[wdmaudiodev] Re: Shutdown notification when recording from a service

  • From: Tom Eckert <teckert@xxxxxxxxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Fri, 13 Apr 2018 11:01:14 -0400

Good point.  In this case hibernate works like sleep; the active streams all get paused before the PowerChangeState() callback.
I should mention that our devices only support D3 and D0.
Regards,
Tom

On 4/13/2018 9:51 AM, HpW-Works Support wrote:

BTW: may also check a hybernate cycle, while this is a different behavior..

Best Regards

HpW-Works Support

Mailto:support@xxxxxxxxxxxxx
Website:http://www.hpw-works.com

Am 13. April 2018 14:45:39 schrieb Tom Eckert <teckert@xxxxxxxxxxxxxxxx>:

Here's the link: https://aka.ms/Varr10

Thanks,
Tom

On 4/12/2018 3:19 PM, Matthew van Eerde (Redacted sender Matthew.van.Eerde for DMARC) wrote:

From your description, it would seem you have found a bug in portcls; can you file a problem report in Feedback Hub and send me a link?

https://blogs.msdn.microsoft.com/matthew_van_eerde/2016/09/26/report-problems-with-logs-and-suggest-features-with-the-feedback-hub/

------------------------------------------------------------------------
*From:* wdmaudiodev-bounce@xxxxxxxxxxxxx <wdmaudiodev-bounce@xxxxxxxxxxxxx> on behalf of Tom Eckert <teckert@xxxxxxxxxxxxxxxx>
*Sent:* Thursday, April 12, 2018 11:56:39 AM
*To:* wdmaudiodev@xxxxxxxxxxxxx
*Subject:* [wdmaudiodev] Shutdown notification when recording from a service
We have a customer that uses a recording app that is implemented as a
service.  The problem is that they get BSOD on shutdown. From the logs I
can see that the streams are still running when our
IAdapterPowerManagement::PowerChangeState() gets called.

The documentation states that PortCls will pause any running streams
before calling PowerChangeState() so is it expected that this would not
be the case for a service?

I've asked the customer to modify their service code to handle
SERVICE_CONTROL_SHUTDOWN and stop recorders but I suspect I may need to
handle this case anyway.

Regards,

Tom



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