LinuxQuestions.org - Power Supply Fan will not stop

- Mandriva (https://www.linuxquestions.org/questions/mandriva-30/)

- - Power Supply Fan will not stop (https://www.linuxquestions.org/questions/mandriva-30/power-supply-fan-will-not-stop-197171/)

how do u instal the lm_sensors?

Well, you can use MDK's install utility under the system->configuration->Packaging (i think that's the order). and search for "sensor" (no quotes). You should see lm_sensors 2.8.4 listed. You can then install it and you will be prompted to enter the appropriate CD. MDK installs using rpms so you might be able to find a newer lm_sensor rpm by internet search.

Or, you can download the source from the URL, and compile yourself.

HTH,
Rich

thanks for the help rich, so how does this make the fan be queiter?

Well, lm_sensors uses the I2C bus to detect and communicate with health monitoring ICs. I personally think this exposes more health information the ACPI but I am no ACPI guru. Thus, it has the potential to control them and monitor them. They have a great detection routine that even provides a confidence score in helping to identify your PCs' helath monitoring chip type. In my case, the default lm_sensors with kernel 2.6.8 and 2.8.7 lm_sensors indentified my IT87 based PC health monitoring IC. By default, the fans went full on 100% PWM in linux yet XP was controlling them to a lower RPM (read much quieter). The fan noise at 4000+ RPM vs ~2000-2400 RPM is very noitceable. So I changed the code in it87.c to let my BIOS control the fan RPMs and recompiled lm_sensors and installed. Of course, I downloaded the specification for the it87 chip. It's customization like this that make linux rule!

Oftentimes, depedning on kernel and lm_sensor version (they have recommendations on the site on which version to use with which kernel), lm_sensors may work just right on install and with some tweaks to a configuration file. See their site for more detail.

lm_sensors is being developed. For example, the it87.c maintainer is working on providing custom capability for fan RPMs based on user defined temperature intervals. When this happens I can dump my hack in the it87.c module. The point is they have great support.

I am only suggesting that this software may potentially provide a means for you to control your fan RPMs (hence noise level) while in linux as it appears your hardware has the capability based on your experience in XP.

-Rich

I did a quick search and I think the Sony PCV-RX640 uses an Asus P4B266 which uses an ASB100 which lm_sensors has support for and apparently can detect.

-Rich

Sony VAIO PCV RX550 fan and Fedora 2

I am having the same problem with my Sony VAIO PCV RX550 and Fedora2. Everything works A-OK except that loud fan is driving me nuts. I have read the threads and am unsure I the answer is to make a change in the bios. And, if so how? Also, what would happen if I just installed a non Sony power supply? Would a single speed fan work there for both XP and Fedora?

I had the same problem with my Acer Aspire 1700 Laptop.

Suddenly the problem was solved when i used Grub instead of Lilo to Multiboot my laptop.
But maybe it was solved because of anoter action which i just dont remember.

I would say just try Grub. If it doesnt work it wont harm you.

Eh, the solution to this problem is to enable ACPI.

ACPI permits the state of thermal devices to be reported back to the kernel, etc.

Without ACPI being enabled many laptops will usually run their fans at their highest settings.

Edit /etc/lilo.conf and look for the line which contains

acpi=ht

and remove the above, but nothing else.

When done run lilo from the command prompt by merely typing "lilo".

You should not receive an error message. If you do DO NOT reboot until you can run lilo to completion.

Reboot with the new settings.

You then may also want to install the ACPI daemons (e.g. acpid, acpi) via the urpmi command, and also run the sensors-detect portion of lm_sensors...

i had a 5 year old machine and the only fan that would turn off would be the cpu fan when in standby ( fan was so quiete to begin with ) but if i was you i would get your good computer out of that awful case. and get a antec PSU and that should fix ur problem

Well THAT was really helpful...

Sony rx650 Fan Speed

Quote:

Originally Posted by Doutlick

Hmmm. Maybe I'm not saying this just right. If you look at the link provided in my last post, a person with the same sony computer system had the same problem with a dual boot system. When XP is loaded there is no problem. When linux is loaded the fan runs like the prop on an airplane.

I don't have a dual boot system set up but I would bet my first born child that if I did, the fan would shut off when XP loaded. I really don't think there is anything wrong with the fan. Like I mentioned before, this may just be some kink with the sony machine that I have.

I can assure you though. With XP, the fan DID shut off after bootup. The only time I noticed it coming back on was when I was burning a CD. Other than that, the fan remained off.

Now, with linux, the fan remains on all the time.

XP = Fan shuts off; Linux = Fan DOES NOT shut off. ~ I swear I'm not making this up. Anyone else with a Vaio desktop out there?

Not sure if this helps much as the original post is old already. I have a Sony rx650 that I reformated w/o the original "Sony" disks and installed XP Pro. The fan ran at high speed all the time. The same as Running on Linux. I found a patch for xp on Sony's web site that slowed it back to what it used to be (in XP) but never could for Linux so gave up on Linux. Now back trying Linux again and am determined to fix this problem. Will post again if I am sucessfull.

modprobe fan
modprobe thermal

Fan shutting off? LOL... uh huh

I have a solution that was posted here:
http://ubuntuforums.org/showthread.php?t=75972

install package: lm-sensors
run: sensors-detect (answered "yes" to all of their questions)
run: pwmconfig
to set the preferences
you can try to run fancontrol at this point as root to see if it is working.

Finally add
/usr/sbin/fancontrol &
to /etc/rc.local