Hey Andy sounds like you have a heap of fail on your hands.   I have
had a patch for a few weeks now.  Ubuntu's fan speed is too slow, and
this is the cause of 99% of the 100 posts on this thread. You probalby
can't reproduce the issue because your laptops are not powerful
enough.  I can't even run VMWare on my intel dual 2.4ghz dell for more
than 20 min without speeding up the fan.   For me its not a matter of
reproducing this,  it is a huge barrier that i faced every day until I
fixed it.   People are really pissed off,  and i was one of them.

peace

On Thu, Jul 9, 2009 at 2:28 AM, Andy Whitcroft<email address hidden> wrote:
> @Michael -- there are many bugs reported against the kernel.  This one
> came to our attention as there were a number of duplicates which raises
> its profile and its priority for attention.  I actually said that I had
> tested it on all the kit I had here and had not been able to reproduce
> it.  That included on two laptops neither of which show the issue.  This
> is not an issue affecting every laptop therefore not trivial to isolate.
> We have now since found one person who has a reproducible trigger for
> what appears to be this behaviour and they are attempting to bisect the
> kernel to find the cause.  The problem is looking like it is in mainline
> also, and likely was introduced in the 2.6.28 release, and so you may
> well hit the issue in any distro.
>
> For those of you who have experienced thermal shutdowns could we get your acpidump and dmidecode output attached to this bug, run the two commands below and attach the result to this bug:
>    sudo acpidump -o acpidump.txt
>    sudo dmidecode >dmidecode.txt
>
> For those of you comfortable testing kernels we currently suspect the
> problem was introduced in v2.6.28 mainline, you might test the v2.6.27
> and v2.6.28 kernels from the Mainline Kernel repository to confirm it is
> not present in v2.6.27 and is in v2.6.28. Those kernel can be found
> here:
>
>    http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.27/
>    http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.28/
>
> and instructions found here:
>
>    https://wiki.ubuntu.com/KernelTeam/MainlineBuilds
>
> If the problem is found to be in v2.6.28 and not in v2.6.27 then it
> would also be worth testing the following stable updates kernels also:
>
>    http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.27.23/
>    http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.27.12/
>
> In all cases please report your testing results back here.  Thanks.
>
> --
> Ubuntu 9.04 laptop overheat and shutdown
> https://bugs.launchpad.net/bugs/370173
> You received this bug notification because you are a direct subscriber
> of a duplicate bug.
>
> Status in “linux” package in Ubuntu: In Progress
>
> Bug description:
> Ubuntu 9.04, fresh install on Acer Aspire 5005.
> Not sure about package, but it seems the problem is with CPU frequency adjustment or fan control.
> Laptop shuts down right in the middle of CPU-greedy operation overheated. I haven't seen it before (since 7.10).
> The issue is discussed at several forums (eg. http://ubuntuforums.org/showthread.php?t=1130450)
>
> ----
>     *-cpu
>          product: AMD Turion(tm) 64 Mobile Technology ML-37
>          vendor: Advanced Micro Devices [AMD]
>          physical id: 1
>          bus info: cpu@0
>          version: 15.4.2
>          size: 2GHz
>          capacity: 2GHz
>          width: 64 bits
>          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt x86-64 3dnowext 3dnow up pni lahf_lm cpufreq
>