[PATCH] i8k: increase fan limit to 3

[PATCH] i8k: increase fan limit to 3

[Flavio Leitner]

From: Flavio Leitner <fbl@sysclose.org>

It is possible to increase left fan speed on a
DELL Precision 490n system up to 3.

    value    fan rpm
      1      35460
      2      64740
      3      78510

Signed-off-by: Flavio Leitner <fbl@sysclose.org>
---
 drivers/char/i8k.c       | 4 ++--
 include/uapi/linux/i8k.h | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index d915707..99180f0 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -519,7 +519,7 @@ static ssize_t i8k_hwmon_show_pwm(struct device *dev,
 	status = i8k_get_fan_status(index);
 	if (status < 0)
 		return -EIO;
-	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 255));
+	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 384));
 }
 
 static ssize_t i8k_hwmon_set_pwm(struct device *dev,
@@ -533,7 +533,7 @@ static ssize_t i8k_hwmon_set_pwm(struct device *dev,
 	err = kstrtoul(buf, 10, &val);
 	if (err)
 		return err;
-	val = clamp_val(DIV_ROUND_CLOSEST(val, 128), 0, 2);
+	val = clamp_val(DIV_ROUND_CLOSEST(val, 128), 0, 3);
 
 	mutex_lock(&i8k_mutex);
 	err = i8k_set_fan(index, val);
diff --git a/include/uapi/linux/i8k.h b/include/uapi/linux/i8k.h
index 1c45ba5..133d02f 100644
--- a/include/uapi/linux/i8k.h
+++ b/include/uapi/linux/i8k.h
@@ -34,7 +34,8 @@
 #define I8K_FAN_OFF		0
 #define I8K_FAN_LOW		1
 #define I8K_FAN_HIGH		2
-#define I8K_FAN_MAX		I8K_FAN_HIGH
+#define I8K_FAN_TURBO		3
+#define I8K_FAN_MAX		I8K_FAN_TURBO
 
 #define I8K_VOL_UP		1
 #define I8K_VOL_DOWN		2
-- 
1.9.0

Re: [PATCH] i8k: increase fan limit to 3

[Guenter Roeck]

On 05/21/2014 07:19 PM, Flavio Leitner wrote:
> From: Flavio Leitner <fbl@sysclose.org>
>
> It is possible to increase left fan speed on a
> DELL Precision 490n system up to 3.
>
>      value    fan rpm
>        1      35460
>        2      64740
>        3      78510
>
Guess the speed factor 30 doesn't apply here.

> Signed-off-by: Flavio Leitner <fbl@sysclose.org>
> ---
>   drivers/char/i8k.c       | 4 ++--
>   include/uapi/linux/i8k.h | 3 ++-
>   2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
> index d915707..99180f0 100644
> --- a/drivers/char/i8k.c
> +++ b/drivers/char/i8k.c
> @@ -519,7 +519,7 @@ static ssize_t i8k_hwmon_show_pwm(struct device *dev,
>   	status = i8k_get_fan_status(index);
>   	if (status < 0)
>   		return -EIO;
> -	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 255));
> +	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 384));
>   }
>
>   static ssize_t i8k_hwmon_set_pwm(struct device *dev,
> @@ -533,7 +533,7 @@ static ssize_t i8k_hwmon_set_pwm(struct device *dev,
>   	err = kstrtoul(buf, 10, &val);
>   	if (err)
>   		return err;
> -	val = clamp_val(DIV_ROUND_CLOSEST(val, 128), 0, 2);
> +	val = clamp_val(DIV_ROUND_CLOSEST(val, 128), 0, 3);
>
>   	mutex_lock(&i8k_mutex);
>   	err = i8k_set_fan(index, val);
> diff --git a/include/uapi/linux/i8k.h b/include/uapi/linux/i8k.h
> index 1c45ba5..133d02f 100644
> --- a/include/uapi/linux/i8k.h
> +++ b/include/uapi/linux/i8k.h
> @@ -34,7 +34,8 @@
>   #define I8K_FAN_OFF		0
>   #define I8K_FAN_LOW		1
>   #define I8K_FAN_HIGH		2
> -#define I8K_FAN_MAX		I8K_FAN_HIGH
> +#define I8K_FAN_TURBO		3
> +#define I8K_FAN_MAX		I8K_FAN_TURBO
>
>   #define I8K_VOL_UP		1
>   #define I8K_VOL_DOWN		2
>

I'll have to test this on older systems to make sure it doesn't cause problems there.

