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Groups > linux.debian.user > #239127 > unrolled thread

smart fans

Started byEmanuel Berg <moasenwood@zoho.eu>
First post2021-08-22 02:00 +0200
Last post2021-08-24 11:20 +0200
Articles 20 on this page of 121 — 12 participants

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Contents

  smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 02:00 +0200
    Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 02:50 +0200
      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 03:10 +0200
        Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 05:00 +0200
          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 05:10 +0200
        Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 05:10 +0200
          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 05:30 +0200
            Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Reco <recoverym4n@enotuniq.net> - 2021-08-22 07:30 +0200
              Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 08:30 +0200
                Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:30 +0200
                Re: FOSS "BIOS" (UEFI) The Wanderer <wanderer@fastmail.fm> - 2021-08-22 12:10 +0200
                  Re: FOSS "BIOS" (UEFI) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 13:30 +0200
                Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:20 +0200
                  Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:30 +0200
                    Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 18:50 +0200
            FOSS "BIOS" (UEFI) (was: Re: smart fans) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 07:30 +0200
    Re: smart fans <tomas@tuxteam.de> - 2021-08-22 09:10 +0200
      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 09:50 +0200
        Re: smart fans <tomas@tuxteam.de> - 2021-08-22 10:00 +0200
          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:10 +0200
            Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:10 +0200
              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:20 +0200
            Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:30 +0200
              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:50 +0200
                Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:10 +0200
                  Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:10 +0200
                    Re: smart fans The Wanderer <wanderer@fastmail.fm> - 2021-08-22 16:10 +0200
                      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:20 +0200
                    Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 18:50 +0200
        Re: smart fans Hans <hans.ullrich@loop.de> - 2021-08-22 17:30 +0200
          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 17:50 +0200
    Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 09:50 +0200
      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:00 +0200
        Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:20 +0200
        Re: smart fans <tomas@tuxteam.de> - 2021-08-22 10:30 +0200
          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:40 +0200
          Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:40 +0200
            Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:40 +0200
              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:50 +0200
                Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 11:30 +0200
                  Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 11:50 +0200
                    Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:10 +0200
                  Re: smart fans didier gaumet <didier.gaumet@gmail.com> - 2021-08-22 11:50 +0200
                  Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:10 +0200
                Re: smart fans didier gaumet <didier.gaumet@gmail.com> - 2021-08-22 11:30 +0200
            Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 11:00 +0200
              Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:10 +0200
                Re: smart fans <tomas@tuxteam.de> - 2021-08-22 15:50 +0200
                  Re: smart fans rhkramer@gmail.com - 2021-08-22 16:10 +0200
                    Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:50 +0200
                  Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:10 +0200
                    Re: smart fans <tomas@tuxteam.de> - 2021-08-22 16:30 +0200
                    Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 18:50 +0200
                      Re: smart fans Gene Heskett <gheskett@shentel.net> - 2021-08-22 23:10 +0200
                        Re: smart fans Gene Heskett <gheskett@shentel.net> - 2021-08-23 00:20 +0200
                  Re: smart fans "Thomas Schmitt" <scdbackup@gmx.net> - 2021-08-22 16:30 +0200
                  Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 18:50 +0200
                    Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 19:00 +0200
                  Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 23:10 +0200
                    Re: smart fans <tomas@tuxteam.de> - 2021-08-23 10:10 +0200
                      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 21:10 +0200
                        Re: smart fans <tomas@tuxteam.de> - 2021-08-23 21:10 +0200
                      Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-23 21:30 +0200
                        Re: smart fans <tomas@tuxteam.de> - 2021-08-23 21:40 +0200
                          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 22:30 +0200
                          Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 00:30 +0200
              Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 22:30 +0200
                Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 23:20 +0200
        Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 21:30 +0200
          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 22:00 +0200
            Re: smart fans didier gaumet <didier.gaumet@gmail.com> - 2021-08-22 23:20 +0200
              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 23:40 +0200
                Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 23:50 +0200
                  Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-23 00:40 +0200
                Re: smart fans didier gaumet <didier.gaumet@gmail.com> - 2021-08-23 09:30 +0200
          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 22:20 +0200
            Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 23:10 +0200
              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 23:30 +0200
          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 23:50 +0200
            Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-23 00:10 +0200
              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 02:00 +0200
                Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 02:10 +0200
                  Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 02:40 +0200
                    Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 03:00 +0200
                      Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-23 03:30 +0200
                        Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 21:00 +0200
                          Re: smart fans "Andrew M.A. Cater" <amacater@einval.com> - 2021-08-24 18:20 +0200
                            Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 23:00 +0200
                      Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-23 03:30 +0200
                        Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 21:00 +0200
                Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-23 03:20 +0200
                  Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 21:00 +0200
                    Re: smart fans "Thomas Schmitt" <scdbackup@gmx.net> - 2021-08-23 22:50 +0200
                      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 23:00 +0200
                        Re: smart fans "Thomas Schmitt" <scdbackup@gmx.net> - 2021-08-23 23:30 +0200
                          Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 00:50 +0200
                            Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 01:30 +0200
                            Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 02:30 +0200
                              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 03:00 +0200
                              Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 04:30 +0200
                                Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 05:20 +0200
                                  Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 09:00 +0200
                                    Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 23:20 +0200
                                      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 23:40 +0200
                      Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 00:40 +0200
                    Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 00:20 +0200
                      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 02:10 +0200
                        Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 04:00 +0200
                          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 07:30 +0200
                            Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 09:50 +0200
                              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-25 00:20 +0200
                                Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-25 01:30 +0200
                                  Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-29 01:00 +0200
                                    Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-29 12:00 +0200
                                      Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-09-04 00:10 +0200
                                        Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-09-04 03:50 +0200
                                          Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-09-04 04:50 +0200
                                            Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-09-04 23:00 +0200
                                              Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-09-07 03:10 +0200
                                                Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-09-07 23:20 +0200
                      Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 11:20 +0200

