Hey,
This tablet:
http://www.amazon.com/WinBook-10-1-Inch-Windows-full-size-Display/dp/B00N9ZG5U2/
doesn't have a physical lid switch unless you plug the keyboard accessory to it.
But it thinks that there is a lid, and that it's closed, making logind
suspend the machine after about 30 seconds.
I'm currently testing this on a 4.0 kernel, as there have been
regressions on Baytrail with 4.1 and 4.2rcs.
The DSDT for that tablet:
https://people.gnome.org/~hadess/Winbook%20TW100%20DSDT.dsl
Any ideas how to handle this sort of device?
Cheers
Hi,
The _LID returns LIDS:
Device (LID)
{
Name (_HID, EisaId ("PNP0C0D") /* Lid Device */) // _HID: Hardware ID
Name (LIDS, Zero)
Method (_LID, 0, NotSerialized) // _LID: Lid Status
{
Return (LIDS) /* \_SB_.LID_.LIDS */
}
}
All LIDS related code can be found:
Line 132: LIDS, 8,
Line 5400: PARM |= (LIDS << 0x10)
Line 5566: PARM = (LIDS << 0x08)
Line 11792: ^^LID.LIDS = Zero
* Line 11802: ^^LID.LIDS = One
Line 11906: Name (LIDS, Zero)
Line 11909: Return (LIDS) /* \_SB_.LID_.LIDS */
The value is only set by Q14 (marked by * above):
Method (Q14, 0, NotSerialized)
{
P8XH (One, 0xBB)
P8XH (Zero, 0x14)
^^LID.LIDS = One
Notify (LID, 0x80) // Status Change
P8XH (One, 0xBB)
P8XH (Zero, 0xA4)
}
If QR_EC(0x14) cannot arrive to the OSPMs as early as possible, then the default LIDS=0 value may cause problem.
We need EC debug log to track if QR_EC(0x14) can arrive earlier.
You can uncomment the following line from drivers/acpi/ec.c and rebuild the kernel:
/* #define DEBUG */
Send the dmesg output (before suspending) to us.
Thanks and best regards
-Lv
> -----Original Message-----
> From: Bastien Nocera [mailto:[email protected]]
> Sent: Sunday, July 19, 2015 8:43 AM
> To: Rafael J. Wysocki; Len Brown; [email protected]; [email protected]
> Cc: [email protected]
> Subject: Ghost Lid switch on Baytrail tablet
>
> Hey,
>
> This tablet:
> http://www.amazon.com/WinBook-10-1-Inch-Windows-full-size-Display/dp/B00N9ZG5U2/
> doesn't have a physical lid switch unless you plug the keyboard accessory to it.
>
> But it thinks that there is a lid, and that it's closed, making logind
> suspend the machine after about 30 seconds.
>
> I'm currently testing this on a 4.0 kernel, as there have been
> regressions on Baytrail with 4.1 and 4.2rcs.
>
> The DSDT for that tablet:
> https://people.gnome.org/~hadess/Winbook%20TW100%20DSDT.dsl
>
> Any ideas how to handle this sort of device?
>
> Cheers
????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay? ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?
Hi,
If the issue is already identified and confirmed:
For example, you've confirmed the QR_EC(0x14) can only arrive when the keyboard accessory is plugged in.
Then please ignore my previous reply.
I don't have idea about handling a LID that always returns "closed" when the keyboard accessory is not plugged in.
Thanks
-Lv
> From: Zheng, Lv
> Sent: Tuesday, July 21, 2015 8:23 AM
>
> Hi,
>
> The _LID returns LIDS:
> Device (LID)
> {
> Name (_HID, EisaId ("PNP0C0D") /* Lid Device */) // _HID: Hardware ID
> Name (LIDS, Zero)
> Method (_LID, 0, NotSerialized) // _LID: Lid Status
> {
> Return (LIDS) /* \_SB_.LID_.LIDS */
> }
> }
> All LIDS related code can be found:
> Line 132: LIDS, 8,
> Line 5400: PARM |= (LIDS << 0x10)
> Line 5566: PARM = (LIDS << 0x08)
> Line 11792: ^^LID.LIDS = Zero
> * Line 11802: ^^LID.LIDS = One
> Line 11906: Name (LIDS, Zero)
> Line 11909: Return (LIDS) /* \_SB_.LID_.LIDS */
> The value is only set by Q14 (marked by * above):
> Method (Q14, 0, NotSerialized)
> {
> P8XH (One, 0xBB)
> P8XH (Zero, 0x14)
> ^^LID.LIDS = One
> Notify (LID, 0x80) // Status Change
> P8XH (One, 0xBB)
> P8XH (Zero, 0xA4)
> }
> If QR_EC(0x14) cannot arrive to the OSPMs as early as possible, then the default LIDS=0 value may cause problem.
> We need EC debug log to track if QR_EC(0x14) can arrive earlier.
>
> You can uncomment the following line from drivers/acpi/ec.c and rebuild the kernel:
> /* #define DEBUG */
>
> Send the dmesg output (before suspending) to us.
