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Wed, 24 Sep 2025 07:46:35 -0700 (PDT) Sender: Guenter Roeck Date: Wed, 24 Sep 2025 07:46:34 -0700 From: Guenter Roeck To: Armin Wolf Cc: pali@kernel.org, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/4] hwmon: (dell-smm) Remove Dell Precision 490 custom config data Message-ID: References: <20250917181036.10972-1-W_Armin@gmx.de> <20250917181036.10972-2-W_Armin@gmx.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250917181036.10972-2-W_Armin@gmx.de> On Wed, Sep 17, 2025 at 08:10:33PM +0200, Armin Wolf wrote: > It turns out the second fan on the Dell Precision 490 does not > really support I8K_FAN_TURBO. Setting the fan state to 3 enables > automatic fan control, just like on the other two fans. > The reason why this was misinterpreted as turbo mode was that > the second fan normally spins faster in automatic mode than > in the previous fan states. Yet when in state 3, the fan speed > reacts to heat exposure, exposing the automatic mode setting. > > Link: https://github.com/lm-sensors/lm-sensors/pull/383 > Signed-off-by: Armin Wolf Applied. Guenter