This issue is fixed after adding the following lines to /etc/modprobe.d /alsa-base.conf:
alias snd-card-0 snd-usb-audio alias snd-card-1 snd-hda-intel options snd-usb-audio index=0 options snd-hda-intel index=1 Regards. -- You received this bug notification because you are a member of UBUNTU - AL, which is subscribed to Mythbuntu. https://bugs.launchpad.net/bugs/584680 Title: Logitech Z-5 USB speakers sometimes not detected Status in Mythbuntu, Ubuntu derivative focused upon MythTV: New Bug description: The Z-5 are USB-powered speakers, behaving optionally as a standalone external USB audio card (having its audio input through the same USB power wire) or as a pair of passive speakers when using a normal audio jack. First I had to append the following to /etc/modprobe.d/alsa-base.conf in order for the speakers to be "properly" detected: options snd-usb-audio index=0 Then the Z-5 seem to be detected by the USB subsystem only after alternative reboots/shutdowns, as lsusb command shows. They work normally when using a standard audio jack through the MB sound system (Azalia), though. I shall provide any additional debugging info upon request. -- Mailing list: https://launchpad.net/~linux-traipu Post to : linux-traipu@lists.launchpad.net Unsubscribe : https://launchpad.net/~linux-traipu More help : https://help.launchpad.net/ListHelp