zd@xxxxxxxxxxx]

Thanks for all the responses.  After reading them, I realized I've seen more crashes in the last week, when I added a usb hard drive enclosure to the system.  I removed it to see igf the crashes are less frequent.

Also, I do run one of thr TNCs off of a USB to serial dongle, maybe that also has something to do with it.

I will at some point give the memory test a try.  That may also help pinpoint if there are other things that are problems.

Can any of you recommend a watchdog card?
------Original Message------
From: Gordon JC Pearce
Sender: linux-hams-owner@xxxxxxxxxxxxxxx
To: linux-hams@xxxxxxxxxxxxxxx
Subject: Re: Problems with system lockup
Sent: Nov 18, 2010 14:13

On Thu, 2010-11-18 at 10:42 -0800, Dave Platt wrote:

> -  Hardware problems on the motherboard, pure and simple...
>    bad DRAM, for example, or an overheating CPU due to a
>    fan failure, or overly-aggressive overclocking.  It
>    wouldn't hurt to install, and then run the stand-alone
>    MEMTEST86+ check (let it run overnight, at least) to
>    see if there are DRAM or timing problems.

This ^^^.  It smells hardware-y.  I'd be really surprised if JNOS could
do anything to hard-lock the system - typically even if something is
poking really low-level drivers the worst it will do is cause a kernel
panic.  Okay, that *will* basically lock up your system, but it should
be more informative than "just plain catatonic".

Very nearly all "just locks up" problems I've run across have been down
to dying memory or overheating CPUs.  In the past I've found that the
latter has been quite good for causing segfaults when the CPU is driven
hard, like compiling code or rendering video.

Gordon MM0YEQ

--
To unsubscribe from this list: send the line "unsubscribe linux-hams" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


--
Robert Thoelen, KD1ZD
Check out http://www.rtcubed.org/kd1zd,
packet radio in CT

Station phone: (860) 698-0502
Station email  kd1zd <at> rtcubed.orgÿô.nlj·Ÿ®‰­†+%ŠË±é¥Šwÿº{.nlj·¥Š{±þ¦³ø¡Ü}©ž²ÆzÚj:+v‰¨þø®w¥þŠàÞ¨è&¢)ß«a¶Úÿûz¹ÞúŽŠÝjÿŠwèf