On Tue, 14 Nov 2017 14:09:51 -0500 Giles Orr via talk <talk@gtalug.org> wrote: <sanity snip>
keyword, 'may' on my notebook the main fan has two pins but it has variable speed... so i guess ymmv so +1 for checking the manual or contact manufacturer website/support
manual. As this is a laptop you may find it hard to locate information about fan control. You could add a circuit to do variable speed control of the fan but it may be difficult, if not impossible, to fit it in to the laptop case. again depending on notebook/laptop model... many of the older models (before space became such a fixating factor) actually has lots of crawl space, just yesterday i added some custom components to one of my old HP's and recall thinking how cool it is that it can all fit inside the case :) As I mentioned in my initial post, the fan speed is variable, so it seems clear it's controllable. Just not - so far - by Linux.
so, lm-sensors (sensors-detect) / pwmconfig & sensors and/or fancontrol (https://linux.die.net/man/8/fancontrol) does not work? then, surely checking manual (for custom requirements) or contacting manufacturer is the only way to go, or am i missing something? on my linux fancontrol is enabled by default and with default config I also found this, which explains the tech behind fan control quite well: http://www.tomshardware.com/answers/id-2559018/fan-speed-control-pin-pin-pin... as you say, fan speed on your rig is variable, so afaik it is a question of 2-pin, 3-pin & 4-pin and your modules, config and software. hth Andre