Page 4 of 7 — ← Prev page 1 2 3 [4] 5 6 7  Next page →


#239257

FromEmanuel Berg <moasenwood@zoho.eu>
Date2021-08-23 21:10 +0200
Message-ID<CPnuy-2oR-11@gated-at.bofh.it>
In reply to#239238
tomas wrote:

> I say "back then" above, but there seem to be design
> parameters which still favour brushes. My reasonably recent
> power drill still has brushes.

The 18V cordless power tools from Ryobi that I like come in
several versions each and the most expensive ones are
brushless, often.

-- 
underground experts united
https://dataswamp.org/~incal

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#239258

From<tomas@tuxteam.de>
Date2021-08-23 21:10 +0200
Message-ID<CPnuz-2oR-23@gated-at.bofh.it>
In reply to#239257

[Multipart message — attachments visible in raw view] — view raw

On Mon, Aug 23, 2021 at 08:57:09PM +0200, Emanuel Berg wrote:
> tomas wrote:
> 
> > [...] My reasonably recent power drill still has brushes.
> 
> The 18V cordless power tools from Ryobi that I like come in
> several versions each and the most expensive ones are
> brushless, often.

My power tools all have cords :)

Cheers
 - t

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#239259

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2021-08-23 21:30 +0200
Message-ID<CPnNU-2v1-13@gated-at.bofh.it>
In reply to#239238
On 8/23/21 1:03 AM, tomas@tuxteam.de wrote:
> On Sun, Aug 22, 2021 at 02:02:45PM -0700, David Christensen wrote:
> 
> [...]
> 
>> What is "BLDC"?
> 
> Brushless (electric) DC motor [1]. Back Then (TM ;-), to turn an
> electric motor around you had to switch around the magnetic field
> in the coils at (about) the right time. This was accomplished by
> sliding contacts (aka "brushes") on a sectioned cylinder.
> 
> These days you use silicon magic (aka electronics to accomplish
> the same thing.
> 
> I say "back then" above, but there seem to be design parameters
> which still favour brushes. My reasonably recent power drill
> still has brushes.
> 
> Cheers
> 
> [1] https://en.wikipedia.org/wiki/BLDC
> 
>   - t


Thank you.  Do you know where there is information that explains how a 
BLDC computer fan motor responds to variable supply voltage?


David

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#239260

From<tomas@tuxteam.de>
Date2021-08-23 21:40 +0200
Message-ID<CPnXA-2yk-9@gated-at.bofh.it>
In reply to#239259

[Multipart message — attachments visible in raw view] — view raw

On Mon, Aug 23, 2021 at 12:20:34PM -0700, David Christensen wrote:

[...]

> Thank you.  Do you know where there is information that explains how
> a BLDC computer fan motor responds to variable supply voltage?

Not specifically for computer fans, and the controller electronics
(which is a must for a BLDC) has to be somewhat prepared to do this,
but here [1] is a blog post which gives a rough idea of the things
involved.

