| View previous topic :: View next topic |
| Author |
Message |
<3
Veteran
Joined: 21 Oct 2004
Posts: 1081
|
 Posted: Sat Oct 11, 2014 5:07 am Post subject: Where are the pwm modules |
 |
|
Can someone please tell me what modules in the kernel I need in order to get fan control to work? The wiki doesn't seem to have this information.
| Code: | #pwmconfig
# pwmconfig revision 5857 (2010-08-22)
This program will search your sensors for pulse width modulation (pwm)
controls, and test each one to see if it controls a fan on
your motherboard. Note that many motherboards do not have pwm
circuitry installed, even if your sensor chip supports pwm.
We will attempt to briefly stop each fan using the pwm controls.
The program will attempt to restore each fan to full speed
after testing. However, it is ** very important ** that you
physically verify that the fans have been to full speed
after the program has completed.
/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed |
|
|
| Back to top |
|
 |
NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54236
Location: 56N 3W
|
| Posted: Sat Oct 11, 2014 8:15 am Post subject: |
|
|
<3,
Use the serach in make menuconfig to find PWM
If that does't show anything interesting, press 'z' to show all the hidden symbols and run the seach again.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
|
| Back to top |
|
|
dlaor
n00b
Joined: 27 Jan 2008
Posts: 55
|
| Posted: Sat Oct 11, 2014 11:47 am Post subject: |
|
|
As far as I understand it pwmconfig looks for drivers that allow it to read temperatures and to (accordingly) change the speeds of fans. E.g. for me the command returns
| Code: | # pwmconfig revision 6166 (2013-05-01)
This program will search your sensors for pulse width modulation (pwm)
controls, and test each one to see if it controls a fan on
your motherboard. Note that many motherboards do not have pwm
circuitry installed, even if your sensor chip supports pwm.
We will attempt to briefly stop each fan using the pwm controls.
The program will attempt to restore each fan to full speed
after testing. However, it is ** very important ** that you
physically verify that the fans have been to full speed
after the program has completed.
Found the following devices:
hwmon0 is acpitz
hwmon1 is coretemp
hwmon2/device is it8728
Found the following PWM controls:
hwmon2/device/pwm1 current value: 70
hwmon2/device/pwm1 is currently setup for automatic speed control.
In general, automatic mode is preferred over manual mode, as
it is more efficient and it reacts faster. Are you sure that
you want to setup this output for manual control? (n) |
So it has found three drivers, the second is the one for the processor and the third is the one for the motherboard sensors/controls. Both I have enabled under the "Device drivers" -> "Hardware monitor support" section of the kernel menuconfig.
I do not remember how you can find out which drivers to enable. (Also, of course, your motherboard might not be supported) I think the same procedure as with lm_sensors applies: enable them all, run sensors-detect to see which ones are getting used and then disable the rest.
Hope this helps! |
|
| Back to top |
|
|
<3
Veteran
Joined: 21 Oct 2004
Posts: 1081
|
| Posted: Sat Oct 11, 2014 5:01 pm Post subject: |
|
|
| NeddySeagoon wrote: | <3,
Use the serach in make menuconfig to find PWM
If that does't show anything interesting, press 'z' to show all the hidden symbols and run the seach again. |
I already have everything that could be found with the text string "pwm" compiled as a module. except for the few options that are greyed out. |
|
| Back to top |
|
|
Anon-E-moose
Watchman
Joined: 23 May 2008
Posts: 6098
Location: Dallas area
|
| Posted: Sat Oct 11, 2014 6:55 pm Post subject: |
|
|
hw monitor under device drivers (as previously mentioned lm-sensors uses that also)
and possibly the acpi stuff
in my case it87 (super sensor hw chip) provides that.
_________________
PRIME x570-pro, 3700x, 6.1 zen kernel
gcc 13, profile 17.0 (custom bare multilib), openrc, wayland |
|
| Back to top |
|
|
<3
Veteran
Joined: 21 Oct 2004
Posts: 1081
|
|
| Back to top |
|
|
Anon-E-moose
Watchman
Joined: 23 May 2008
Posts: 6098
Location: Dallas area
|
| Posted: Sun Oct 12, 2014 10:59 am Post subject: |
|
|
I do not see any of the native drivers CONFIG_SENSORS_* set.
Which one you have depends on your motherboard.
I would suggest googling your "mb model" and "lm sensors" to see what others have set.
Set it in the kernel and run sensors-detect from the lm-sensors package to see if it is the correct one.
_________________
PRIME x570-pro, 3700x, 6.1 zen kernel
gcc 13, profile 17.0 (custom bare multilib), openrc, wayland |
|
| Back to top |
|
|
<3
Veteran
Joined: 21 Oct 2004
Posts: 1081
|
| Posted: Mon Oct 13, 2014 5:32 am Post subject: |
|
|
| Please ignore my previous post with the kernel config. I just went through that config and something is terribly wrong with it. A lot of options that I know for sure that should be enabled are for some reason disabled in it. For instance my root file system type was not enabled, wireless card drivers were not enabled. I suspect that my config file got corrupted and the kernel created a blank default config or something. |
|
| Back to top |
|
|
|
Kernel & Hardware
