Sound over DisplayPort with Radeon R9 380 and amdgpu does not work. The device is listed by lspci, the driver "snd_hda_intel" is loaded and the card is detected by ALSA. ALSA lists six possible devices but none of them works. No matter what device configuration I select in PulseAudio/Phonon (HDMI 0 through HDMI 5) my monitor stays silent. If I try to by-bass PulseAudio and directly try to play an audio file with aplay I get the same negative result. # lspci -v -s 01:00.1 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device aad8 Subsystem: Tul Corporation / PowerColor Device aad8 Flags: bus master, fast devsel, latency 0, IRQ 43 Memory at f7e60000 (64-bit, non-prefetchable) [size=16K] Capabilities: [48] Vendor Specific Information: Len=08 <?> Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Capabilities: [150] Advanced Error Reporting Capabilities: [328] Alternative Routing-ID Interpretation (ARI) Kernel driver in use: snd_hda_intel # aplay -L null Discard all samples (playback) or generate zero samples (capture) pulse PulseAudio Sound Server default Default Audio Device sysdefault:CARD=PCH HDA Intel PCH, ALC892 Analog Default Audio Device front:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog Front speakers surround21:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 2.1 Surround output to Front and Subwoofer speakers surround40:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Digital IEC958 (S/PDIF) Digital Audio Output hdmi:CARD=HDMI,DEV=0 HDA ATI HDMI, HDMI 0 HDMI Audio Output hdmi:CARD=HDMI,DEV=1 HDA ATI HDMI, HDMI 1 HDMI Audio Output hdmi:CARD=HDMI,DEV=2 HDA ATI HDMI, HDMI 2 HDMI Audio Output hdmi:CARD=HDMI,DEV=3 HDA ATI HDMI, HDMI 3 HDMI Audio Output hdmi:CARD=HDMI,DEV=4 HDA ATI HDMI, HDMI 4 HDMI Audio Output hdmi:CARD=HDMI,DEV=5 HDA ATI HDMI, HDMI 5 HDMI Audio Output However, none of # aplay -D hdmi:CARD=HDMI,DEV=0 -fS32_LE -r 48000 -c 2 "test.mp3" ... # aplay -D hdmi:CARD=HDMI,DEV=5 -fS32_LE -r 48000 -c 2 "test.mp3" works.
Audio is only supported on amdgpu with DAL: https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-4.7
Excuse my dumb question, what does "DAL" mean? And more importantly how do I get it? I use a self-compiled kernel 4.8.9 and I did not find any configuration option that looked like DAL.
(In reply to Matthias Nagel from comment #2) > Excuse my dumb question, what does "DAL" mean? And more importantly how do I > get it? I use a self-compiled kernel 4.8.9 and I did not find any > configuration option that looked like DAL. It's the new modesetting infrastructure for amdgpu. It's not upstream yet, so you'd need to use that branch until it is.
OK, thanks. In this case I prefer to stay with the kernel provided by my distro. Now, I know that it is not a bug but just a missing feature that is hopefully coming soon and I am willing to wait. I found some reports around that claimed that audio should be working with amdgpu since kernel 4.6 and so I thought I was missing something.
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