Hello,
I am currently running ach with the latest mainline kernel and the open source drivers. Everything works fine but it seems almost impossible to get HDMI audio working.
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: AUDIO [USB AUDIO], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 10: HDMI 4 [HDMI 4]
And the alsamixer gives me this info
Card: HDA ATI HDMI
Chip: ATI R6xx HDM
If I try playback wih aplay for all the HDMI devices I get no errors, but no audio either.
Pavucontrol (I use pulseaudio) shows the device as R9 285/380 tonga - with many HDMI profiles and I tried them all.
Nothing seems to work. Using the proprietary driver is no option since I would have to downgrade X.
Thx for any advice.