Spurious thermal shutdowns on Dell Studio 1557
Ian Smith
smithi at nimnet.asn.au
Sat Apr 3 14:59:31 UTC 2010
On Sat, 3 Apr 2010, Bartosz Fabianowski wrote:
> I have tried spoofing Windows Vista - no joy, nothing changes.
>
> Overriding the _OS variable had no effect as the DSDT actually checks _OSI. I
> applied the patch in kern/121504 and overrode _OSI with "Windows 2006".
> Unfortunately, this had no effect on thermal settings at all.
>
> Any other ideas for what to try?
No, apart from maybe overriding _CRT and/or _PSV, perhaps swapping them?
You called changing these a hack, but a hack's fine if it works :)
My Thinkpad T23 has 90C _PSV, 96C _CRT, but I've yet to see it hit 90C;
the last buildworld got it to about 86C, and that was in our summer.
Perhaps see if you can get it to start passive cooling at say 80C, with
_CRT set at maybe 90C, to see whether passive cooling handles the load?
Apart from feeding it a can of air, hopefully someone else has an idea?
cheers, Ian
More information about the freebsd-acpi
mailing list