BLDCs are a huge thing in drones and things.

Cheers

[1] https://things-in-motion.blogspot.com/2019/05/understanding-bldc-pmsm-electric-motors.html

 - t

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#239261

FromEmanuel Berg <moasenwood@zoho.eu>
Date2021-08-23 22:30 +0200
Message-ID<CPoJX-34d-5@gated-at.bofh.it>
In reply to#239260
With the 'powersave' governor and all 5 fans "Silent", the CPU
temperature, for random/normal computer use, is in
(33.25 51.125) and ditto GPU (40 42), and with the
'performance' governor it is ... exactly the same.

https://dataswamp.org/~incal/conf/.zsh/misc-hw

-- 
underground experts united
https://dataswamp.org/~incal

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#239267

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2021-08-24 00:30 +0200
Message-ID<CPqC5-4cI-5@gated-at.bofh.it>
In reply to#239260
On 8/23/21 12:36 PM, tomas@tuxteam.de wrote:
> On Mon, Aug 23, 2021 at 12:20:34PM -0700, David Christensen wrote:
> 
> [...]
> 
>> Thank you.  Do you know where there is information that explains how
>> a BLDC computer fan motor responds to variable supply voltage?
> 
> Not specifically for computer fans, and the controller electronics
> (which is a must for a BLDC) has to be somewhat prepared to do this,
> but here [1] is a blog post which gives a rough idea of the things
> involved.
> 
> BLDCs are a huge thing in drones and things.
> 
> Cheers
> 
> [1] https://things-in-motion.blogspot.com/2019/05/understanding-bldc-pmsm-electric-motors.html
> 
>   - t


Thank you.  :-)


David

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#239213

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2021-08-22 22:30 +0200
Message-ID<CP2gp-61a-1@gated-at.bofh.it>
In reply to#239157
On 8/22/21 1:39 AM, Emanuel Berg wrote:
> 4-pin fans wouldn't be possible because of the motherboard
> sockets, I think, which are also 3-pin.


The motherboard user's manual says all of the fan connectors are 4-pin.


On 8/22/21 6:03 AM, Polyna-Maude Racicot-Summerside wrote:
 > Like I already wrote, modifying voltage doesn't change speed of a motor
 > (fan).


STFW here are some useful wiring diagrams for x86 ATX PC computer power 
supplies and fans:

https://www.smpspowersupply.com/connectors-pinouts.html

https://landing.coolermaster.com/faq/3-pin-and-4-pin-fan-wire-diagrams/


Changing the supply voltage of a old-school 2-wire fan will change the 
speed.  These typically have 4-pin power supply Molex connectors and/or 
2-pin 0.1" general electronics connectors.   I connect these to Molex 
connectors or manual speed controllers, paying attention to alignment/ 
polarity.


Changing the supply voltage of a 3-pin fan, where the 3rd wire is 
tachometer feedback, will change the speed.  I connect these to 
motherboard 3-pin and 4-pin fan connectors, paying attention to the 
alignment tab.


Changing the supply voltage of a 4-pin fan, where the 3rd wire is 
tachometer feedback and the 4th wire is PWM speed control, may change 
the fan speed, may cause the electronics onboard the fan assembly to 
malfunction or fail, and/or may cause the electronics feeding the fan to 
malfunction or fail.  I connect these to motherboard 4-pin fan 
connectors, paying attention to the alignment tab.


Be careful when making connections.  I once mis-aligned a 2.5" IDE HDD 
40-pin power/signal adapter cable to a 2.5" IDE HDD and was off by one 
row.  When I energized the power supply, the result was a short-circuit, 
smoked insulation, and permanently damaged hardware!


David

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#239218

FromEmanuel Berg <moasenwood@zoho.eu>
Date2021-08-22 23:20 +0200
Message-ID<CP32O-6wZ-15@gated-at.bofh.it>
In reply to#239213
David Christensen wrote:

> The motherboard user's manual says all of the fan connectors
> are 4-pin.

