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After fresh system installation on 10th April the sound has worked fine for a while. Since a few weeks I have no sound any more via DisplayPort (HDMI). I assume that an update raises up the problem. But I'm not sure which one, since I use the sound only sporadically.
The analog outputs front and rear are working fine but nor of digital outputs, two DisplayPorts and one HDMI.
Here is what I found:
togo@idefix:~$ sudo dmesg | grep snd
[ 2.499442] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002)
[ 2.534347] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 2.619670] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC623: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:line
[ 2.619673] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 2.619674] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[ 2.619676] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
[ 2.619676] snd_hda_codec_realtek hdaudioC0D0: inputs:
[ 2.619677] snd_hda_codec_realtek hdaudioC0D0: Mic=0x19
[ 2.619678] snd_hda_codec_realtek hdaudioC0D0: Mic=0x18
[ 2.706503] snd_hda_codec_hdmi hdaudioC0D2: Monitor plugged-in, Failed to power up codec ret=[-13]The last message appears since the beginning.
togo@idefix:~$ pacmd list-sinks
1 sink(s) available.
* index: 2
name: <alsa_output.pci-0000_00_1f.3.hdmi-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 9030
volume: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
balance 0,00
base volume: 65536 / 100% / 0,00 dB
volume steps: 65537
muted: no
current latency: 0,00 ms
max request: 0 KiB
max rewind: 0 KiB
monitor source: 2
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 0,00 ms; range is 0,50 .. 2000,00 ms
card: 0 <alsa_card.pci-0000_00_1f.3>
module: 6
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "HDMI 0"
alsa.id = "HDMI 0"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "3"
alsa.card = "0"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xb1238000 irq 141"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1f.3"
sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "06c8"
device.product.name = "Comet Lake PCH cAVS"
device.form_factor = "internal"
device.string = "hdmi:0"
device.buffering.buffer_size = "352800"
device.buffering.fragment_size = "176400"
device.access_mode = "mmap+timer"
device.profile.name = "hdmi-stereo"
device.profile.description = "Digital Stereo (HDMI)"
device.description = "Internes Audio Digital Stereo (HDMI)"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: yes)
properties:
device.icon_name = "video-display"
device.product.name = "PHL 279P1"
active port: <hdmi-output-0>togo@idefix:~$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
samplerate
Rate Converter Plugin Using Samplerate Library
speexrate
Rate Converter Plugin Using Speex Resampler
jack
JACK Audio Connection Kit
oss
Open Sound System
pulse
PulseAudio Sound Server
speex
Plugin using Speex DSP (resample, agc, denoise, echo, dereverb)
upmix
Plugin for channel upmix (4,6,8)
vdownmix
Plugin for channel downmix (stereo) with a simple spacialization
default
Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=PCH
HDA Intel PCH, ALC623 Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, ALC623 Analog
Front output / input
surround21:CARD=PCH,DEV=0
HDA Intel PCH, ALC623 Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, ALC623 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, ALC623 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, ALC623 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, ALC623 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, ALC623 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=PCH,DEV=0
HDA Intel PCH, HDMI 0
HDMI Audio Output
hdmi:CARD=PCH,DEV=1
HDA Intel PCH, HDMI 1
HDMI Audio Output
hdmi:CARD=PCH,DEV=2
HDA Intel PCH, HDMI 2
HDMI Audio Output
hdmi:CARD=PCH,DEV=3
HDA Intel PCH, HDMI 3
HDMI Audio Output
hdmi:CARD=PCH,DEV=4
HDA Intel PCH, HDMI 4
HDMI Audio Output
usbstream:CARD=PCH
HDA Intel PCH
USB Stream OutputA test with default device produce no sound but with the specified device, I got an error. The same test with headphones connected and default device works as expected.
togo@idefix:~$ speaker-test --channels 2 --nloops 1
speaker-test 1.2.4
Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 96 to 1048576
Period size range from 32 to 349526
Using max buffer size 1048576
Periods = 4
was set period_size = 262144
was set buffer_size = 1048576
0 - Front Left
1 - Front Right
Time per period = 10.944091
togo@idefix:~$ speaker-test --channels 2 --nloops 1 -Dhdmi:0
speaker-test 1.2.4
Playback device is hdmi:0
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 8544000
Period size range from 32 to 4272000
Using max buffer size 8544000
Periods = 4
Unable to set hw params for playback: Cannot allocate memory
Setting of hwparams failed: Cannot allocate memoryI have no idea any more. I hope someone has a hint for me.
Regards Torsten
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