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Don't let the digital audio (HDMI/DP) of your AMDGPU go away
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RayOfLight
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Joined: 27 Aug 2013
Posts: 69
Location: Catalunya

PostPosted: Sat Jun 09, 2018 6:24 am    Post subject: Don't let the digital audio (HDMI/DP) of your AMDGPU go away Reply with quote

I recently upgraded from 4.16.7 to 4.17.0 and lo and behold I lost audio on my 290X HDMI output.

The culprit was:

Code:

AMD DC - Enable new display engine
  │ CONFIG_DRM_AMD_DC:
  │
  │ Choose this option if you want to use the new display engine support for AMDGPU. This adds required support for Vega and Raven ASICs.

DC support for Polaris and older ASICs
  │ CONFIG_DRM_AMD_DC_PRE_VEGA:
  │
  │ Choose this option to enable the new DC support for older asics by default. This includes Polaris, Carrizo, Tonga, Bonaire, and Hawaii.


I had enabled those options while upgrading, disabling them solved this issue. Support for older asics my ass :)
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