Indeed, I looked at one of the fan's wires instead of the
connector :$

> Changing the supply voltage of a old-school 2-wire fan will
> change the speed. These typically have 4-pin power supply
> Molex connectors and/or 2-pin 0.1" general electronics
> connectors. I connect these to Molex connectors or manual
> speed controllers, paying attention to alignment/polarity.
>
> Changing the supply voltage of a 3-pin fan, where the 3rd
> wire is tachometer feedback, will change the speed.
> I connect these to motherboard 3-pin and 4-pin fan
> connectors, paying attention to the alignment tab.
>
> Changing the supply voltage of a 4-pin fan, where the 3rd
> wire is tachometer feedback and the 4th wire is PWM speed
> control, may change the fan speed, may cause the electronics
> onboard the fan assembly to malfunction or fail, and/or may
> cause the electronics feeding the fan to malfunction or
> fail. I connect these to motherboard 4-pin fan connectors,
> paying attention to the alignment tab.
>
> Be careful when making connections. I once mis-aligned
> a 2.5" IDE HDD 40-pin power/signal adapter cable to a 2.5"
> IDE HDD and was off by one row. When I energized the power
> supply, the result was a short-circuit, smoked insulation,
> and permanently damaged hardware!

:)

-- 
underground experts united
https://dataswamp.org/~incal

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#239210

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2021-08-22 21:30 +0200
Message-ID<CP1km-5sn-3@gated-at.bofh.it>
In reply to#239143
On 8/22/21 12:56 AM, Emanuel Berg wrote:
> David Christensen wrote:
> 
>> If you throttle your CPU, it will not generate as much heat:
>>
>>      https://wiki.debian.org/CpuFrequencyScaling
> 
> You mean permanently or when I'm not using the computer?


Install the Debian package 'cpufrequtils'.


Use cpufreq-info(1) to get information about CPU frequency settings, 
including the governor.  Use cpufreq-set(1) to make changes.


For example, here is my daily driver laptop.  Debian offers two governor 
settings, "powersave" and "performance".  It booted up with the 
"powersave" governor.  If I were playing games, crunching numbers, etc., 
I could change the governor to "performance":

2021-08-22 11:40:22 root@dipsy ~
# cpufreq-info -g
performance powersave

2021-08-22 11:42:37 root@dipsy ~
# cpufreq-info -p
800000 3300000 powersave

2021-08-22 11:42:44 root@dipsy ~
# cpufreq-info -f
825551

2021-08-22 11:44:50 root@dipsy ~
# cpufreq-set -g performance

2021-08-22 11:46:14 root@dipsy ~
# cpufreq-info -p
800000 3300000 performance

2021-08-22 11:46:23 root@dipsy ~
# cpufreq-info -f
2539034


When I'm done, I can change the governor to "powersave":

2021-08-22 11:46:59 root@dipsy ~
# cpufreq-set -g powersave


Some of my other machines offer additional governors -- "powersave" and 
"userspace".  Run "cpufreq-info -g" to see what Debian offers on your 
motherboard.


>> Some motherboards have temperature sensors
> 
> The GPU seems to be always 41C while the CPU shows a cycle of
> some 34-47C.
> 
>> fan connectors (e.g. 4-pin)
> 
> Fan connectors are 3-pin!

> The motherboard is Asus ROG Strix B450-F Gaming.


The user's manual:

https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/ROG_STRIX_B450_F_GAMING/E14401_ROG_STRIX_B450-F_GAMING_UM_WEB.pdf


The table "specifications summary", "Internal I/O Ports" on page xii says:

1 x 4-Pin CPU fan connector
1 x 4-Pin CPU_OPT fan connector
1 x 4-Pin AIO_PUMP connector
3 x 4-Pin Chassis fan connectors


See section 3.2.3 "QFan Control" for how to use the Setup utility to 
control fan speeds.


> Fans are:
> 
> fan    front low           be quiet! Shadow Wings 2  140 mm
>         front high          be quiet! Shadow Wings 2  140 mm
>         CPU cooling tower   be quiet! Pure Wings 2    120 mm  (2)
>         rear                Corsair                   120 mm
>         projector extra     fractal Silent Series R3  140 mm


What is "projector extra"?


The "be quiet!" fans appear to be made in 3-pin and 4-pin versions.  We 
need a model number to check the Corsair fan.  The "fractal Silent 
Series R3" appears to have 3 pins:

https://www.bequiet.com/en/casefans/1625

https://www.bequiet.com/en/casefans/pure-wings-2/783

https://www.fractal-design.com/wp-content/uploads/2019/06/Silent-Series-R3-Fans-Product-Sheet-0.23-MB.pdf


You will want to identify which fan is connected to which motherboard 
connector.  See user's manual section 1.1.2 "Motherboard layout". 
Document connections using the motherboard connector names.