Guenter

Re: [PATCH] i8k: increase fan limit to 3

[Flavio Leitner]

On Wed, May 21, 2014 at 08:32:24PM -0700, Guenter Roeck wrote:
> On 05/21/2014 07:19 PM, Flavio Leitner wrote:
> >From: Flavio Leitner <fbl@sysclose.org>
> >
> >It is possible to increase left fan speed on a
> >DELL Precision 490n system up to 3.
> >
> >     value    fan rpm
> >       1      35460
> >       2      64740
> >       3      78510
> >
> Guess the speed factor 30 doesn't apply here.

Those are actual rpms, not just a multiplied rpm. What I mean
is that you can hear the fan spinning up or down and the
temperature going up or down accordingly.

But even setting it to 3 is not enough to spin at maximum
speed. Anyway, now I can load the system without the FBDIMM
going above 75oC.

[...]
> I'll have to test this on older systems to make sure it doesn't cause problems there.

Sure, let me know your findings. In meanwhile, I am using the patch here.
Thanks,
fbl

Re: [PATCH] i8k: increase fan limit to 3

[Guenter Roeck]

On 05/21/2014 08:45 PM, Flavio Leitner wrote:
> On Wed, May 21, 2014 at 08:32:24PM -0700, Guenter Roeck wrote:
>> On 05/21/2014 07:19 PM, Flavio Leitner wrote:
>>> From: Flavio Leitner <fbl@sysclose.org>
>>>
>>> It is possible to increase left fan speed on a
>>> DELL Precision 490n system up to 3.
>>>
>>>      value    fan rpm
>>>        1      35460
>>>        2      64740
>>>        3      78510
>>>
>> Guess the speed factor 30 doesn't apply here.
>
> Those are actual rpms, not just a multiplied rpm. What I mean
> is that you can hear the fan spinning up or down and the
> temperature going up or down accordingly.
>
I don't think there are any fans running at 78k rpm. The real speed
is 78,510 / 30 or 2,617 rpm. You should set the fan_mult module
parameter to 1 for your system.

> But even setting it to 3 is not enough to spin at maximum
> speed. Anyway, now I can load the system without the FBDIMM
> going above 75oC.
>
Did you try to set higher values ?

Guenter

Re: [PATCH] i8k: increase fan limit to 3

[Thomas Bogendoerfer]

On Wed, May 21, 2014 at 08:32:24PM -0700, Guenter Roeck wrote:
> On 05/21/2014 07:19 PM, Flavio Leitner wrote:
> >From: Flavio Leitner <fbl@sysclose.org>
> >
> >It is possible to increase left fan speed on a
> >DELL Precision 490n system up to 3.
> >
> >     value    fan rpm
> >       1      35460
> >       2      64740
> >       3      78510
> >
> Guess the speed factor 30 doesn't apply here.

on my vostro 1720 value 3 is default value and it looks like
it's sort of an auto mode.

BTW. the only fan in the system is on the left side, but shows up as
RigthFan. Wouldn't it be better to simply number the fans and let the
"real" labeling be done via sensors.conf ?

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]

Re: [PATCH] i8k: increase fan limit to 3

[Flavio Leitner]

On Wed, May 21, 2014 at 10:36:45PM -0700, Guenter Roeck wrote:
> On 05/21/2014 08:45 PM, Flavio Leitner wrote:
> >On Wed, May 21, 2014 at 08:32:24PM -0700, Guenter Roeck wrote:
> >>On 05/21/2014 07:19 PM, Flavio Leitner wrote:
> >>>From: Flavio Leitner <fbl@sysclose.org>
> >>>
> >>>It is possible to increase left fan speed on a
> >>>DELL Precision 490n system up to 3.
> >>>
> >>>     value    fan rpm
> >>>       1      35460
> >>>       2      64740
> >>>       3      78510
> >>>
> >>Guess the speed factor 30 doesn't apply here.
> >
> >Those are actual rpms, not just a multiplied rpm. What I mean
> >is that you can hear the fan spinning up or down and the
> >temperature going up or down accordingly.
> >
> I don't think there are any fans running at 78k rpm. The real speed
> is 78,510 / 30 or 2,617 rpm. You should set the fan_mult module
> parameter to 1 for your system.

