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Rick Kerkhof

2016-Oct-27 09:15 UTC

[Nouveau] Acer Aspire V7-582PG (Haswell, GTX 750M) fails to power off GPU via Power Resources

I can confirm what Peter said, path contains \_SB_.PCI0.RP05 and
power_state contains D3hot.

Op do 27 okt. 2016 11:06 schreef Peter Wu <peter at lekensteyn.nl>:
> On Thu, Oct 27, 2016 at 11:17:48AM +0300, Mika Westerberg wrote:
> > On Thu, Oct 27, 2016 at 12:56:41AM +0200, Peter Wu wrote:
> > > Hi PCI/ACPI PM experts,
> > >
> > > Since Linux 4.8, nouveau switched to rely on the PCIe port driver
to
> > > transition to D3cold. This however does not happen for an Acer
Aspire
> > > V7-582PG (Haswell, NVIDIA GTX 750M) from Rick.
> > >
> > > Any idea why? acpidump, lspci, dmesg and other details can be
found in
> > > the linked bug below.
> >
> > >
> > > Kind regards,
> > > Peter
> > >
> > > On Wed, Oct 26, 2016 at 10:42:07PM +0000,
> bugzilla-daemon at freedesktop.org wrote:
> > > > https://bugs.freedesktop.org/show_bug.cgi?id=98398
> > > >
> > > > --- Comment #11 from Peter Wu <peter at lekensteyn.nl>
---
> > > > So 4.7 and before used the "DSM" method on
runtime-suspend:
> > > > - \_SB.PCI0.RP05.PEGP._DSM would be invoked to enable
Optimus
> > > > - \_SB.PCI0.RP05.PEGP._PS3 is then invoked which would enter
D3cold
> > > > (note, this method is still used in 4.8 on older laptops or
with the
> > > > pcie_pm_port=off kernel option)
> > > >
> > > > Since 4.8, _DSM is not called anymore by nouveau (when
support from
> the PCI
> > > > core is detected) and this sequence should instead happen:
> > > > - \_SB.PCI0.RP05.PEGP._PS3 (does nothing besides updating
_STA)
> > > > - PCIe core removes power for the PCIe port since all its
children
> are in
> > > >   D3 and are willing to transition to D3cold. It does so by
invoking
> > > >   \NVP3._OFF (where \NVP3 is the power resource from
> \_SB.PCI0.RP05._PR3)
> > > >
> > > > That is how I think it should work in theory, but on Ricks
laptop
> running
> > > > 4.8.4,
> > > > /sys/bus/devices/0000:1c.4/firmware_node/ does not have
> power_resources_D0
> > > > devices (which I do have on my own laptop for 0000:01:0).
> > > >
> > > > The SSDT1 of Rick's Acer laptop shows this structure:
> > > >
> > > >     If (\_OSI ("Windows 2013"))
> > > >     {
> > > >         Scope (\_SB.PCI0.RP05)
> > > >         {
> > > >         //...
> > > >             Name (_PR0, Package (0x01)  // _PR0: Power
Resources for
> D0
> > > >             {
> > > >                 NVP3
> > > >             })
> > > >             Name (_PR2, Package (0x01)  // _PR2: Power
Resources for
> D2
> > > >             {
> > > >                 NVP2
> > > >             })
> > > >             Name (_PR3, Package (0x01)  // _PR3: Power
Resources for
> D3hot
> > > >             {
> > > >                 NVP3
> > > >             })
> > > >             // ...
> > > >             Method (_PS0, 0, NotSerialized)  // _PS0: Power
State 0
> > > >             {
> > > >             }
> > > >
> > > >             Method (_PS3, 0, NotSerialized)  // _PS3: Power
State 3
> > > >             {
> > > >             }
> > > >         }
> > > >
> > > >         Name (MSD3, Zero)
> > > >         PowerResource (NVP3, 0x00, 0x0000)
> > > >         {
> > > >             Name (_STA, One)  // _STA: Status
> > > >             // ...
> > > >
> > > >             Method (_ON, 0, NotSerialized)  // _ON_: Power
On
> > > >             {
> > > >                 // ...
> > > >             }
> > > >
> > > >             Method (_OFF, 0, NotSerialized)  // _OFF: Power
Off
> > > >             {
> > > >                 // ...
> > > >             }
> > > >         }
> > > >
> > > > The dmesg does show "ACPI: Power Resource [NVP3]
(on)", so I guess
> that the
> > > > methods are found. It is a mystery to me why the
> "power_resources_Dx" files are
> > > > not created, possibly breaking PM.
> >
> > The ASL code looks right to me (except for the NVP2 which never set
_STA
> > to 0 but should not affect here).
> >
> > I wonder what does
/sys/bus/pci/devices/0000:00:1c.4/firmware_node/path
> contain?
>
> The value is as expected, \_SB.PCI0.RP05:
>
> /sys/bus/pci/devices/0000:00:1c.4/firmware_node/path:\_SB_.PCI0.RP05
> /sys/bus/pci/devices/0000:00:1c.4/firmware_node/power_state:D3hot
> --
> Kind regards,
> Peter Wu
> https://lekensteyn.nl
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Mika Westerberg

