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

Mika Westerberg mika.westerberg at linux.intel.com
Thu Oct 27 09:55:08 UTC 2016

On Thu, Oct 27, 2016 at 09:42:28AM +0000, Rick Kerkhof wrote:
>    No, there are not. Here is the recursive directory listing:

Are you able to try the following patch and send me dmesg (or attach it
to that bug)? It should show if the ACPI core even tries to add those
power resources.

diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index fcd4ce6f78d5..af9c3e15dd74 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -444,6 +444,9 @@ void acpi_power_add_remove_device(struct acpi_device *adev, bool add)
 	if (!adev->power.flags.power_resources)
+	acpi_handle_info(adev->handle, "Adding power resources for %s\n",
+			 dev_name(&adev->dev));
 	for (state = ACPI_STATE_D0; state <= ACPI_STATE_D3_HOT; state++)

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