Comment 2 for bug 579665

Thanks very much, madbiologist. I've been told about a BIOS update before,
but I've also been warned that it could totally stuff up my computer. In
this part of the world, the electricity supply is very iffy at the best of
times, which I understand would make me more vulnerable to a problem during
a BIOS upgrade.

I don't wish to gamble on this basis -- I can think of better things to
spend my old age pension on (like food).

But thanks again for the thought.

On 13 May 2010 07:02, madbiologist <email address hidden> wrote:

> At least one user with this particular laptop solved this problem with a
> BIOS update.
>
> --
> Overheating triggers shutdown
> https://bugs.launchpad.net/bugs/579665
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in NULL Project: Invalid
> Status in Ubuntu: New
>
> Bug description:
> Dear Ubuntu people,
>
> I'm using Ubuntu 10.04, but I had the same problem with 9.10. Both of
> these systems were installed on a partition.
> Previously, I used Ubuntu 9.04 without problem, but this was NOT installed
> on a partition.
> My laptop came with Windows Vista pre-installed: I do NOT experience this
> problem when running Vista.
>
> (1) After a few minutes from a "cold" start, my laptop overheats and
> automatically shuts down. The "Core Temperature Sensor" indicates that it
> shuts down at 100 deg C. Other temperature sensors do not report any
> abnormalities.
> (2) If I re-boot IMMEDIATELY, the cooling fan starts and the Core temp
> quickly drops to approx 45 deg C, and I can run my laptop all day without
> any problems.
> (3) If I fail to re-boot immediately, or if I restart my computer before
> the sensor indicates at least 95 deg C, the computer will again suddenly
> shut down within only a few minutes due to overheating.
>
> My laptop is an Acer Aspire 5315, but I've seen lots of posts on various
> forums. Toshiba computers seem also prone to this problem when running
> Ubuntu - and I have noted that Acer computers use Toshiba fans.
>
> Everything I've read follows the same trend:
> (a) it seems that, when everything is cold or only warm, Ubuntu fails to
> instruct the fan to run, so it doesn't.
> (b) if the computer is already hot when it's switched on, the fan works
> perfectly. Presumably the computer has a separate thermostat to control
> this, since we know that Ubuntu isn't switching it on.
>
> I'm sure this has been reported millions of times before. It is a major
> problem, and certainly one which prevents people recommending Ubuntu to
> others.
>
> Thanks & regards,
> Tony
>
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