Sure. I will do that. I didn't want to change anything else besides
the speed level and that is what sensors reports by default.

> >But even setting it to 3 is not enough to spin at maximum
> >speed. Anyway, now I can load the system without the FBDIMM
> >going above 75oC.
> >
> Did you try to set higher values ?

Up to 4 which did nothing that I could notice.
No difference regarding to noise or temp or rpm.

fbl

Re: [PATCH] i8k: increase fan limit to 3

[Guenter Roeck]

On Wed, May 21, 2014 at 11:19:28PM -0300, Flavio Leitner wrote:
> From: Flavio Leitner <fbl@sysclose.org>
> 
> It is possible to increase left fan speed on a
> DELL Precision 490n system up to 3.
> 
>     value    fan rpm
>       1      35460
>       2      64740
>       3      78510
> 
> Signed-off-by: Flavio Leitner <fbl@sysclose.org>
> ---
>  drivers/char/i8k.c       | 4 ++--
>  include/uapi/linux/i8k.h | 3 ++-
>  2 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
> index d915707..99180f0 100644
> --- a/drivers/char/i8k.c
> +++ b/drivers/char/i8k.c
> @@ -519,7 +519,7 @@ static ssize_t i8k_hwmon_show_pwm(struct device *dev,
>  	status = i8k_get_fan_status(index);
>  	if (status < 0)
>  		return -EIO;
> -	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 255));
> +	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 384));

pwm value range is limited to (0, 255), so we'll have to find another
solution. I think we'll have to define a per-system data structure
which holds the fan speed range and the fan multiplier, and attach it
to the dmi data. Currently, .driver_data is used directly to override
the fan multiplier; it will have to point to a configuration data
structure with both fan multiplier and maximum fan speed value.
Unless someone has a better idea, of course.

Guenter

Re: [PATCH] i8k: increase fan limit to 3

[Guenter Roeck]

On Thu, May 22, 2014 at 10:28:31AM +0200, Thomas Bogendoerfer wrote:
> On Wed, May 21, 2014 at 08:32:24PM -0700, Guenter Roeck wrote:
> > On 05/21/2014 07:19 PM, Flavio Leitner wrote:
> > >From: Flavio Leitner <fbl@sysclose.org>
> > >
> > >It is possible to increase left fan speed on a
> > >DELL Precision 490n system up to 3.
> > >
> > >     value    fan rpm
> > >       1      35460
> > >       2      64740
> > >       3      78510
> > >
> > Guess the speed factor 30 doesn't apply here.
> 
> on my vostro 1720 value 3 is default value and it looks like
> it's sort of an auto mode.
> 
> BTW. the only fan in the system is on the left side, but shows up as
> RigthFan. Wouldn't it be better to simply number the fans and let the
> "real" labeling be done via sensors.conf ?
> 
I agree. Jean, any comments ? Is it ok to drop the fan labels ?

Guenter

Re: [PATCH] i8k: increase fan limit to 3

[Flavio Leitner]

On Thu, May 22, 2014 at 08:10:48AM -0700, Guenter Roeck wrote:
> On Wed, May 21, 2014 at 11:19:28PM -0300, Flavio Leitner wrote:
> > From: Flavio Leitner <fbl@sysclose.org>
> > 
> > It is possible to increase left fan speed on a
> > DELL Precision 490n system up to 3.
> > 
> >     value    fan rpm
> >       1      35460
> >       2      64740
> >       3      78510
> > 
> > Signed-off-by: Flavio Leitner <fbl@sysclose.org>
> > ---
> >  drivers/char/i8k.c       | 4 ++--
> >  include/uapi/linux/i8k.h | 3 ++-
> >  2 files changed, 4 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
> > index d915707..99180f0 100644
> > --- a/drivers/char/i8k.c
> > +++ b/drivers/char/i8k.c
> > @@ -519,7 +519,7 @@ static ssize_t i8k_hwmon_show_pwm(struct device *dev,
> >  	status = i8k_get_fan_status(index);
> >  	if (status < 0)
> >  		return -EIO;
> > -	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 255));
> > +	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 384));
> 
> pwm value range is limited to (0, 255), so we'll have to find another
> solution.

