Hi All, I've been testing pulseaudio-3.0 and now I have some questions. Is there any updated documentation available describing the usage of UCM in pulsaudio and can the current UCM implementation handle multiple soundcards? I plan to use two or three soundcards (all having there own UCM configuration) and I'd like to use them with "module-loopback". During testing I also run into some issues. With my current configuration [1], I get a double-free, due missing modifiers. I solved this with the attached patch [2]. But then I hit the assertation in file src/modules/alsa/alsa-ucm.c function ucm_get_device_property:250 pa_assert(device->playback_channels || device->capture_channels); I assume that this is the result of some missing entries in the UCM config, but I can't see my issue. Thanks, Soeren [1] ucm-configs.tar.xz [2] fix-double-free.patch -- Avionic Design GmbH Soeren Grunewald Wragekamp 10 D-22397 Hamburg Germany Tel.: + 49 40 88187-107 Fax: + 49 40 88187-150 Email: soeren.grunewaldavionic-design.de Avionic Design GmbH Amtsgericht Hamburg HRB 82598 Gesch?ftsf?hrung: Cornelis Broers, Sven R?cker, Jan Palle Ust.-Ident-Nr.: DE813378254 Diese E-Mail kann vertrauliche und/oder rechtlich gesch?tzte Informationen enthalten. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrt?mlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese E-Mail. Das unerlaubte Kopieren sowie die unerlaubte Weitergabe dieser E-Mail ist nicht gestattet. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden. -------------- next part -------------- A non-text attachment was scrubbed... Name: fix-double-free.patch Type: text/x-patch Size: 514 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20130107/b422903d/attachment.bin> -------------- next part -------------- A non-text attachment was scrubbed... Name: ucm-configs.tar.xz Type: application/x-xz Size: 1200 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20130107/b422903d/attachment-0001.bin>