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  • drm
  • amd
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  • #509

Closed
Open
Created Jun 29, 2014 by Bugzilla Migration User@bugzilla-migration

HDMI audio stops working when drm_kms_helper edid overwrite in place

Submitted by war..@..il.com

Assigned to Default DRI bug account

Link to original bug (#80691)

Description

Created attachment 101987
dmesg

When powering on a PC with radeon gpu (E350 in this case), without an output device powered on (on the hdmi out), X won't start.
Therefore using drm_kms_helper to overwrite the edid information and forcing the display to on is needed.

In this combination the hdmi audio output is not working.
It also is not working if the system is started with the overwrite in place and TV / AVR turned on.
It seems as if the audio codec is not enabled when EDID is loaded with drm_kms_helper

Expectation: Audio will continue to work when overwriting EDID with drm_kms_helper.

Attachment 101987, "dmesg":
file_80691.txt

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