Hi all,
On 10/15/06, Nicolas Boichat <[EMAIL PROTECTED]> wrote: > Hello, > > Ludovic Rousseau wrote: > > On 15/10/06, Nicolas Boichat <[EMAIL PROTECTED]> wrote: > > > >> I added support for fan control in applesmc. I use the attached script > >> to control the fans, as the left side is almost always warmer, I set the > >> speed of the left side to 2x the speed of the right side (controlled by > >> SMC), and set the minimum speed to 3500 RPM instead of 1000 RPM on that > >> fan. > >> > > > > Works fine. > > > > What happens if you set both fan to manual setting at the minimum > > speed and you load the CPU? > The temperature will get higher and higher (yes, higher than usually) .-) > > Is there a security to that will increase > > the fan speed automatically? > No. If it's in manual mode, it's in manual mode. I don't think the SMC > controller will take care of that (I just tried it now, maybe there is a > protection). A good cool application would be monitoring cpu temp + load + fan speed and adjust the fan speed dinamically, but in a more agressive way than what we have today (since nowadays, running a macbook (pro) on a laptop during extended (+30m) periods of time is unconfortable due to the heat) It seems that we have all the ingredients that we need: 1- a way to check cputemp (coretemp) 2- a way to check/modify fan speed 3- a way to check system load. One (questionable) problem to be solved is to normalize the way we do the first 2 in linux, for every kind of machines with these capabilities. (or at least a good subset). What do you guys think? > > The CPU will just reset using its > > internal temperature protection? > > > Probably the system will first slow down (throttle), and then hang if > the temperature is too high. (That's what the Pentium 4 does, see below) > > Is it possible to burn the CPU and/or the video chip by doing such > > stupid things? > > > I think things like that don't happen on modern systems anymore : > http://www.tomshardware.com/2001/09/17/hot_spot/index.html (look at the > video, it's quite impressing). So I'm quite sure the CPU won't burn, as > it has a temperature sensor integrated in the chip. For the GPU, I don't > know, but I suppose (and hope) it is the same. > > Best regards, > > Nicolas -- Miguel Sousa Filipe ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Mactel-linux-devel mailing list Mactel-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mactel-linux-devel
