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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - DP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103786#c14">Comment # 14</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - DP audio does not work with Thinkpad Ultra Dock and DP-to-HDMI converter"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103786">bug 103786</a>
from <span class="vcard"><a class="email" href="mailto:abhijeet.kumar@intel.com" title="Abhijeet Kumar <abhijeet.kumar@intel.com>"> <span class="fn">Abhijeet Kumar</span></a>
</span></b>
<pre>AUD_PWRST(0x4c) 0x0fffffff Audio Power State(Function Group, Convertor, Pin
Widget)
The corresponding pin and converter(audio widgets) are not in D0 thus "no
audio".
I can see the monitor has audio support and i915 has enabled the audio codec.
[8.489083] [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:101:DP-4],
[ENCODER:89:DP-MST A]
[8.489114] [drm:hsw_audio_codec_enable [i915]] Enable audio codec on pipe A, 44
bytes ELD
[14.735364] [drm:drm_detect_monitor_audio [drm]] Monitor has basic audio
support
But i'm seeing there's no active encoder for DP MST:
[23.695602] [drm:i915_audio_component_get_eld [i915]] Not valid for port B
[23.695617] [drm:i915_audio_component_get_eld [i915]] Not valid for port B
[23.695628] [drm:i915_audio_component_get_eld [i915]] Not valid for port B
[23.695648] [drm:i915_audio_component_get_eld [i915]] Not valid for port C
[23.695659] [drm:i915_audio_component_get_eld [i915]] Not valid for port C
[23.695669] [drm:i915_audio_component_get_eld [i915]] Not valid for port D
[23.695680] [drm:i915_audio_component_get_eld [i915]] Not valid for port D
[23.695692] [drm:i915_audio_component_get_eld [i915]] Not valid for port D</pre>
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