Compaq V2000 Fan Control

Compaq V2000 Fan Control

[Bonilla, Alejandro]

Hi,

I'm trying to make my Compaq laptop give me control over the fan using
ACPI, but this ain't working. I have to be honest. I don't know much
about debugging acpi or about tools that will tell me much more.

Here is what I try:

echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points

If I set the critical to a value lower than what it is now, it will halt
the PC, which is good. (100)

If I set the passive to 50, nothing occurs. The Fan is not kicked if the
temp is higher, like 60c.

I was told the last value is the one that triggers the Fan. Still, it
just won't work for me.

This is the value that comes up on boot:
cat /proc/acpi/thermal_zone/THR1/trip_points 
critical (S5):           95 C
passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940

If I set the critical value to something really low, the Fan will kick
in at it's full power and will try to cool down the PC, but that is
while it's already halting.

Anyone has a clue for me?

Thanks,
.Alejandro

RE: Compaq V2000 Fan Control

[Karasyov, Konstantin A]

Hi,

>cat /proc/acpi/thermal_zone/THR1/trip_points
>critical (S5):           95 C
>passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940

This means, that you don't have fan control (i.e. active cooling)
through ACPI functionality - only passive cooling (i.e. decreasing
frequency, using throttling) is possible for this thermal zone. So, in
this string

>echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points

the only meaningful values are the first and the third (but at least 5
trip points are required -
<critical>:<hot>:<passive>:<active0>:<active1>)


Regards.
Konstantin.

>-----Original Message-----
>From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-
>owner@vger.kernel.org] On Behalf Of Bonilla, Alejandro
>Sent: Friday, March 24, 2006 11:28 PM
>To: linux-acpi@vger.kernel.org
>Subject: Compaq V2000 Fan Control
>
>Hi,
>
>I'm trying to make my Compaq laptop give me control over the fan using
>ACPI, but this ain't working. I have to be honest. I don't know much
>about debugging acpi or about tools that will tell me much more.
>
>Here is what I try:
>
>echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points
>
>If I set the critical to a value lower than what it is now, it will
halt
>the PC, which is good. (100)
>
>If I set the passive to 50, nothing occurs. The Fan is not kicked if
the
>temp is higher, like 60c.
>
>I was told the last value is the one that triggers the Fan. Still, it
>just won't work for me.
>
>This is the value that comes up on boot:
>cat /proc/acpi/thermal_zone/THR1/trip_points
>critical (S5):           95 C
>passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940
>
>If I set the critical value to something really low, the Fan will kick
>in at it's full power and will try to cool down the PC, but that is
>while it's already halting.
>
>Anyone has a clue for me?
>
>Thanks,
>.Alejandro
>
>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-acpi"
in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html

RE: Compaq V2000 Fan Control

[Bonilla, Alejandro]

On Mon, 2006-03-27 at 16:25 +0400, Karasyov, Konstantin A wrote:
> Hi,
> 
> >cat /proc/acpi/thermal_zone/THR1/trip_points
> >critical (S5):           95 C
> >passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940
> 
> This means, that you don't have fan control (i.e. active cooling)
> through ACPI functionality - only passive cooling (i.e. decreasing
> frequency, using throttling) is possible for this thermal zone. So, in
> this string

I know I don't have it. Is there a way to debug this and see if it could
occur or if it just could be that it needs a tweak? Or is definitely not
going to work?

.Alejandro 

> 
> >echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points
> 
> the only meaningful values are the first and the third (but at least 5
> trip points are required -
> <critical>:<hot>:<passive>:<active0>:<active1>)
> 
> 
> Regards.
> Konstantin.
> 
> >-----Original Message-----
> >From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-
> >owner@vger.kernel.org] On Behalf Of Bonilla, Alejandro
> >Sent: Friday, March 24, 2006 11:28 PM
> >To: linux-acpi@vger.kernel.org
> >Subject: Compaq V2000 Fan Control
> >
> >Hi,
> >
> >I'm trying to make my Compaq laptop give me control over the fan using
> >ACPI, but this ain't working. I have to be honest. I don't know much
> >about debugging acpi or about tools that will tell me much more.
> >
> >Here is what I try:
> >
> >echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points
> >
> >If I set the critical to a value lower than what it is now, it will
> halt
> >the PC, which is good. (100)
> >
> >If I set the passive to 50, nothing occurs. The Fan is not kicked if
> the
> >temp is higher, like 60c.
> >
> >I was told the last value is the one that triggers the Fan. Still, it
> >just won't work for me.
> >
> >This is the value that comes up on boot:
> >cat /proc/acpi/thermal_zone/THR1/trip_points
> >critical (S5):           95 C
> >passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940
> >
> >If I set the critical value to something really low, the Fan will kick
> >in at it's full power and will try to cool down the PC, but that is
> >while it's already halting.
> >
> >Anyone has a clue for me?
> >
> >Thanks,
> >.Alejandro
> >
> >
> >-
> >To unsubscribe from this list: send the line "unsubscribe linux-acpi"
> in
> >the body of a message to majordomo@vger.kernel.org
> >More majordomo info at  http://vger.kernel.org/majordomo-info.html
> -
> To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: Compaq V2000 Fan Control