>
> Thanks and best regards
> -Lv
>
> > -----Original Message-----
> > From: Bastien Nocera [mailto:[email protected]]
> > Sent: Sunday, July 19, 2015 8:43 AM
> > To: Rafael J. Wysocki; Len Brown; [email protected]; [email protected]
> > Cc: [email protected]
> > Subject: Ghost Lid switch on Baytrail tablet
> >
> > Hey,
> >
> > This tablet:
> > http://www.amazon.com/WinBook-10-1-Inch-Windows-full-size-Display/dp/B00N9ZG5U2/
> > doesn't have a physical lid switch unless you plug the keyboard accessory to it.
> >
> > But it thinks that there is a lid, and that it's closed, making logind
> > suspend the machine after about 30 seconds.
> >
> > I'm currently testing this on a 4.0 kernel, as there have been
> > regressions on Baytrail with 4.1 and 4.2rcs.
> >
> > The DSDT for that tablet:
> > https://people.gnome.org/~hadess/Winbook%20TW100%20DSDT.dsl
> >
> > Any ideas how to handle this sort of device?
> >
> > Cheers
????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay? ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?
On 07/21/2015 09:30 AM, Zheng, Lv wrote:
> Hi,
>
> If the issue is already identified and confirmed:
> For example, you've confirmed the QR_EC(0x14) can only arrive when the keyboard accessory is plugged in.
> Then please ignore my previous reply.
> I don't have idea about handling a LID that always returns "closed" when the keyboard accessory is not plugged in.
Perhaps the LID status should be ignored when the device is in tablet
mode?
In the meantime, I took a look at two tablets here: ASUS T100 and Onda
V975W, both are baytrail-T tablet while the T100 has a keyboard dock.
For T100, its _LID return the value of GPO2.LIDZ, which has an initial
value of 1: "Name(LIDZ, One)" and on LID events, LIDZ will be assigned
proper value; and for Onda V975W, it doesn't define the LID acpi device.
So these two devices don't have this problem.
-Aaron
>
> Thanks
> -Lv
>
>> From: Zheng, Lv
>> Sent: Tuesday, July 21, 2015 8:23 AM
>>
>> Hi,
>>
>> The _LID returns LIDS:
>> Device (LID)
>> {
>> Name (_HID, EisaId ("PNP0C0D") /* Lid Device */) // _HID: Hardware ID
>> Name (LIDS, Zero)
>> Method (_LID, 0, NotSerialized) // _LID: Lid Status
>> {
>> Return (LIDS) /* \_SB_.LID_.LIDS */
>> }
>> }
>> All LIDS related code can be found:
>> Line 132: LIDS, 8,
>> Line 5400: PARM |= (LIDS << 0x10)
>> Line 5566: PARM = (LIDS << 0x08)
>> Line 11792: ^^LID.LIDS = Zero
>> * Line 11802: ^^LID.LIDS = One
>> Line 11906: Name (LIDS, Zero)
>> Line 11909: Return (LIDS) /* \_SB_.LID_.LIDS */
>> The value is only set by Q14 (marked by * above):
>> Method (Q14, 0, NotSerialized)
>> {
>> P8XH (One, 0xBB)
>> P8XH (Zero, 0x14)
>> ^^LID.LIDS = One
>> Notify (LID, 0x80) // Status Change
>> P8XH (One, 0xBB)
>> P8XH (Zero, 0xA4)
>> }
>> If QR_EC(0x14) cannot arrive to the OSPMs as early as possible, then the default LIDS=0 value may cause problem.
>> We need EC debug log to track if QR_EC(0x14) can arrive earlier.
>>
>> You can uncomment the following line from drivers/acpi/ec.c and rebuild the kernel:
>> /* #define DEBUG */
>>
>> Send the dmesg output (before suspending) to us.
>>
>> Thanks and best regards
>> -Lv
>>
>>> -----Original Message-----
>>> From: Bastien Nocera [mailto:[email protected]]
>>> Sent: Sunday, July 19, 2015 8:43 AM
>>> To: Rafael J. Wysocki; Len Brown; [email protected]; [email protected]
>>> Cc: [email protected]
>>> Subject: Ghost Lid switch on Baytrail tablet
>>>
>>> Hey,
>>>
>>> This tablet:
>>> http://www.amazon.com/WinBook-10-1-Inch-Windows-full-size-Display/dp/B00N9ZG5U2/
>>> doesn't have a physical lid switch unless you plug the keyboard accessory to it.
>>>
>>> But it thinks that there is a lid, and that it's closed, making logind
>>> suspend the machine after about 30 seconds.
>>>
>>> I'm currently testing this on a 4.0 kernel, as there have been
>>> regressions on Baytrail with 4.1 and 4.2rcs.
>>>
>>> The DSDT for that tablet:
>>> https://people.gnome.org/~hadess/Winbook%20TW100%20DSDT.dsl
>>>
>>> Any ideas how to handle this sort of device?
>>>
>>> Cheers
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