Other things tried so far, without success:
* Locking the sample rate to 44100 in PulseAudio.
* Manually calling Tegra and/or rt5640 supsend/resume code, even though the system is not preparing for real S3.
Other things tried so far, without success:
* Locking the sample rate to 44100 in PulseAudio.
* Manually calling Tegra and/or rt5640 supsend/resume code, even though the system is not preparing for real S3.