https://bugzilla.kernel.org/show_bug.cgi?id=26462
Summary: Fan doesn't work when ACPI is running
Product: ACPI
Version: 2.5
Kernel Version: 2.6.37
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Fan
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Created an attachment (id=43052)
--> (https://bugzilla.kernel.org/attachment.cgi?id=43052)
DSDT.dsl, dmesg output, lshw output when using ACPI
Hello. First of all I apologize for my bad English if I express anything wrong.
I'm using a Haier T68D laptop running Ubuntu, but the fan doesn't work when
ACPI is running. No related errors can be found in dmesg, and I commented the
FOFF() method in DSDT:
Method (FCTL, 0, Serialized)
{
Store (" ---- FCTL ----", Debug)
FindSetRightBit (FSTA, Local1)
If (LEqual (FSTA, 0x00))
{
//FOFF ()
}
and fan works, but the kacpid_notify process will eat up one of my CPUs after
a while...for 2.6.37, this method also doesn't work...I even commented some
code in fan.c:
static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state)
{
if (!device)
return -EINVAL;
//acpi_bus_set_power(device->handle, ACPI_STATE_D0);
return AE_OK;
}
but that also doesn't help...Now I have to boot the kernel with "acpi=off
noapic". In fact, I tried many kernel parameters and found "pci=noacpi" and
"acpi=noirq" made the fan work, but when using them, the keyboard and touchpad
will stop responding.
I don't know when exactly this bug appears... The earliest kernel I tried is
2.6.31, which also has this problem.
Note: All the other features of ACPI, except for the touchpad disable key in
asus_laptop, are functioning well since 2.6.37. The ACPI Battery system zomb
has gone, now it knows when the AC wire is unplugged.
DSDT, dmesg and lshw when using acpi is attached. Thanks for your help.
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