STRANGE SHUT DOWNS

[Jaime Thomas]

Speaking of memtest86, its handily on your Ubuntu LiveCD disk (Edgy for
sure, not so sure about Feisty, but should be).

On 4/2/07, Simon Dawe <simondawe at gmail.com> wrote:
>
> You might also want to run a memory test.  I had a similar problem that I
> thought was being caused by software, but it was actually a stick of ram
> that had gone way south.
> I use memtest86 to check for any memory problems.
> http://www.memtest86.com/
>
> On 4/2/07, Peter Whittaker <pwwnow at gmail.com > wrote:
>
> > On Sun, 2007-01-04 at 19:10 -0400, Maurice Murphy wrote:
> > > I usually leave my computer on 24/7.  My power settings are set at
> > > Never/Never.  Yet, for some reason or other, after a period of
> > > inactivity, ubuntu reverts to its login screen.  I've had a look
> > > at my BIOS settings and everything seems normal.  What gives?
> > >
> > > Has anyone experienced the same problem, or should I file a bug
> > report?
> > > I'm running Feisty Beta, fully updated.
> >
> > There are some known problems with certain machines overheating and
> > shutting themselves down (the kernel shuts down to prevent damage to the
> >
> > machine). For example, there's https://launchpad.net/bugs/22336
> >
> > What should you do next? Hmm, that's a tough one. Depending on far you
> > feel like going to triage, you can review that bug report and try to
> > determine if it applies to you (refer to [1], below).
> >
> > You can also try searching launchpad for keywords such as unexpected
> > reboot, unexpected shutdown, surprise reboot, surprise shutdown, etc.
> >
> > Another thing to check is that the CPU heatsink is properly attached and
> >
> > bonded. Please note that I am not a hardware guy, so I cannot help you
> > much with that. There is a device glued to your CPU that is covered with
> > fins or prongs and its whole purpose in life is to dissipate heat from
> > the CPU. If it as come loose, or was never properly attached, the CPU
> > cannot cool properly, and the machine may shutdown occasionally.
> >
> > The odd thing is that your session is ending whilst the machine is idle,
> >
> > and one would think an overheating problem more likely when the machine
> > is very active.
> >
> > BUT! If you are running Gnome screensaver, your machine is NEVER really
> > idle: Some of those screensavers are very CPU intensive, which is why
> > I've set my screensaver to blank screen. Try that, and if the problem
> > persists, it's probably something else. But if the problem goes away,
> > well, it might suggest an overheating problem.
> >
> > Those are my $0.02, others may have more useful thoughts,
> >
> > pww
> >
> > [1] There is a quick way to determine if this bug is NOT affecting your
> > machine - try this command in a terminal window:
> >
> > cat /proc/acpi/processor/CPU0/throttling
> >
> > If the result is NOT "<not supported>", then your machine is NOT subject
> >
> > to this bug. Sorry for the triple negative... ...to put it another way,
> > if you try that command and the result is "<not supported>", then your
> > machine MAY be subject to that bug (not IS, but MAY) - hence all the
> > negatives the first time round (if not "<not supported>", not the same
> > bug). More work would be required to determine if that bug is in fact at
> > work, hence the triple negative, which is an easy way to eliminate that
> > particular bug.
> >
> >
> >
> >
> >
> > --
> > ubuntu-ca mailing list
> > ubuntu-ca at lists.ubuntu.com
> > https://lists.ubuntu.com/mailman/listinfo/ubuntu-ca
> >
> >
> >
>
> --
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>
>
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