"Legacy Kernel Caller" preventing sleep

[BRCook]

Hi!

It seems something about Matrix is triggering "Legacy Kernel Caller" which prevents Windows 10 from sleeping. This is strange, as it only started recently. Reinstalling does not seem to help.

I have narrowed it down to Matrix -- or something related to Matrix -- as the entry in my powercfg report disappears when Matrix is shut down.

It is not related to the VAIOs, VASIO, or ASIO devices selected as disabling all of them but leaving Matrix running has no effect.

For the record I am running Matrix Coconut v2.0.0.7

[Vincent Burel]

this is pending on device and audio service in use. Windows usually does not enter in Sleep mode if an audio stream is running.

[BRCook]

There is no audio stream. Closing everything except Matrix does not solve the problem -- Matrix being open is keeping the device awake, and Matrix alone.