[PlanetCCRMA] another nvidia driver problem

[Fernando Lopez-Lezcano]

On 03/21/2015 07:52 PM, Dale Kazakore Powell wrote:
>
>
> On 22/03/15 07:47, Fernando Lopez-Lezcano wrote:
>
> Is it worth it? I don't know. In any case, it properly turns off the
> NVidia GPU when not used, so the battery life should be much better.
> Actually the older rt kernels I'm running as I type this on fc20 do not
> turn it ON at all, and that is why the temperature of the hand rest to
> the left of the trackpad was cool with those kernels.
>
> Really I should quote from the earlier message about the hot section to the left of the trackpad but I deleted it yesterday...
>
> Not directly related but I have a Lenovo X230, which as far as I can tell only has the inbuilt i5 Intel graphics (unless I'm mistaken.) I have always found the temperature to the left of the trackpad, above the ExpressCard slot, get very hot at times (too hot to keep your hand on at extremes.) It has never seems to rely on anything, such as software running or load present, but seems to be fairly random.
>
> Being right above the Expresscard and not far away from the fan exhaust and assumedly the GPU I have always assumed the heat is coming from the North Bridge but never managed to find any reason why it might be going into overdrive at point (running Top or Task Manager at these times never gave any pointers.)
>
> Just mentioning this as both laptops are Lenovo and heat is coming from the same area so it might be related. Sure power going to any secondary, unused device in your system should help your personal case anyway, even if it's not the soul/main cause of the heat. :)

Thanks, if you look at - for example - this page:

http://www.laptopultra.com/guide/how-to-disassemble-lenovo-thinkpad-w540-to-remove-keyboard-and-clean-cooling-fan/

you will see two heat pipes going to the fan assembly, one coming from 
the left (as viewed in the picture), that one is the processor, and one 
coming from the bottom right (which is the left hand side of the 
trackpad) and that one is, I presume, the video chipset.

Something similar can be seen here for your model:

http://www.myfixguide.com/manual/lenovo-thinkpad-x230-disassembly-clean-cooling-fan-remove-keyboard/

Looks like there is only one set of heat pipes going to the processor 
(no separate high power video chipset) and the location suggests that is 
the source of the heat you mention.

-- Fernando