[Matthew Garrett]

On Mon, Mar 27, 2006 at 06:41:17PM -0600, Bonilla, Alejandro wrote:

> I know I don't have it. Is there a way to debug this and see if it could
> occur or if it just could be that it needs a tweak? Or is definitely not
> going to work?

Your laptop doesn't expose the fan as an ACPI object. As a result, 
there's no way to control it through the standard ACPI interfaces.

-- 
Matthew Garrett | mjg59@srcf.ucam.org

RE: Compaq V2000 Fan Control

[Yu, Luming]

>> I know I don't have it. Is there a way to debug this and see 
>if it could
>> occur or if it just could be that it needs a tweak? Or is 
>definitely not
>> going to work?
>
>Your laptop doesn't expose the fan as an ACPI object. As a result, 
>there's no way to control it through the standard ACPI interfaces.

Not precisely.  Fan control sometimes are side effect of AML methods.
If you do want to understand how fan control is implemented in AML
methods,
probably, you need to hack DSDT. 

If no explict Fan control, at least we need to make sure implicit fan
control works
But, it depends on platform vendor to implement Fan control in ACPI or
not.

Thanks,
Luming

RE: Compaq V2000 Fan Control

[Karasyov, Konstantin A]

Hi,

If you have any devices with 'PNP0C0B' ID in your DSDT then there is a
chance that you can assign it to _ALx method in thermal zone.

Anyway, posting your DSDT would help to clarify the issue. 

Regards.
Konstantin.

>-----Original Message-----
>From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-
>owner@vger.kernel.org] On Behalf Of Bonilla, Alejandro
>Sent: Tuesday, March 28, 2006 4:41 AM
>To: Karasyov, Konstantin A
>Cc: linux-acpi@vger.kernel.org
>Subject: RE: Compaq V2000 Fan Control
>
>On Mon, 2006-03-27 at 16:25 +0400, Karasyov, Konstantin A wrote:
>> Hi,
>>
>> >cat /proc/acpi/thermal_zone/THR1/trip_points
>> >critical (S5):           95 C
>> >passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940
>>
>> This means, that you don't have fan control (i.e. active cooling)
>> through ACPI functionality - only passive cooling (i.e. decreasing
>> frequency, using throttling) is possible for this thermal zone. So,
in
>> this string
>
>I know I don't have it. Is there a way to debug this and see if it
could
>occur or if it just could be that it needs a tweak? Or is definitely
not
>going to work?
>
>.Alejandro
>
>>
>> >echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points
>>
>> the only meaningful values are the first and the third (but at least
5
>> trip points are required -
>> <critical>:<hot>:<passive>:<active0>:<active1>)
>>
>>
>> Regards.
>> Konstantin.
>>
>> >-----Original Message-----
>> >From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-
>> >owner@vger.kernel.org] On Behalf Of Bonilla, Alejandro
>> >Sent: Friday, March 24, 2006 11:28 PM
>> >To: linux-acpi@vger.kernel.org
>> >Subject: Compaq V2000 Fan Control
>> >
>> >Hi,
>> >
>> >I'm trying to make my Compaq laptop give me control over the fan
using
>> >ACPI, but this ain't working. I have to be honest. I don't know much
>> >about debugging acpi or about tools that will tell me much more.
>> >
>> >Here is what I try:
>> >
>> >echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points
>> >
>> >If I set the critical to a value lower than what it is now, it will
>> halt
>> >the PC, which is good. (100)
>> >
>> >If I set the passive to 50, nothing occurs. The Fan is not kicked if
>> the
>> >temp is higher, like 60c.
>> >
>> >I was told the last value is the one that triggers the Fan. Still,
it
>> >just won't work for me.
>> >
>> >This is the value that comes up on boot:
>> >cat /proc/acpi/thermal_zone/THR1/trip_points
>> >critical (S5):           95 C
>> >passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940
>> >
>> >If I set the critical value to something really low, the Fan will
kick
>> >in at it's full power and will try to cool down the PC, but that is
>> >while it's already halting.
>> >
>> >Anyone has a clue for me?
>> >
>> >Thanks,
>> >.Alejandro
>> >
>> >
>> >-
>> >To unsubscribe from this list: send the line "unsubscribe
linux-acpi"
>> in
>> >the body of a message to majordomo@vger.kernel.org
>> >More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> -
>> To unsubscribe from this list: send the line "unsubscribe linux-acpi"
in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-acpi"
in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html

RE: Compaq V2000 Fan Control

[Bonilla, Alejandro]

Hi,

	I don't know much about ACPI and even less with the stuff you just
said... :) What should I post? 

