@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
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