Re: drm_dp_dual_mode_detect *ERROR*

One err message more (after machdep.allowaperture=2):

drm:pid0:intel_dp_aux_wait_done *ERROR* [drm] *ERROR* AUX C/DDI C/PHY
C: did not complete or timeout within 10ms (status 0xa143003f)


>Hello,
>
>Testing a new monitor with speakers connection by a DisplayPort
>adapter
>to HDMI.. I came to realize the real problem related to these messages
>appearing at boot time and dmesg:
>
>drm:pid38311:drm_dp_dual_mode_detect *ERROR* [drm] *ERROR* Unexpected
>DP dual mode adaptor ID 20
>
>drm:pid26205:drm_dp_dual_mode_detect *ERROR*
>[drm] *ERROR* Unexpected DP dual mode adaptor ID 20
>
>..in few words the DP adapter that should pass audio and video
>channels
>together let pass the video flow only (and indeed I'm able to use my
>new screen) but without the audio channel (HDMI cable and connection
>tested).
>
>Hope this is helpful, thanks
>
>
>== Daniele Bonini