Hello, I have tried to get audio over HDMI working with two of the latest kernels, adding radeon.audio=1 in GRUB. Kernel 3.11.1 (as supplied on XBMC forum with several patches incl. HD audio related ones): No message of audio being enabled in dmesg. Kernel 3.12 RC3 reports back: [drm] Enabling audio 0 support [drm] Enabling audio 1 support [drm] Enabling audio 2 support [drm] Enabling audio 3 support [drm] Enabling audio 4 support [drm] Enabling audio 5 support The devices and cards are detected and listed with "aplay -L", unmuted every channel through alsamixer. I tried getting noise out hitting "aplay -D (plug)hw:0,3" but physical sound is not being produced. I already tried "xrandr --output HDMI-0 --set audio auto" (or "on", "1", etc) As a reference, everything is working with the Catalyst drivers, so it's not a hardware flaw. Uncensored dmesg logs: http://paste.ubuntu.com/6196722/ http://paste.ubuntu.com/6197292/ Please help! Let me know if you need more information from me to get to the bottom of this. P.S. I am having this issue together with screen artifacts in XBMC, for which I will file another bug.
"FIXED", with the understanding that I tricked the X server with the xrandr command, then kill and restart an X session: X & xrandr -d :0 --output HDMI-0 --set audio auto kill $(pidof X) xinit xbmc-standalone ... Though, it would be great if audio would automatically work without the need of the xrandr command. APU/CPU: Radeon HD7480 (A4-5300)
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