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Back out the fan control changes that were merged in revision 1.2.2.5.
The necessary changes to the driver haven't been merged yet, which won't happen before 6.1-RELEASE. Submitted by: markus Approved by: re (scottl)
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=157545
@ -281,28 +281,8 @@ Toggle Bluetooth chip activity.
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(read-only)
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Indicates whether the WLAN chip is active or not.
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.It Va dev.acpi_ibm.0.fan
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Indicates whether the fan is in automatic (1) or manual (0) mode.
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Default is automatic mode.
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This sysctl should be used with extreme precaution, since disabling automatic
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fan control might overheat the ThinkPad and lead to permanent damage if the
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.Va fan_level
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is not set accordingly.
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.It Va dev.acpi_ibm.0.fan_level
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Indicates at what speed the fan should run when being in manual mode.
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Values are ranging from 0 (off) to 7 (max).
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The resulting speed differs from model to model.
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On a T41p this is as follows:
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.Pp
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.Bl -tag -width indent-two -compact
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.It Li 0
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off
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.It Li 1, 2
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~3000 RPM
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.It Li 3, 4, 5
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~3600 RPM
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.It Li 6, 7
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~4300 RPM
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.El
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(read-only)
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Indicates whether the fan is on or off.
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.It Va dev.acpi_ibm.0.fan_speed
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(read-only)
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Fan speed in rounds per minute.
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