https://wmatrix.googleplex.com/unfiltered?suites=chameleon_audio_perbuild%2Cchameleon_hdmi_perbuild&&builds=R53-8377.0.0

auron_paine failures:
- display_HotPlugAtSuspend.extended - TEST CASE: PLUG > SUSPEND > PLUG > PLUG > RESUME - client failed to sleep after 20 seconds
- audio_AudioBasicInternalSpeaker - ['USB'] rather than internal speaker is selected on Cros device
- audio_InternalCardNodes - Wrong input node(s) plugged ['INTERNAL_MIC', 'USB', 'POST_DSP_LOOPBACK', 'POST_MIX_LOOPBACK'] instead ['POST_DSP_LOOPBACK', 'POST_MIX_LOOPBACK', 'INTERNAL_MIC']!

peppy failures:
- audio_AudioBasicInternalMicrophone - ['USB'] rather than internal mic is selected on Cros device
- audio_AudioBasicInternalSpeaker - ['USB'] rather than internal speaker is selected on Cros device
- audio_InternalCardNodes - Wrong input node(s) plugged ['INTERNAL_MIC', 'USB', 'POST_DSP_LOOPBACK', 'POST_MIX_LOOPBACK'] instead ['POST_DSP_LOOPBACK', 'POST_MIX_LOOPBACK', 'INTERNAL_MIC']!


Most of these failures show USB audio node present where it has nothing to do with the test scenario. Chameleon USB connection should be disconnected.
That reminds me of other issues where chameleon USB connection interfered with the state of DUT...

The "client failed to sleep after 20 seconds" failure for display_HotPlugAtSuspend test looks suspicious.

On next build the tests seem to pass for auron_paine - https://screenshot.googleplex.com/NTqQZU2CEVM
We'll keep an eye on these devices.