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    SubjectRe: [PATCH 0/8] [Resend] ideapad: using EC command to control rf/camera power
    Hi Mario,

    I look at the DSDT again and again but unfortunately can not find anything
    may cause the bluetooth device initial failed. BTEN looks like the switch
    for EC to turn on/off bluetooth, BTST records the status of BTEN and BTPS
    means bluetooth present. But no idea why initial failed after BTEN=1

    So I fall back to your suggestion. Have a module parameter to tell module
    not to register rfkill for bluetooth.

    I prepare the driver and please spend some time testing. Driver is at;a=blob;f=drivers/platform/x86/ideapad-laptop.c;h=c4cf46a363f3f72d6db5339ec326d282d7e58183;hb=26a58948693b7d25960299a8025e569e68f28937

    and you may use "insmod ideapad-laptop.ko no_bt_rfkill=1" for your S12.

    For more information, please see the following link:;a=commit;h=26a58948693b7d25960299a8025e569e68f28937

    On 09/02/2010 03:56 AM, Mario 'BitKoenig' Holbe wrote:
    > On Wed, Sep 01, 2010 at 07:49:52PM +0800, Ike Panhc wrote:
    >> Your log tells a lot. It tells me if the bluetooth init failed. Then we
    >> have to turning off and power on again by hw switch to make it alive again.
    >> So, I believe we have two issue here.
    >> * when rfkill unblock, sometimes bluetooth init failed.
    > Yes.
    >> * power up system after rfkill block bluetooth, sometimes the cfgbit = 0xc0000
    >> Am I correct?
    > Not completely.
    > * reboot system after rfkill block bluetooth, sometimes the cfgbit = 0xc0000
    > I never had cfgbit = 0xc0000 when I power-cycled the system, only when I
    > rebooted it.
    > This is why I belive the second point has virtually the same reason as
    > the first point: bluetooth device initialization fails and thus its
    > detection by BIOS fails and thus ACPI returns 0xc0000 cfg.
    > Hence, I belive chances are high that solving the first point does also
    > solve the second.
    > While thinking about it... the init problems persisting a reboot could
    > also mean that not the unblock operation is the real issue but the block
    > operation - which probably leaves the bluetooth device in kind of a
    > semi-disabled state or something like that.
    > regards
    > Mario

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