Public bug reported: Ubuntu 10.04 LTS - Lucid Lynx cx88_alsa, usb-audio
I use an USB-audio-interface and a cx88-TV-card. Out of the box sound doesn't work with many applications like vlc or zapping because there is no alsa-default-device specified. No sound can be heared. (Other applications, totem for instance, work.) Some applications throw errors not finding a mixer device. For example alsamixer does so if started without a command-line-parameter specifying the device. The reason can be found in /etc/modprobe.d/alsa-base.conf The following section is to blame: # Prevent abnormal drivers from grabbing index 0 options bt87x index=-2 options cx88_alsa index=-2 options saa7134-alsa index=-2 options snd-atiixp-modem index=-2 options snd-intel8x0m index=-2 options snd-via82xx-modem index=-2 options snd-usb-audio index=-2 options snd-usb-us122l index=-2 options snd-usb-usx2y index=-2 options snd-usb-caiaq index=-2 If there are only those "abnormal drivers" in use alsa starts counting the devices by 1 instead of zero. Therefore there is no ALSA-default-device causing the mentioned problems. Workaround: Uncomment the appropriate line. For me it's the usb-audio- line ** Affects: ubuntu Importance: Undecided Status: New ** Tags: alsa alsa-base.conf default-device usb-audio ** Description changed: Ubuntu 10.04 LTS - Lucid Lynx cx88_alsa, usb-audio I use an USB-audio-interface and a cx88-TV-card. - Out of the box sound doesn't work with many applications like vlc or zapping as there is no alsa-default-device specified. No sond can be heared. (Other applications, totem for instance, work.) + Out of the box sound doesn't work with many applications like vlc or zapping because there is no alsa-default-device specified. No sound can be heared. (Other applications, totem for instance, work.) Some applications throw errors not finding a mixer device. For example alsamixer does so if started without a command-line-parameter specifying the device. The reason can be found in /etc/modprobe.d/alsa-base.conf The following section is to blame: # Prevent abnormal drivers from grabbing index 0 options bt87x index=-2 options cx88_alsa index=-2 options saa7134-alsa index=-2 options snd-atiixp-modem index=-2 options snd-intel8x0m index=-2 options snd-via82xx-modem index=-2 options snd-usb-audio index=-2 options snd-usb-us122l index=-2 options snd-usb-usx2y index=-2 options snd-usb-caiaq index=-2 If there are only those "abnormal drivers" in use alsa starts counting the devices by 1 instead of zero. Therefore there is no ALSA-default-device causing the mentioned problems. Workaround: Uncomment the appropriate line. For me it's the usb-audio- line -- no default ALSA-device https://bugs.launchpad.net/bugs/650665 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs