Re: FreeBSD 6.2-RELEASE always hang

From: Tom Evans <tevans.uk@xxxxxxxxxxxxxx>
Date: Thu, 29 Nov 2007 12:42:35 +0000
Sender: owner-freebsd-stable@xxxxxxxxxxx

On Thu, 2007-11-29 at 03:28 -0800, Unga wrote:
--- Michael Proto <mike@xxxxxxxxxxxxxx> wrote:

Unga wrote:
Hi all

I'm using FreeBSD 6.2-RELEASE on Intel P4 3.0GHz,
512MB Ram computer.

Its very irritatingly hangs very frequently, more
than
10 times a day. Do others find FreeBSD 6.2-RELEASE
always hangs? I simply cannot use it for any
serious
use, not even to send a mail, other than browsing
web.

I find it mostly when I try to move the mouse it
hangs. Upward and downward cursor keys press and
hold
also hangs, but not always. These may be just
coincidental. How do I find why it hangs? How is
the
stability of the upcoming 7.0?

Best Regards
Unga


I'm sure I'm not alone in this, but I'm running
several 6.2-RELEASE-p8
boxes (servers and laptop workstations) for several
months now without a
single lock-up. I'd first look into hardware,
testing memory, testing
the power supply, and checking CPU/chipset
temperatures as they have
often contributed to problems similar to what you
are describing. 6.2
has been working extremely well for me with no
stability issues that
weren't related to hardware problems.



Thanks for all the replies.

It may be a hardware issue. This is a more than four
year old computer. Btw, I forgot to mention this is
not a server, its running KDE, trying to use as a
desktop.

Any one of the hangs do not develop any core dump or
/var/crash/kernel.0 or /var/crash/vmcore.0. Just the
cursor disappear and keyboard does not respond. Only
switch off and on can bring the machine up.

Are there any hardware analyzing software that I can
run on FreeBSD, so that I could narrow down the cause?

Unga


Can you verify that the machine is actually dead? Do you have another
machine that you can hook up either to a serial console, or ssh into the
dead box? Weird X symptoms could lead to an unresponsive keyboard, with
the machine running just fine underneath X.

Just to re-enforce this, I have a colleague who is seeing this on his
Radeon-based Lenovo T43 (m300). The display blanks and cannot be
resurrected, even CTRL-ALT-BS does not help, but the system is alive.

Oddly, I also have a Lenovo T43 based system and it has never shown this
problem. It might be something in your xorg setup that is triggering it.

If your system is a Radeon, you might try booting with no xorg.conf
file. I have found that worked well for my system. Other possibilities
include hw.acpi.reset_video=1 (sysctl.conf) and acpi_video_load="YES"
(loader.conf).

I would like to figure out why my system has no issues while others
go off to never-never land.
--
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman@xxxxxx Phone: +1 510 486-8634
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