No audio

[ori0n]

Hi all, no audio is coming out from my speakers. It used to work, but today don't.

inxi -F                                                                                                         
System:    Host: ori0n-linux Kernel: 4.15.0-23-generic x86_64 bits: 64 Desktop: KDE Plasma 5.12.6
      Distro: Ubuntu 18.04 LTS
Machine:   Device: laptop System: Alienware product: Alienware 15 R2 v: 1.4.4 serial: N/A
      Mobo: Alienware model: 0X70NC v: A00 serial: N/A UEFI: Alienware v: 1.4.4 date: 01/08/2018
Battery    BAT1: charge: 32.5 Wh 100.0% condition: 32.5/96.0 Wh (34%)
CPU:       Quad core Intel Core i7-6820HK (-MT-MCP-) cache: 8192 KB
      clock speeds: max: 3600 MHz 1: 1425 MHz 2: 3160 MHz 3: 2605 MHz 4: 3222 MHz 5: 3015 MHz 6: 2918 MHz
      7: 2988 MHz 8: 3008 MHz
Graphics:  Card-1: Intel HD Graphics 530
      Card-2: NVIDIA GM204M [GeForce GTX 980M]
      Display Server: x11 (X.Org 1.19.6 ) drivers: modesetting,nvidia (unloaded: fbdev,vesa,nouveau)
      Resolution: 1360x768@60.37hz, 1920x1080@60.01hz
      OpenGL: renderer: GeForce GTX 980M/PCIe/SSE2 version: 4.6.0 NVIDIA 390.48
Audio:     Card Intel Sunrise Point-H HD Audio driver: snd_hda_intel Sound: ALSA v: k4.15.0-23-generic
Network:   Card-1: Qualcomm Atheros Killer E2400 Gigabit Ethernet Controller driver: alx
      IF: enp59s0 state: down mac: 84:7b:eb:2d:62:30
      Card-2: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter driver: ath10k_pci
      IF: wlp60s0 state: up mac: 9c:b6:d0:0d:80:a3
      Card-3: Atheros
      IF: null-if-id state: N/A speed: N/A duplex: N/A mac: N/A
Drives:    HDD Total Size: 1128.2GB (2.0% used)
      ID-1: /dev/sda model: TOSHIBA_THNSNK12 size: 128.0GB
      ID-2: /dev/sdb model: ST1000LM044_HN size: 1000.2GB
Partition: ID-1: / size: 144G used: 21G (16%) fs: ext4 dev: /dev/sdb3
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 59.5C mobo: N/A gpu: 52C
      Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 243 Uptime: 1:52 Memory: 4097.3/32034.2MB Client: Shell (zsh) inxi: 2.3.56

 $lspci | grep -i audio                                                          
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)

I can't unmute in options:


In alsamixer everything is non-muted:

[JoHubb]

Me too. Right and Left Speaker tests work but not web audio, or local files (flac, etc). I have output but no sound.

howard@Snow-White:~$ inxi -F
System: Host: Snow-White Kernel: 4.15.0-23-generic x86_64 bits: 64 Desktop: KDE Plasma 5.12.6
Distro: Ubuntu 18.04 LTS
Machine: Device: desktop Mobo: ASUSTeK model: Z170-E v: Rev 1.xx serial: N/A
UEFI: American Megatrends v: 3301 date: 01/13/2017
Battery hidpp__0: charge: N/A condition: NA/NA Wh
hidpp__1: charge: 100% condition: NA/NA Wh
CPU: Quad core Intel Core i5-6600K (-MCP-) cache: 6144 KB
clock speeds: max: 3900 MHz 1: 1765 MHz 2: 3350 MHz 3: 3020 MHz 4: 3416 MHz
Graphics: Card: Advanced Micro Devices [AMD/ATI] Baffin [Radeon RX 460]
Display Server: x11 (X.Org 1.19.6 )
drivers: ati,amdgpu (unloaded: modesetting,fbdev,vesa,radeon)
Resolution: 1920x1200@59.95hz
OpenGL: renderer: AMD Radeon RX 460 Graphics (POLARIS11 / DRM 3.23.0 / 4.15.0-23-generic, LLVM 6.0.0)
version: 4.5 Mesa 18.0.5
Audio: Card-1 C-Media CMI8788 [Oxygen HD Audio] driver: snd_virtuoso
Card-2 Advanced Micro Devices [AMD/ATI] Device aae0 driver: snd_hda_intel
Card-3 Intel Sunrise Point-H HD Audio driver: snd_hda_intel
Card-4 Apple driver: USB Audio
Sound: Advanced Linux Sound Architecture v: k4.15.0-23-generic
Network: Card-1: Intel Ethernet Connection (2) I219-V driver: e1000e
IF: enp0s31f6 state: down mac: 38:d5:47:df:6e:5b
Card-2: Realtek RTL8111/8168/8411 PCIE Gigabit Ethernet Controller driver: r8169
IF: enp4s0 state: up speed: 100 Mbps duplex: full mac: 7c:8b:ca:01:bf:b8
Drives: HDD Total Size: 6251.3GB (0.3% used)
ID-1: /dev/sda model: WDC_WD10EZEX size: 1000.2GB
ID-2: /dev/sdb model: Samsung_SSD_750 size: 250.1GB
ID-3: /dev/sdc model: ST3000DM001 size: 3000.6GB
ID-4: /dev/sdd model: WDC_WD2003FZEX size: 2000.4GB
Partition: ID-1: / size: 384G used: 11G (3%) fs: ext4 dev: /dev/sdd5
ID-2: swap-1 size: 8.53GB used: 0.00GB (0%) fs: swap dev: /dev/sdd6
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 25.0C mobo: N/A gpu: 29.0
Fan Speeds (in rpm): cpu: 0
Info: Processes: 204 Uptime: 3:49 Memory: 1159.8/7915.3MB Client: Shell (bash) inxi: 2.3.56
howard@Snow-White:~$

howard@Snow-White:~$ lspci | grep -i audio
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device aae0
06:00.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 [Oxygen HD Audio]

I've tried Cantata, Amarok, VLC. The same machine plays audio on Rhythmbox on Mint.

I'd be grateful for advice.

[JoHubb]

Fixed.

Using loudspeaker icon on panel, left click to bring up Audio Volume/Devices. All the installed sound cards - built-in or otherwise - are shown. I clicked on the triple bars on the right for each and disabled any where Mute was on.

By trial and error, I found a combination which worked and marked it default. I had to switch the jack from one sound card output to another as part of the testing. I eventually found that the output labelled 'headphones' on the Audio Volume/Devices popup could drive a pair of external speakers using the speaker-out jack on the sound card. I got sound both when listening to web broadcasts, and also when listening to local files on a WDMyCloud storage device. Cantata did not find this device, but both VLC and mpv Player did and they run .flac files perfectly. I particularly like mpv player because the range of display options, and that you can mute/switch off with right click.

This setting also drove the sound on an Apple Cinema monitor via USB but that is another story!

Hope this helps someone. At least it shows that good quality sound playback is possible in KDE. Some posters questioned this in Kubuntu 17.?

The next project is to stream the output from the WDMyCloud disk to a Sonos sound system. I suspect Sonos is not available in a Linux version though.

EDIT: Today on booting, the default sound card had been changed - how?? To get sound output, I had to reset the 'headphone' labelled card as default (see above). I hope this doesn't become a daily habit with KDE...