Created attachment 135504 [details] avivotool regs hdmi in the running system I am running Debian Stretch (kernel 4.9.18) with ati driver 1:7.8.0-1, on an GA-970A-DS3P board that has a Radeon RX 460 off-board. Further specs: processor: AMD FX(tm)-8300 Eight-Core Processor chipset: AMD 970 Attached to the board is my Monitor, via HDMI. Vanilla install works fine, except: no audio via HDMI. pavucontrol shows me that the HDMI output is recognized correctly[1] but when I plug anything to it I get no output (on windows I get audio with catalyst driver). The analog audio output (front of the case output) works as expected. Curiously pavucontrol reports "HDMI / DisplayPort (plugged in)" even when there's nothing connected to the HDMI audio output. Because this bug is based on another with a "Radeon HD 6310"[2] I have figured that it could be useful to attach the output of "avivotool regs hdmi". Any clue as to what to try next? [1] https://u.teknik.io/VUsQe.png [2] https://bugs.freedesktop.org/show_bug.cgi?id=67767
The current upstream amdgpu driver does not support hdmi audio. You need to use one of these branches until the code gets upstream (targeting 4.15): https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next https://cgit.freedesktop.org/~airlied/linux/log/?h=drm-next-amd-dc-staging
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