You mean in the hw? Because the code today just multiply by 128 so
you have 0, 128 and 256 as possible pwm values. See below.

> I think we'll have to define a per-system data structure
> which holds the fan speed range and the fan multiplier, and attach it
> to the dmi data. Currently, .driver_data is used directly to override
> the fan multiplier; it will have to point to a configuration data
> structure with both fan multiplier and maximum fan speed value.
> Unless someone has a better idea, of course.

Sounds good to me.  It could provide a generic one that works as
today in case there is no specific per-system data structure.

It could also include the status multiplier so that for systems with
levels off, minimum and maximum then use x128 and systems with more
states can use another multiplier.

I volunteer to test on precision 490n and on latitude D520.

fbl

Re: [PATCH] i8k: increase fan limit to 3

[Jean Delvare]

On Thu, 22 May 2014 08:12:59 -0700, Guenter Roeck wrote:
> On Thu, May 22, 2014 at 10:28:31AM +0200, Thomas Bogendoerfer wrote:
> > On Wed, May 21, 2014 at 08:32:24PM -0700, Guenter Roeck wrote:
> > > On 05/21/2014 07:19 PM, Flavio Leitner wrote:
> > > >From: Flavio Leitner <fbl@sysclose.org>
> > > >
> > > >It is possible to increase left fan speed on a
> > > >DELL Precision 490n system up to 3.
> > > >
> > > >     value    fan rpm
> > > >       1      35460
> > > >       2      64740
> > > >       3      78510
> > > >
> > > Guess the speed factor 30 doesn't apply here.
> > 
> > on my vostro 1720 value 3 is default value and it looks like
> > it's sort of an auto mode.
> > 
> > BTW. the only fan in the system is on the left side, but shows up as
> > RigthFan. Wouldn't it be better to simply number the fans and let the
> > "real" labeling be done via sensors.conf ?
> > 
> I agree. Jean, any comments ? Is it ok to drop the fan labels ?

Yes it is, I had that it mind already, just I don't have the time to do
it.

-- 
Jean Delvare
SUSE L3 Support

Re: [PATCH] i8k: increase fan limit to 3

[Guenter Roeck]

On Thu, May 22, 2014 at 12:54:58PM -0300, Flavio Leitner wrote:
> On Thu, May 22, 2014 at 08:10:48AM -0700, Guenter Roeck wrote:
> > On Wed, May 21, 2014 at 11:19:28PM -0300, Flavio Leitner wrote:
> > > From: Flavio Leitner <fbl@sysclose.org>
> > > 
> > > It is possible to increase left fan speed on a
> > > DELL Precision 490n system up to 3.
> > > 
> > >     value    fan rpm
> > >       1      35460
> > >       2      64740
> > >       3      78510
> > > 
> > > Signed-off-by: Flavio Leitner <fbl@sysclose.org>
> > > ---
> > >  drivers/char/i8k.c       | 4 ++--
> > >  include/uapi/linux/i8k.h | 3 ++-
> > >  2 files changed, 4 insertions(+), 3 deletions(-)
> > > 
> > > diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
> > > index d915707..99180f0 100644
> > > --- a/drivers/char/i8k.c
> > > +++ b/drivers/char/i8k.c
> > > @@ -519,7 +519,7 @@ static ssize_t i8k_hwmon_show_pwm(struct device *dev,
> > >  	status = i8k_get_fan_status(index);
> > >  	if (status < 0)
> > >  		return -EIO;
> > > -	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 255));
> > > +	return sprintf(buf, "%d\n", clamp_val(status * 128, 0, 384));
> > 
> > pwm value range is limited to (0, 255), so we'll have to find another
> > solution.
> 
> You mean in the hw? Because the code today just multiply by 128 so
> you have 0, 128 and 256 as possible pwm values. See below.
> 
No, in the hwmon sysfs ABI.

pwm[1-*]        Pulse width modulation fan control.
                Integer value in the range 0 to 255
		RW
		255 is max or 100%.