The Setup QFan Control should be able to control the speed of either 
3-pin or 4-pin fans.  I would try "DC Mode" for 3-pin fans and "PWM 
Mode" for 4-pin fans.


>> firmware settings
> 
> Where are these? The BIOS/UEFI?


See section 3.2 "BIOS setup program" of the user's manual.


David

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#239211

FromEmanuel Berg <moasenwood@zoho.eu>
Date2021-08-22 22:00 +0200
Message-ID<CP1Nn-5Cv-3@gated-at.bofh.it>
In reply to#239210
It took an even closer look at the motherboard and discovered
_all_ connectors are 4-pin. Inside the computer, 3/5 fans are
4-pin and the two on the CPU cooling tower (which are 4-pin,
so it checks out) even have "PWM" in their sticker text.

If the BIOS/UEFI setting is already PWM, and the connectors
are 4-pin, and some of the fans are, what's missing?

And this makes it is even more difficult to understand why
pwmconfig(8) asks for 3-pin fans. Because I have them -
as well!

fan    front low           be quiet! Shadow Wings 2  140 mm, 3-pin        [1]
       front high          be quiet! Shadow Wings 2  140 mm, 4-pin
       CPU cooling tower   be quiet! Pure Wings 2    120 mm, 4-pin (2)    [2]
       rear                Corsair                   120 mm, 3-pin
       projector extra     fractal Silent Series R3  140 mm, 3-pin        [3]
       (motherboard fan connectors are:
        CPU_FAN, CPU_OPT, SHA_FAN1, SHA_FAN2, SHA_FAN3 - all 4-pin)

   [1] https://www.bequiet.com/en/casefans/shadow-wings-2/1620
       "available with or without PWM control"
   [2] https://www.bequiet.com/en/casefans/449
       "Fan speed @ 100% PWM / 12V: 1500 RPM"
   [3] https://www.fractal-design.com/products/fans/silent/silent-series-r3-140mm/black/
       (Doesn't mention PWM.)

https://dataswamp.org/~incal/ebchw/COMPUTER

-- 
underground experts united
https://dataswamp.org/~incal

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#239217

Fromdidier gaumet <didier.gaumet@gmail.com>
Date2021-08-22 23:20 +0200
Message-ID<CP32O-6wZ-9@gated-at.bofh.it>
In reply to#239211

Le dimanche 22 août 2021 à 21:59 +0200, Emanuel Berg a écrit :
> It took an even closer look at the motherboard and discovered
> _all_ connectors are 4-pin. Inside the computer, 3/5 fans are
> 4-pin and the two on the CPU cooling tower (which are 4-pin,
> so it checks out) even have "PWM" in their sticker text.
> 
> If the BIOS/UEFI setting is already PWM, and the connectors
> are 4-pin, and some of the fans are, what's missing?
> 
> And this makes it is even more difficult to understand why
> pwmconfig(8) asks for 3-pin fans. Because I have them -
> as well!
> 
> fan    front low           be quiet! Shadow Wings 2  140 mm, 3-
> pin        [1]
>        front high          be quiet! Shadow Wings 2  140 mm, 4-pin
>        CPU cooling tower   be quiet! Pure Wings 2    120 mm, 4-pin
> (2)    [2]
>        rear                Corsair                   120 mm, 3-pin
>        projector extra     fractal Silent Series R3  140 mm, 3-
> pin        [3]
>        (motherboard fan connectors are:
>         CPU_FAN, CPU_OPT, SHA_FAN1, SHA_FAN2, SHA_FAN3 - all 4-pin)
[...]

I would think that pwmconfig complains that it finds 3-pins fans set up
to PWM mode (4-pins required)

Your UEFI propose either to setup your fans globally or individually
and I think that by default the setup is global. This would probably be
fine il all your fans were either 3-pins (DC mode) or 4-pins
(preferably PWM mode but DC mode is possibility). But you have both
installed. A solution could be, in your UEFI, to individually set up
all your 4-pins fans to PWM mode, while setting up all your 3-pins fans
to DC mode.