2016-Oct-27 09:30 UTC

head link

[Nouveau] Acer Aspire V7-582PG (Haswell, GTX 750M) fails to power off GPU via Power Resources

On Thu, Oct 27, 2016 at 09:15:19AM +0000, Rick Kerkhof
wrote:>    I can confirm what Peter said, path contains \_SB_.PCI0.RP05 and
>    power_state contains D3hot.
And there are no power_resources_Dx directories under
/sys/bus/pci/devices/0000:00:1c.4/firmware_node?

Peter Wu

2016-Oct-27 09:35 UTC

head link

[Nouveau] Acer Aspire V7-582PG (Haswell, GTX 750M) fails to power off GPU via Power Resources

On Thu, Oct 27, 2016 at 12:30:11PM +0300, Mika Westerberg
wrote:> On Thu, Oct 27, 2016 at 09:15:19AM +0000, Rick Kerkhof wrote:
> >    I can confirm what Peter said, path contains \_SB_.PCI0.RP05 and
> >    power_state contains D3hot.
> 
> And there are no power_resources_Dx directories under
> /sys/bus/pci/devices/0000:00:1c.4/firmware_node?
Correct, this is what Rick sent me yesterday for
ls -lR /sys/bus/pci/devices/0000:00:1c.4/firmware_node/

    .:
    totaal 0
    -r--r--r--  1 root root 4096 26 okt 22:10 adr
    drwxr-xr-x  3 root root    0 26 okt 22:12 device:32
    drwxr-xr-x 12 root root    0 26 okt 22:12 LNXVIDEO:00
    -r--r--r--  1 root root 4096 26 okt 22:10 path
    lrwxrwxrwx  1 root root    0 26 okt 22:10 physical_node ->
../../../../pci0000:00/0000:00:1c.4
    drwxr-xr-x  2 root root    0 26 okt 22:12 power
    -r--r--r--  1 root root 4096 26 okt 22:10 power_state
    lrwxrwxrwx  1 root root    0 26 okt 22:10 subsystem ->
../../../../../bus/acpi
    -rw-r--r--  1 root root 4096 26 okt 22:10 uevent

    ./device:32:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:12 adr
    -r--r--r-- 1 root root 4096 26 okt 22:12 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:12 uevent

    ./device:32/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:12 async
    -rw-r--r-- 1 root root 4096 26 okt 22:12 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:12 control
    -r--r--r-- 1 root root 4096 26 okt 22:12 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:12 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:12 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:12 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:12 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:12 runtime_usage

    ./LNXVIDEO:00:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    drwxr-xr-x 3 root root    0 26 okt 22:31 device:33
    drwxr-xr-x 3 root root    0 26 okt 22:31 device:34
    drwxr-xr-x 3 root root    0 26 okt 22:31 device:35
    drwxr-xr-x 3 root root    0 26 okt 22:31 device:36
    drwxr-xr-x 3 root root    0 26 okt 22:31 device:37
    drwxr-xr-x 3 root root    0 26 okt 22:31 device:38
    drwxr-xr-x 3 root root    0 26 okt 22:31 device:39
    drwxr-xr-x 3 root root    0 26 okt 22:31 device:3a
    lrwxrwxrwx 1 root root    0 26 okt 22:10 driver ->
../../../../../../bus/acpi/drivers/video
    -r--r--r-- 1 root root 4096 26 okt 22:31 hid
    drwxr-xr-x 3 root root    0 26 okt 22:31 input
    -r--r--r-- 1 root root 4096 26 okt 22:31 modalias
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    lrwxrwxrwx 1 root root    0 26 okt 22:31 physical_node ->
../../../../../pci0000:00/0000:00:1c.4/0000:01:00.0
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    -r--r--r-- 1 root root 4096 26 okt 22:31 power_state
    -r--r--r-- 1 root root 4096 26 okt 22:31 status
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:33:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:33/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/device:34:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:34/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/device:35:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:35/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/device:36:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:36/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/device:37:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:37/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/device:38:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:38/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/device:39:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:39/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/device:3a:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 adr
    -r--r--r-- 1 root root 4096 26 okt 22:31 path
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../bus/acpi
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/device:3a/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/input:
    totaal 0
    drwxr-xr-x 6 root root 0 26 okt 22:31 input4