> > I think we'll have to define a per-system data structure
> > which holds the fan speed range and the fan multiplier, and attach it
> > to the dmi data. Currently, .driver_data is used directly to override
> > the fan multiplier; it will have to point to a configuration data
> > structure with both fan multiplier and maximum fan speed value.
> > Unless someone has a better idea, of course.
> 
> Sounds good to me.  It could provide a generic one that works as
> today in case there is no specific per-system data structure.
> 
> It could also include the status multiplier so that for systems with
> levels off, minimum and maximum then use x128 and systems with more
> states can use another multiplier.
> 
More likely the maximum accepted value to write into the hw,
but pretty much along that line, correct.

> I volunteer to test on precision 490n and on latitude D520.
> 
Can you send me dmi information for those systems ?
The output of "grep . /sys/class/dmi/id/*" should do.

Guenter

Re: [PATCH] i8k: increase fan limit to 3

[Flavio Leitner]

On Thu, May 22, 2014 at 11:00:23AM -0700, Guenter Roeck wrote:
> On Thu, May 22, 2014 at 12:54:58PM -0300, Flavio Leitner wrote:
> > On Thu, May 22, 2014 at 08:10:48AM -0700, Guenter Roeck wrote:
> > > On Wed, May 21, 2014 at 11:19:28PM -0300, Flavio Leitner wrote:
> > > > From: Flavio Leitner <fbl@sysclose.org>
> > I volunteer to test on precision 490n and on latitude D520.
> > 
> Can you send me dmi information for those systems ?
> The output of "grep . /sys/class/dmi/id/*" should do.

490n:
# grep . /sys/class/dmi/id/*
/sys/class/dmi/id/bios_date:05/24/2007
/sys/class/dmi/id/bios_vendor:Dell Inc.                
/sys/class/dmi/id/bios_version:A05
/sys/class/dmi/id/board_name:0GU083
/sys/class/dmi/id/board_serial:..CN1374075H003N.
/sys/class/dmi/id/board_vendor:Dell Inc.          
/sys/class/dmi/id/board_version:A00
/sys/class/dmi/id/chassis_asset_tag:        
/sys/class/dmi/id/chassis_serial:69FS6D1
/sys/class/dmi/id/chassis_type:7
/sys/class/dmi/id/chassis_vendor:Dell Inc.                
/sys/class/dmi/id/modalias:dmi:bvnDellInc.:bvrA05:bd05/24/2007:svnDellInc.:pnPrecisionWorkStation490:pvr:rvnDellInc.:rn0GU083:rvrA00:cvnDellInc.:ct7:cvr:
grep: /sys/class/dmi/id/power: Is a directory
/sys/class/dmi/id/product_name:Precision WorkStation 490    
/sys/class/dmi/id/product_serial:69FS6D1
/sys/class/dmi/id/product_uuid:44454C4C-3900-1046-8053-B6C04F364431
grep: /sys/class/dmi/id/subsystem: Is a directory
/sys/class/dmi/id/sys_vendor:Dell Inc.                
/sys/class/dmi/id/uevent:MODALIAS=dmi:bvnDellInc.:bvrA05:bd05/24/2007:svnDellInc.:pnPrecisionWorkStation490:pvr:rvnDellInc.:rn0GU083:rvrA00:cvnDellInc.:ct7:cvr:


