Audio doesn't work on some programs after boot (sometimes)

Check new message dated 30.06.2014
Hi,
I'm having a weird problem. After booting my computer, the audio sometimes works perfectly, sometimes not at all, and sometimes it works on some programs but not on others. For example last night audio played without problem on Chromium, VLC and Amarok. Today after boot it played on VLC, but not Amarok (didn't realise to check Chromium), and now after reboot it plays on VLC and Amarok but not on Chromium.
Chromium means YouTube (HTML5) and others (Flash).
My DE is KDE (was xfce4 with mostly same audio trouble). Soundcard is USB DAC (SMSL Fort) and on KDE's Audio and Video setting I have it listed at the top and the "test" button works (i.e. it plays a sound).
$ lsmod | grep '^snd'
snd_hda_codec_realtek 54547 1
snd_usb_audio 131640 2
snd_hda_codec_generic 56366 1 snd_hda_codec_realtek
snd_hda_codec_hdmi 40208 1
snd_usbmidi_lib 21428 1 snd_usb_audio
snd_rawmidi 20278 1 snd_usbmidi_lib
snd_seq_device 5244 1 snd_rawmidi
snd_hda_intel 22270 4
snd_hda_controller 22911 1 snd_hda_intel
snd_hda_codec 104665 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
snd_hwdep 6652 2 snd_usb_audio,snd_hda_codec
snd_pcm 83207 5 snd_usb_audio,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller
snd_timer 19294 1 snd_pcm
snd 60780 24 snd_hda_codec_realtek,snd_usb_audio,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_rawmidi,snd_hda_codec_generic,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device
$ ls -l /dev/snd/
total 0
drwxr-xr-x 2 root root 60 Jun 20 15:48 by-id
drwxr-xr-x 2 root root 100 Jun 20 15:48 by-path
crw-rw----+ 1 root audio 116, 2 Jun 20 15:48 controlC0
crw-rw----+ 1 root audio 116, 8 Jun 20 15:48 controlC1
crw-rw----+ 1 root audio 116, 6 Jun 20 15:48 controlC2
crw-rw----+ 1 root audio 116, 5 Jun 20 15:48 hwC0D0
crw-rw----+ 1 root audio 116, 13 Jun 20 15:48 hwC1D0
crw-rw----+ 1 root audio 116, 3 Jun 20 15:48 pcmC0D3p
crw-rw----+ 1 root audio 116, 4 Jun 20 15:48 pcmC0D7p
crw-rw----+ 1 root audio 116, 10 Jun 20 15:48 pcmC1D0c
crw-rw----+ 1 root audio 116, 9 Jun 20 15:48 pcmC1D0p
crw-rw----+ 1 root audio 116, 11 Jun 20 15:48 pcmC1D1p
crw-rw----+ 1 root audio 116, 12 Jun 20 15:48 pcmC1D2c
crw-rw----+ 1 root audio 116, 7 Jun 20 15:57 pcmC2D0p
crw-rw----+ 1 root audio 116, 1 Jun 20 15:48 seq
crw-rw----+ 1 root audio 116, 33 Jun 20 15:48 timer
Many thanks.
Last edited by NGCjmo (2014-06-30 16:55:39)

What is the ouput of cat /proc/asound/cards, aplay -l?
For an example:
[firekage@arch_desktop ~]$ cat /proc/asound/cards
0 [XFi ]: SB-XFi - Creative X-Fi
Creative X-Fi 20K1 SB073x
1 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xf6080000 irq 17
2 [U0x46d0x825 ]: USB-Audio - USB Device 0x46d:0x825
USB Device 0x46d:0x825 at usb-0000:00:14.0-7, high speed
[firekage@arch_desktop ~]$
[firekage@arch_desktop ~] aplay -l
card 0: XFi [Creative X-Fi], device 4: ctxfi [IEC958 Non-audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
[firekage@arch_desktop ~]$
I think that you have multiple sound devices and their boot order changes after each reboot.
Last edited by firekage (2014-06-20 13:13:05)

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