Thanks,


On Mon, 2006-04-03 at 19:38 +0400, Karasyov, Konstantin A wrote:
> Hi,
> 
> If you have any devices with 'PNP0C0B' ID in your DSDT then there is a
> chance that you can assign it to _ALx method in thermal zone.
> 
> Anyway, posting your DSDT would help to clarify the issue. 
> 
> Regards.
> Konstantin.
> 
> >-----Original Message-----
> >From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-
> >owner@vger.kernel.org] On Behalf Of Bonilla, Alejandro
> >Sent: Tuesday, March 28, 2006 4:41 AM
> >To: Karasyov, Konstantin A
> >Cc: linux-acpi@vger.kernel.org
> >Subject: RE: Compaq V2000 Fan Control
> >
> >On Mon, 2006-03-27 at 16:25 +0400, Karasyov, Konstantin A wrote:
> >> Hi,
> >>
> >> >cat /proc/acpi/thermal_zone/THR1/trip_points
> >> >critical (S5):           95 C
> >> >passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940
> >>
> >> This means, that you don't have fan control (i.e. active cooling)
> >> through ACPI functionality - only passive cooling (i.e. decreasing
> >> frequency, using throttling) is possible for this thermal zone. So,
> in
> >> this string
> >
> >I know I don't have it. Is there a way to debug this and see if it
> could
> >occur or if it just could be that it needs a tweak? Or is definitely
> not
> >going to work?
> >
> >.Alejandro
> >
> >>
> >> >echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points
> >>
> >> the only meaningful values are the first and the third (but at least
> 5
> >> trip points are required -
> >> <critical>:<hot>:<passive>:<active0>:<active1>)
> >>
> >>
> >> Regards.
> >> Konstantin.
> >>
> >> >-----Original Message-----
> >> >From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-
> >> >owner@vger.kernel.org] On Behalf Of Bonilla, Alejandro
> >> >Sent: Friday, March 24, 2006 11:28 PM
> >> >To: linux-acpi@vger.kernel.org
> >> >Subject: Compaq V2000 Fan Control
> >> >
> >> >Hi,
> >> >
> >> >I'm trying to make my Compaq laptop give me control over the fan
> using
> >> >ACPI, but this ain't working. I have to be honest. I don't know much
> >> >about debugging acpi or about tools that will tell me much more.
> >> >
> >> >Here is what I try:
> >> >
> >> >echo 100:0:50:80:70:50 > /proc/acpi/thermal_zone/THR1/trip_points
> >> >
> >> >If I set the critical to a value lower than what it is now, it will
> >> halt
> >> >the PC, which is good. (100)
> >> >
> >> >If I set the passive to 50, nothing occurs. The Fan is not kicked if
> >> the
> >> >temp is higher, like 60c.
> >> >
> >> >I was told the last value is the one that triggers the Fan. Still,
> it
> >> >just won't work for me.
> >> >
> >> >This is the value that comes up on boot:
> >> >cat /proc/acpi/thermal_zone/THR1/trip_points
> >> >critical (S5):           95 C
> >> >passive:                 88 C: tc1=2 tc2=3 tsp=50 devices=0xdf64a940
> >> >
> >> >If I set the critical value to something really low, the Fan will
> kick
> >> >in at it's full power and will try to cool down the PC, but that is
> >> >while it's already halting.
> >> >
> >> >Anyone has a clue for me?
> >> >
> >> >Thanks,
> >> >.Alejandro
> >> >
> >> >
> >> >-
> >> >To unsubscribe from this list: send the line "unsubscribe
> linux-acpi"
> >> in
> >> >the body of a message to majordomo@vger.kernel.org
> >> >More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >> -
> >> To unsubscribe from this list: send the line "unsubscribe linux-acpi"
> in
> >> the body of a message to majordomo@vger.kernel.org
> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> >-
> >To unsubscribe from this list: send the line "unsubscribe linux-acpi"
> in
> >the body of a message to majordomo@vger.kernel.org
> >More majordomo info at  http://vger.kernel.org/majordomo-info.html
> -
> To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html