Nicolas, sorry if I misquoted you ... I was just trying to convey my understanding of what you said.
I'm in OS X now with my GPU heatsink at 51 C and my GPU at 48 C and both fans hovering at 2000 rpms so its curious that Sven's rev up at this temperature. To get my fans to start in OS X I really have to stress the CPU. Here are my OS X temps CPU A 55 Heatsink A 49 GPU heatsink 50 Heatsink B 40 GPU 46 Enclosure 34 It would be nice to have an explanation of the applesmc temperature readings in linux - perhaps these are described in the code which I don't have handy but I'll look later. Mario it might be possible to test your idea by setting up a script to poll and then plot temperature/fan speed every minute for an hour or so (as I was suggesting in an earlier email) and then run this script in two different ways. First just boot straight into linux and see what it does. Then boot into OS X and then reboot into linux. Maybe rebooting won't reset the SMC so it will still have the OS X settings. If I write up a script I'll try and do this. cheers, Sheer On 3/29/07, Mario Oschwald <[EMAIL PROTECTED]> wrote: > Nicolas Boichat wrote: > > > > I did some debugging of the OS X kernel a while ago, and the only > > sensors OS X is polling is the light sensors, to adjust the keyboard > > backlight. > > > > Actually, if you look at the assembly code of the AppleSMC modules in OS > > X, there is no single reference to the fans and temperature keys (I got > > these keys from the source code of smcfancontrol (OS X app, no sure of > > the exact name))). > > > I think this confirms pretty well that even under OS X the SMC controls > the fans directly (and not some kind of software that polls temperature > keys regularly and adjusts fan speeds). I really don´t think that there > are more "hidden" temperature sensors that are used just for fan control. > > But maybe the SMC can be configured to different sensitivity/threshold > levels. That way OS X could set these levels once during boot/initialization > and let the SMC do the rest. We under Linux would meanwhile be stuck > with the default levels that would of course be the most conservative and > result in much earlier fan activity. I have no idea of these things but > maybe it would be possible to dump all of the readable/writable state of > the SMC under Linux and OS X and to reverse-engineer areas whose use have > not yet been determined. > > I personally set the fans manually to 3000 RPM when not doing anything > resource intensive and have fared very well with that. > > Mario > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Mactel-linux-users mailing list > Mactel-linux-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mactel-linux-users > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Mactel-linux-users mailing list Mactel-linux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mactel-linux-users
