Hi i think im having a similar issue with my External USB headphone DAC/AMP. Its a iBasso D2 headphone amp. (www.iBasso.com).
Hopefully i can help solve this too? I have the same issues... running ubuntu 8.04 and gnome. When i connect to my Toshiba A200 laptop it will sometimes work under amarok/Exaile/Audacious and sometimes not. I connect and can hear system sounds through the external DAC and can see the device via Volume Control > File > Change Device but when i play via Amarok using ALSA the sound only plays via the internal laptop sound card / speakers. I try: 1) unplug usb sound card, close amarok, plug in USB sound card again, open amarok ... no sound 2) try changing to another sound player (auto/pulseaudio/OSS) via amarok then back to ALSA and still nothing. if i run the following line mp3 plays perfectly through xine even though it won't play via any media players: xine -A alsa --verbose=1 /home/blah/test.mp3 I don't understand why xine works perfectly but other media players don't? i thought especially that amarok used xine for playback?? One thing i did notice is that the device order under Volume Control > File > Change Device changes. ie when its not working, the USB device appears as "1: USB Audio DAC (ALSA Mixer)" but when it IS working ie, now, it appears as "0: USB Audio DAC (ALSA Mixer)". Is this relevant? Do you think it relates to whether my USB device is 0 or 1? how do i change this after my laptop is booted so i don't need to reboot? here is results running sndstat while the device is running if it helps?: tail -2 /proc/asound/oss/sndstat 0: USB Mixer 1: Realtek ALC268 Also heres aplay -l output incase it helps: aplay -l **** List of PLAYBACK Hardware Devices **** card 0: default [USB Audio DAC ], device 0: USB Audio [USB Audio] Subdevices: 0/1 Subdevice #0: subdevice #0 card 1: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog] Subdevices: 1/1 i'll try rebooting in a sec and see if it does infact change so that my USB device is "1" and not work. -- external sound card (USB) is not detected most of the time https://bugs.launchpad.net/bugs/93922 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