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#239220

FromEmanuel Berg <moasenwood@zoho.eu>
Date2021-08-22 23:40 +0200
Message-ID<CP3ma-6Dd-11@gated-at.bofh.it>
In reply to#239217
didier gaumet wrote:

> I would think that pwmconfig complains that it finds 3-pins
> fans set up to PWM mode (4-pins required)
>
> Your UEFI propose either to setup your fans globally or
> individually and I think that by default the setup is
> global. This would probably be fine il all your fans were
> either 3-pins (DC mode) or 4-pins (preferably PWM mode but
> DC mode is possibility). But you have both installed.
> A solution could be, in your UEFI, to individually set up
> all your 4-pins fans to PWM mode, while setting up all your
> 3-pins fans to DC mode.

Yeah, or replace the 3-pins with 4-pins?

re: pwmconfig, here is what it says:

$ sudo pwmconfig
# pwmconfig version 3.6.0
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 k10temp
   hwmon1 is asus
   hwmon2 is nouveau

Found the following PWM controls:
   hwmon2/pwm1           current value: 52
hwmon2/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) y

Giving the fans some time to reach full speed...
Found the following fan sensors:
   hwmon1/fan1_input     current speed: 0 ... skipping!

There are no working fan sensors, all readings are 0.
Make sure you have a 3-wire fan connected.
You may also need to increase the fan divisors.
See doc/fan-divisors for more information.

-- 
underground experts united
https://dataswamp.org/~incal

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#239222

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2021-08-22 23:50 +0200
Message-ID<CP3vP-6Gx-3@gated-at.bofh.it>
In reply to#239220
On 8/22/21 2:26 PM, Emanuel Berg wrote:
> didier gaumet wrote:
> 
>> I would think that pwmconfig complains that it finds 3-pins
>> fans set up to PWM mode (4-pins required)
>>
>> Your UEFI propose either to setup your fans globally or
>> individually and I think that by default the setup is
>> global. This would probably be fine il all your fans were
>> either 3-pins (DC mode) or 4-pins (preferably PWM mode but
>> DC mode is possibility). But you have both installed.
>> A solution could be, in your UEFI, to individually set up
>> all your 4-pins fans to PWM mode, while setting up all your
>> 3-pins fans to DC mode.
> 
> Yeah, or replace the 3-pins with 4-pins?


I believe your motherboard can support both 3-pin and 4-pin fans using 
hardware/ firmware/ Setup.


> re: pwmconfig, here is what it says:
> 
> $ sudo pwmconfig
> # pwmconfig version 3.6.0
> 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 k10temp
>     hwmon1 is asus
>     hwmon2 is nouveau
> 
> Found the following PWM controls:
>     hwmon2/pwm1           current value: 52
> hwmon2/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) y
> 
> Giving the fans some time to reach full speed...
> Found the following fan sensors:
>     hwmon1/fan1_input     current speed: 0 ... skipping!
> 
> There are no working fan sensors, all readings are 0.
> Make sure you have a 3-wire fan connected.
> You may also need to increase the fan divisors.
> See doc/fan-divisors for more information.


I consider motherboard hardware/ firmware control of fans to be more 
reliable than operating system control of fans.  Using a Linux tool to 
control the fans involves several layers of complexity and, given 
closed-source motherboard hardware and firmware, the only route is 
reverse engineering; which is error-prone at best.  And, you paid for a 
motherboard that has advanced fan control features.  I would advise 
using the motherboard hardware/ firmware/ Setup utility to control your 
fans.


Can you control the speed of any of the fans using Setup?


David

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#239226

FromPolyna-Maude Racicot-Summerside <debian@polynamaude.com>
Date2021-08-23 00:40 +0200
Message-ID<CP4ie-7hi-11@gated-at.bofh.it>
In reply to#239222