    ./LNXVIDEO:00/input/input4:
    totaal 0
    drwxr-xr-x 2 root root    0 26 okt 22:31 capabilities
    lrwxrwxrwx 1 root root    0 26 okt 22:31 device -> ../../../LNXVIDEO:00
    drwxr-xr-x 3 root root    0 26 okt 22:31 event4
    drwxr-xr-x 2 root root    0 26 okt 22:31 id
    -r--r--r-- 1 root root 4096 26 okt 22:31 modalias
    -r--r--r-- 1 root root 4096 26 okt 22:31 name
    -r--r--r-- 1 root root 4096 26 okt 22:31 phys
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    -r--r--r-- 1 root root 4096 26 okt 22:31 properties
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../../class/input
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent
    -r--r--r-- 1 root root 4096 26 okt 22:31 uniq

    ./LNXVIDEO:00/input/input4/capabilities:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 abs
    -r--r--r-- 1 root root 4096 26 okt 22:31 ev
    -r--r--r-- 1 root root 4096 26 okt 22:31 ff
    -r--r--r-- 1 root root 4096 26 okt 22:31 key
    -r--r--r-- 1 root root 4096 26 okt 22:31 led
    -r--r--r-- 1 root root 4096 26 okt 22:31 msc
    -r--r--r-- 1 root root 4096 26 okt 22:31 rel
    -r--r--r-- 1 root root 4096 26 okt 22:31 snd
    -r--r--r-- 1 root root 4096 26 okt 22:31 sw

    ./LNXVIDEO:00/input/input4/event4:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 dev
    lrwxrwxrwx 1 root root    0 26 okt 22:31 device -> ../../input4
    drwxr-xr-x 2 root root    0 26 okt 22:31 power
    lrwxrwxrwx 1 root root    0 26 okt 22:10 subsystem ->
../../../../../../../../../class/input
    -rw-r--r-- 1 root root 4096 26 okt 22:31 uevent

    ./LNXVIDEO:00/input/input4/event4/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/input/input4/id:
    totaal 0
    -r--r--r-- 1 root root 4096 26 okt 22:31 bustype
    -r--r--r-- 1 root root 4096 26 okt 22:31 product
    -r--r--r-- 1 root root 4096 26 okt 22:31 vendor
    -r--r--r-- 1 root root 4096 26 okt 22:31 version

    ./LNXVIDEO:00/input/input4/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./LNXVIDEO:00/power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:31 async
    -rw-r--r-- 1 root root 4096 26 okt 22:31 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:31 control
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:31 runtime_usage

    ./power:
    totaal 0
    -rw-r--r-- 1 root root 4096 26 okt 22:11 async
    -rw-r--r-- 1 root root 4096 26 okt 22:11 autosuspend_delay_ms
    -rw-r--r-- 1 root root 4096 26 okt 22:11 control
    -r--r--r-- 1 root root 4096 26 okt 22:11 runtime_active_kids
    -r--r--r-- 1 root root 4096 26 okt 22:11 runtime_active_time
    -r--r--r-- 1 root root 4096 26 okt 22:11 runtime_enabled
    -r--r--r-- 1 root root 4096 26 okt 22:11 runtime_status
    -r--r--r-- 1 root root 4096 26 okt 22:11 runtime_suspended_time
    -r--r--r-- 1 root root 4096 26 okt 22:11 runtime_usage
-- 
Kind regards,
Peter Wu
https://lekensteyn.nl

Rick Kerkhof

2016-Oct-27 09:42 UTC

head link

[Nouveau] Acer Aspire V7-582PG (Haswell, GTX 750M) fails to power off GPU via Power Resources

No, there are not. Here is the recursive directory listing:
http://sprunge.us/FIRE

Op do 27 okt. 2016 11:30 schreef Mika Westerberg <
mika.westerberg at linux.intel.com>:
> On Thu, Oct 27, 2016 at 09:15:19AM +0000, Rick Kerkhof wrote:
> >    I can confirm what Peter said, path contains \_SB_.PCI0.RP05 and
> >    power_state contains D3hot.
>
> And there are no power_resources_Dx directories under
> /sys/bus/pci/devices/0000:00:1c.4/firmware_node?
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