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    SubjectRe: regression in linux 3.7 - fan speed at 100% after suspend/resume at 100%
    Hi,
    any news about this issue ? I'm still seeing the problem with the
    released 3.7 (and also with 3.7.1).
    Let me know if you need more info or testing.

    Kind regards
    R

    Il 05/12/2012 08:30, Roberto Oppedisano ha scritto:
    > Hello Rui
    >
    > Il 04/12/2012 15:11, Zhang Rui ha scritto:
    >> Hi, Roberto,
    >>
    >> please attach the acpidump output.
    >
    > attached.
    >
    >> On Tue, 2012-12-04 at 13:57 +0100, Roberto Oppedisano wrote:
    >>> Hello,
    >>> with recent kernels after a suspend/resume cycle on my laptop (HP
    >>> 6730b) the fans stays at full speed.
    >> does the fan keep running at full speed after resume?
    >
    > yes, the fan never stops and runs always at full speed.
    >
    >
    >> please attach the output of "grep . /sys/class/thermal/*/*" before
    >> suspend and when the fan is running at full speed.
    >> please attach the same stuff in a good kernel.
    >
    > See attached files.
    > 3.6.9 is the good kernel where the fan behaves correctly.
    > 3.7.0+git is the bad one.
    >
    > Kind regards
    > R
    >
    >>
    >>
    >> thanks,
    >> rui
    >>
    >>
    >>> I've bisected down to this commit:
    >>>
    >>> ce119f83257aae29b84a5bfad0669e8348437b18 is the first bad commit
    >>> commit ce119f83257aae29b84a5bfad0669e8348437b18
    >>> Author: Zhang Rui <rui.zhang@intel.com>
    >>> Date: Wed Jun 27 14:13:04 2012 +0800
    >>>
    >>> Thermal: Introduce simple arbitrator for setting device
    >>> cooling state
    >>>
    >>> This fixes the problem that a cooling device may be referenced by
    >>> by multiple trip points in multiple thermal zones.
    >>>
    >>> With this patch, we have two stages for updating a thermal zone,
    >>> 1. check if a thermal_instance needs to be updated or not
    >>> 2. update the cooling device, based on the target cooling state
    >>> of all its instances.
    >>>
    >>> Note that, currently, the cooling device is set to the deepest
    >>> cooling state required.
    >>>
    >>> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
    >>> Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
    >>> Reviewed-by: Eduardo Valentin <eduardo.valentin@ti.com>
    >>>
    >>> :040000 040000 8469b057ee5b33bdb264624db35c951d0ecdb66b
    >>> d7288437cff3c7437e59144c46c04c78669a597b M drivers
    >>> :040000 040000 397296161d55c825f07501470130928d226497cc
    >>> f715fd1770dd33fd333c5fa339e740537b2a916f M include
    >>>
    >>> I tried to revert it but there are rejects so I cold not try current
    >>> kernel with simply this commit removed.
    >>>
    >>> As a side note when the fan is at full speed a see an anomaly on
    >>> thermal
    >>> indicator #4
    >>>
    >>> $ grep 0 /sys/devices/virtual/thermal/thermal_zone*/temp
    >>> /sys/devices/virtual/thermal/thermal_zone0/temp:59000
    >>> /sys/devices/virtual/thermal/thermal_zone1/temp:63000
    >>> /sys/devices/virtual/thermal/thermal_zone2/temp:48000
    >>> /sys/devices/virtual/thermal/thermal_zone3/temp:27900
    >>> /sys/devices/virtual/thermal/thermal_zone4/temp:100000
    >>>
    >>> while the others seem to report normal value. Attached the output of
    >>> dmesg on this laptop.
    >>>
    >>> More info/testing on request.
    >>>
    >>> Kind regards
    >>> R
    >>
    >>
    >


    --
    Roberto Oppedisano
    Infracom Italia S.p.A.
    Ingegneria d'offerta
    Tel. +39 0459692691
    Mob. +39 3487419534



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