[tlinux-users:08297] Re: GPU Fan problems on P100/105 series laptops

Hi,

this is interesting, is this the reason for the P100 being quite hot in
the lower left corner of the keyboard?

And did you try the acpi=off boot? with what version of the nvidia drivers?

I have 1.0-9746, and when I boot with acpi=off, my X Server won't
come up. Didn't investigate the error messages yet.

The nvidia 1.0-9746 comes with a tool nvidia-settings, and that has
a Thermal Monitor section. There, the Slowdown Threshold is preset
at 115 degrees, and my current values of core and ambient temperature
are at 105 and 90 degrees.

Regs,
Jiri


On 1/9/07, Shaun Dennie <[email protected]> wrote:
> Hello,
>
> I've been using linux on my P105-SP6022 for some time now and there is one
> large problem that probably needs some information from Toshiba to fix.
> Specifically the nVidia 7900GS card is not properly supported by the linux
> nVidia drivers (nor the normal nVidia Windows drivers) because Toshiba uses
> a proprietary mechanism to control the fans on the graphics cards.  This is
> a pretty large problem because it essentially means that running linux on
> the machine will cause the graphics card to overheat fairly quickly because
> the GPU fans don't turn on (which may actually destroy the machine fairly
> quickly).  The problem can be avoided by booting linux with acpi=off (so the
> fans always run) but, that disables a lot of useful laptop functionality and
> is more of a workaround than a solution.
>
> I was wondering if some technical information could either be shared with
> nVidia, myself or the community as a whole so that drivers could be written
> to control the proprietary fan control mechanism that Toshiba uses in it's
> P100/P105 series of laptop's GPUs.  As it currently stands, it's very
> dangerous to install linux on these machines because it could do permanent
> damage to the graphics card without the GPU fans running.
>
> Thank you for any help you can provide,
>
>     Shaun
>