[Multipart message — attachments visible in raw view] — view raw

On 2021-08-22 5:47 p.m., David Christensen wrote:
> On 8/22/21 2:26 PM, Emanuel Berg wrote:
>> didier gaumet wrote:
>>
>>> I would think that pwmconfig complains that it finds 3-pins
>>> fans set up to PWM mode (4-pins required)
>>>
>>> Your UEFI propose either to setup your fans globally or
>>> individually and I think that by default the setup is
>>> global. This would probably be fine il all your fans were
>>> either 3-pins (DC mode) or 4-pins (preferably PWM mode but
>>> DC mode is possibility). But you have both installed.
>>> A solution could be, in your UEFI, to individually set up
>>> all your 4-pins fans to PWM mode, while setting up all your
>>> 3-pins fans to DC mode.
>>
>> Yeah, or replace the 3-pins with 4-pins?
> 
> 
> I believe your motherboard can support both 3-pin and 4-pin fans using
> hardware/ firmware/ Setup.
> 
> 
>> re: pwmconfig, here is what it says:
>>
>> $ sudo pwmconfig
>> # pwmconfig version 3.6.0
>> 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 k10temp
>>     hwmon1 is asus
>>     hwmon2 is nouveau
>>
>> Found the following PWM controls:
>>     hwmon2/pwm1           current value: 52
>> hwmon2/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) y
>>
>> Giving the fans some time to reach full speed...
>> Found the following fan sensors:
>>     hwmon1/fan1_input     current speed: 0 ... skipping!
>>
>> There are no working fan sensors, all readings are 0.
>> Make sure you have a 3-wire fan connected.
>> You may also need to increase the fan divisors.
>> See doc/fan-divisors for more information.
> 
> 
> I consider motherboard hardware/ firmware control of fans to be more
> reliable than operating system control of fans.  Using a Linux tool to
> control the fans involves several layers of complexity and, given
> closed-source motherboard hardware and firmware, the only route is
> reverse engineering; which is error-prone at best.  And, you paid for a
> motherboard that has advanced fan control features.  I would advise
> using the motherboard hardware/ firmware/ Setup utility to control your
> fans.
> 
Somewhat what I advocated since the beginning.

Seems to be much work with risks involved when there's already a working
infrastructure that does the job.

Overkill
> 
> Can you control the speed of any of the fans using Setup?
> 
> 
> David
> 

-- 
Polyna-Maude R.-Summerside
-Be smart, Be wise, Support opensource development

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#239236

Fromdidier gaumet <didier.gaumet@gmail.com>
Date2021-08-23 09:30 +0200
Message-ID<CPcz8-42Y-3@gated-at.bofh.it>
In reply to#239220

Le dimanche 22 août 2021 à 23:26 +0200, Emanuel Berg a écrit :
> 
> Yeah, or replace the 3-pins with 4-pins?
[...]

If you already have 4-pins fans available or are willing to invest in
buying them, it would probably be the best solution

Good luck :-)  

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#239212

FromEmanuel Berg <moasenwood@zoho.eu>
Date2021-08-22 22:20 +0200
Message-ID<CP26K-5Yg-7@gated-at.bofh.it>
In reply to#239210
David Christensen wrote:

> Some of my other machines offer additional governors --
> "powersave" and "userspace". Run "cpufreq-info -g" to see
> what Debian offers on your motherboard.

$ cpufreq-info -g
conservative userspace powersave ondemand performance schedutil

> The user's manual:
>
> https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/ROG_STRIX_B450_F_GAMING/E14401_ROG_STRIX_B450-F_GAMING_UM_WEB.pdf

Ah, excellent, couldn't find that on the page that was linked
previously in this thread...

>> Fans are:
>> fan    front low           be quiet! Shadow Wings 2  140 mm
>>        front high          be quiet! Shadow Wings 2  140 mm
>>        CPU cooling tower   be quiet! Pure Wings 2    120 mm  (2)
>>        rear                Corsair                   120 mm
>>        projector extra     fractal Silent Series R3  140 mm
>
> What is "projector extra"?

fan    front low          be quiet! Shadow Wings 2  140 mm 3-pin        [1]
       front high         be quiet! Shadow Wings 2  140 mm 4-pin
       CPU cooling tower  be quiet! Pure Wings 2    120 mm 4-pin (2)    [2]
       rear               Corsair                   120 mm 3-pin
       projector extra    fractal Silent Series R3  140 mm 3-pin        [3]

       The motherboard fan connectors are:
         CPU_FAN  - CPU cooling tower;
         CPU_OPT  - CPU colling tower;
         CHA_FAN1 - fan wire splitter - 3 wires - rear,
                                      - 2 wires - projector extra;
         CHA_FAN2 - front high;
         CHA_FAN3 - front low.
       All connectors are 4-pin. "Projector extra" is a fan
       located outside the computer.

