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

From: Guenter Roeck
Date: Thu May 22 2014 - 01:37:01 EST


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@xxxxxxxxxxxx>

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

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