d520:
#  grep . /sys/class/dmi/id/*
/sys/class/dmi/id/bios_date:10/13/2006
/sys/class/dmi/id/bios_vendor:Dell Inc.
/sys/class/dmi/id/bios_version:A02
/sys/class/dmi/id/board_asset_tag:        
/sys/class/dmi/id/board_name:0NF744
/sys/class/dmi/id/board_serial:.JYCM0C1.CN4864368I4174.
/sys/class/dmi/id/board_vendor:Dell Inc.
/sys/class/dmi/id/board_version:   
/sys/class/dmi/id/chassis_serial:JYCM0C1
/sys/class/dmi/id/chassis_type:8
/sys/class/dmi/id/chassis_vendor:Dell Inc.
/sys/class/dmi/id/modalias:dmi:bvnDellInc.:bvrA02:bd10/13/2006:svnDellInc.:pnLatitudeD520:pvr:rvnDellInc.:rn0NF744:rvr:cvnDellInc.:ct8:cvr:
grep: /sys/class/dmi/id/power: Is a directory
/sys/class/dmi/id/product_name:Latitude D520                   
/sys/class/dmi/id/product_serial:JYCM0C1
/sys/class/dmi/id/product_uuid:44454C4C-5900-1043-804D-CAC04F304331
grep: /sys/class/dmi/id/subsystem: Is a directory
/sys/class/dmi/id/sys_vendor:Dell Inc.
/sys/class/dmi/id/uevent:MODALIAS=dmi:bvnDellInc.:bvrA02:bd10/13/2006:svnDellInc.:pnLatitudeD520:pvr:rvnDellInc.:rn0NF744:rvr:cvnDellInc.:ct8:cvr:

fbl

Re: [PATCH] i8k: increase fan limit to 3

[Guenter Roeck]

On 05/23/2014 10:09 AM, Flavio Leitner wrote:
> On Thu, May 22, 2014 at 11:00:23AM -0700, Guenter Roeck wrote:
>> On Thu, May 22, 2014 at 12:54:58PM -0300, Flavio Leitner wrote:
>>> On Thu, May 22, 2014 at 08:10:48AM -0700, Guenter Roeck wrote:
>>>> On Wed, May 21, 2014 at 11:19:28PM -0300, Flavio Leitner wrote:
>>>>> From: Flavio Leitner <fbl@sysclose.org>
>>> I volunteer to test on precision 490n and on latitude D520.
>>>
>> Can you send me dmi information for those systems ?
>> The output of "grep . /sys/class/dmi/id/*" should do.
>

> /sys/class/dmi/id/chassis_vendor:Dell Inc.
> /sys/class/dmi/id/product_name:Latitude D520

What is the maximum speed value for the D520 ?

Thanks,
Guenter

Re: [PATCH] i8k: increase fan limit to 3

[Flavio Leitner]

On Fri, May 23, 2014 at 11:33:11AM -0700, Guenter Roeck wrote:
> On 05/23/2014 10:09 AM, Flavio Leitner wrote:
> >On Thu, May 22, 2014 at 11:00:23AM -0700, Guenter Roeck wrote:
> >>On Thu, May 22, 2014 at 12:54:58PM -0300, Flavio Leitner wrote:
> >>>On Thu, May 22, 2014 at 08:10:48AM -0700, Guenter Roeck wrote:
> >>>>On Wed, May 21, 2014 at 11:19:28PM -0300, Flavio Leitner wrote:
> >>>>>From: Flavio Leitner <fbl@sysclose.org>
> >>>I volunteer to test on precision 490n and on latitude D520.
> >>>
> >>Can you send me dmi information for those systems ?
> >>The output of "grep . /sys/class/dmi/id/*" should do.
> >
> 
> >/sys/class/dmi/id/chassis_vendor:Dell Inc.
> >/sys/class/dmi/id/product_name:Latitude D520
> 
> What is the maximum speed value for the D520 ?

D520, with no factor change:

   i8kfan     i8kctl
*  -   0      1.0 A02 JYCM0C1 31 -1 0 27660 0 0 -1
   -   0      1.0 A02 JYCM0C1 28 -1 0 27660 0 0 -1
   -   1      1.0 A02 JYCM0C1 29 -1 1 27660 97050 0 -1
   -   2      1.0 A02 JYCM0C1 28 -1 2 27660 153660 0 -1
   -   3      1.0 A02 JYCM0C1 28 -1 2 27660 155280 0 -1
   0   -      1.0 A02 JYCM0C1 28 -1 0 27660 0 0 -1
   1   -      1.0 A02 JYCM0C1 28 -1 0 27660 0 0 -1
   2   -      1.0 A02 JYCM0C1 29 -1 0 27660 0 0 -1
   3   -      1.0 A02 JYCM0C1 29 -1 0 27660 0 0 -1

[*] default after boot.

The level 3 doesn't change anything.  Actually i8kfan
reports -1 then.

fbl