   [1] https://www.bequiet.com/en/casefans/shadow-wings-2/1620
       "available with or without PWM control"
   [2] https://www.bequiet.com/en/casefans/449
       "Fan speed @ 100% PWM / 12V: 1500 RPM"
   [3] https://www.fractal-design.com/products/fans/silent/silent-series-r3-140mm/black/
       (Doesn't mention PWM.)

https://dataswamp.org/~incal/ebchw/COMPUTER

--
underground experts united
https://dataswamp.org/~incal

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#239214

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2021-08-22 23:10 +0200
Message-ID<CP2T7-6tC-1@gated-at.bofh.it>
In reply to#239212
On 8/22/21 1:15 PM, Emanuel Berg wrote:

> fan    front low          be quiet! Shadow Wings 2  140 mm 3-pin        [1]
>         front high         be quiet! Shadow Wings 2  140 mm 4-pin
>         CPU cooling tower  be quiet! Pure Wings 2    120 mm 4-pin (2)    [2]
>         rear               Corsair                   120 mm 3-pin
>         projector extra    fractal Silent Series R3  140 mm 3-pin        [3]
> 
>         The motherboard fan connectors are:
>           CPU_FAN  - CPU cooling tower;
>           CPU_OPT  - CPU colling tower;
>           CHA_FAN1 - fan wire splitter - 3 wires - rear,
>                                        - 2 wires - projector extra;
>           CHA_FAN2 - front high;
>           CHA_FAN3 - front low.
>         All connectors are 4-pin. "Projector extra" is a fan
>         located outside the computer.


I would disconnect the fan wire splitter, disconnect projector extra 
fan, and connect the Corsair fan directly to CHA_FAN1:

CPU_FAN- CPU cooling tower - be quiet! Pure Wings 2, 120 mm, 4-pin

CPU_OPT - CPU cooling tower - be quiet! Pure Wings 2, 120 mm, 4-pin

CHA_FAN1 - location? - Corsair, 120 mm 3-pin

CHA_FAN2 - front high - be quiet! Shadow Wings 2, 140 mm, 4-pin

CHA_FAN3 - front low - be quiet! Shadow Wings 2, 140 mm, 3-pin


It is unwise to power external devices from a computer motherboard.  I 
would get a 12 VDC power adapter with suitable ampere rating for the 
projector extra fan.


David

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#239219

FromEmanuel Berg <moasenwood@zoho.eu>
Date2021-08-22 23:30 +0200
Message-ID<CP3ct-6Ad-5@gated-at.bofh.it>
In reply to#239214
David Christensen wrote:

> I would disconnect the fan wire splitter, disconnect
> projector extra fan, and connect the Corsair fan directly to
> CHA_FAN1 [...]
>
> CHA_FAN1 - location? - Corsair, 120 mm 3-pin

This fan is at the rear end of the computer, high, air goes
out. This is 3-pin so should be replaced ...

> It is unwise to power external devices from a computer
> motherboard.

... but in the meantime I can connect it directly to
CHA_FAN1, sure.

-- 
underground experts united
https://dataswamp.org/~incal

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#239221

FromEmanuel Berg <moasenwood@zoho.eu>
Date2021-08-22 23:50 +0200
Message-ID<CP3vP-6Gx-5@gated-at.bofh.it>
In reply to#239210
David Christensen wrote:

> Some of my other machines offer additional governors --
> "powersave" and "userspace". Run "cpufreq-info -g" to see
> what Debian offers on your motherboard.

I did install and did set it to different governors but the
fans seem to go on like the always do regardless?

CPU and GPU temperatures seemed to be the same as well...

-- 
underground experts united
https://dataswamp.org/~incal

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#239224

FromDavid Christensen <dpchrist@holgerdanske.com>
Date2021-08-23 00:10 +0200
Message-ID<CP3Pb-74q-1@gated-at.bofh.it>
In reply to#239221
On 8/22/21 2:40 PM, Emanuel Berg wrote:
> David Christensen wrote:
> 
>> Some of my other machines offer additional governors --
>> "powersave" and "userspace". Run "cpufreq-info -g" to see
>> what Debian offers on your motherboard.
> 
> I did install and did set it to different governors but the
> fans seem to go on like the always do regardless?
> 
> CPU and GPU temperatures seemed to be the same as well...


I would figure out what Setup can do with the fans before messing with 
the Linux CPU governor.  Install software to display temperatures, to 
display fan speeds, and to put the CPU under load.  Get a camera, a 
notepad, a stopwatch, and collect data as you work through configuring 
the fans in Setup.


David

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