Is there a way to see the CPU temperature of my MDD under MorphOS?
Thanx in advance for any tip...

Not yet, perhaps one day in the future...

maurensen wrote:,
Quote:

Yes, but not on the screen through MorphOS3.1. You can buy a Fan Control assembly that comes with several temperature sensors and a built-in LCD temperature display which can be set to rotate through all of the sensors, showing each sensor for a few seconds. These units also have controls to increase or decrease your fan speeds either manually, or automatically, but all of them that control the fans through software would only work automatically on Windows, and maybe a couple would work on MacOSX or Linux as well.

When I was thinking of ways to quiet my MDD PowerMac, I considered getting one of these Fan Controllers with a temperature display and sensors, but ended up just replacing the main fan with a quieter replacement fan that has almost the same CFM rating as the original fan.

I think some work has been done, or is being done for temperature management on the G4 PowerBook, so maybe they have put some code that can read the temperature sensor in that model into the MorphOS3.1 release. Not sure if this can be expanded to read the temp of any other Mac models, but if I am correct and they have done this temperature management code for the G4 PowerBook's, maybe there is a slight possibility that a future version of MorphOS3.x could have the ability to read the temperature sensor in your MDD PowerMac.

Not sure if this would ever be a priority for any of the MorphOS Dev. Team members to work on though. Maybe if one of the Team members is interested in over-clocking their G4 PowerMac towers, they will work on adding such code to a future version of MorphOS3.x?

Are you asking this question because you have over-clocked your MDD, or because you have modified the cooling system fans on your MDD and you are concerned about the level of heat produced by your G4, or dual G4's in your MDD? (I have swapped G4 CPU modules & over-clocked my MDD to make it a single 1.58GHz G4 CPU, instead of the original dual 1.25GHz G4 CPU module)

> I think some work has been done, or is being done for temperature management
> on the G4 PowerBook, so maybe they have put some code that can read the
> temperature sensor in that model into the MorphOS3.1 release. Not sure if this can
> be expanded to read the temp of any other Mac models, but if I am correct and they
> have done this temperature management code for the G4 PowerBook's, maybe there
> is a slight possibility that a future version of MorphOS3.x could have the ability to read
> the temperature sensor in your MDD PowerMac.

You are correct regarding the PowerBook, see:

"MorphOS handles most of the hardware found in PowerBooks, namely:"
[...]
* Temperature and fan control
[...]"
http://www.morphos-team.net/faq

And then there's this since MorphOS 3.0:

"Delivers support for 4 temperature sensors in a PowerBook and 1 in a PowerMac."
http://www.morphos-team.net/releasenotes/3.0

That's true, Andreas, the only missing thing is actually a small application to hook up to our sensors API and display the results. Any takers? :)

@amigadave
Yes, I've tweaked the fans and I'd like to see the cpu temp under mos without switch to OS X where there are several apps to display cpu temp.
BTW seems to me that the cpu temperature under OSX is Always superior to MorphOS maybe bacause mos use only one processor.
Nevermind, I'll run Mos for some hours then I'll fire up OS x to see how much hot is the beast!
:-)
Thanx mates!

jacadcaps wrote:,
Quote:

I am working on learning the C programming language as fast as I can, so hopefully within a few weeks or months, I will be able to work on small programs like this.

If you want to give me some pointers on how to get started on this small programming project, I will be happy to give it a try and work on it. I can send you back the source code I write and you can review it and tell me if I am going in the right direction or not. Something like this should be easy to figure out if the sensor code is already done and I just have to write code to display what the sensor is reading.

Might be a perfect first project for me to attempt.

@maurensen,

MorphOS3.1 can run warm if you are stressing the G4 at 90% to 100% CPU load for long periods, but you are right, it should only be heating up one of the two G4's in your system.

If you have another computer to run MacOSX on, I suggest you do what I did and find a single 1.25GHz G4 CPU module for the MDD model of the G4 PowerMac. Then I will help you over-clock it like I did. It will then run MorphOS3.1 faster AND cooler, because you will only have one G4 generating heat in the computer, instead of two.

I have my single G4 running at 1.58GHz which is probably the easiest speed to switch to, as all you have to do is remove 2 or 3 resistors and no voltage bump is required. I was thinking of trying to over-clock it to 1.67GHz, but don't think it is worth the extra trouble, so might stay with this 1.58GHz speed instead. I am using the Copper heat sink from the dual 1.42GHz G4 MDD PowerMac model, and I have already removed the noisy main fan and replaced it with a "Silent" fan of the same size and as close to the same CFM rating as I could find. As soon as I can, I will check the temperature of my single 1.58GHz G4 MDD PowerMac. From my first test run, it seems to run very cool, but I haven't stressed it by running something that will push the G4 CPU to 90% or more for a few minutes.

[ Edited by amigadave 20.09.2012 - 23:22 ]

Thanx but I don't want to overclock my mac because it's very fast for me under morphos and I want the dual processor because sometimes I use Iphoto on the mac side and the 2nd processor under OS X is a very nice boost in performance respect the single model.
Thanx again for all your suggestion guys!

ah, just for information under morphos the temperature (measured after a reset and a boot under os X) is always under 50 celsius, then it starts to became hotter under OS X