<html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 2014年09月25日 17:40, Raymond Yau wrote: </div> <blockquote cite="mid:CAN8cciaxB0CRV992Zk1SJ7aB5grk=_NV4goZYtxQ_Bn+y7gJeQ@mail.gmail.com" type="cite"> > > On a machine without fixed connecting audio devices like internal > microphone or internal speaker, and when there is no external audio > devices plugging in, the default source/sink is alsa_input/alsa_output > and there is no input devices/output devices listed in the gnome > sound-setting. <a moz-do-not-send="true" href="https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=f1e762ddc8035f803d15f8c524151bf788482ec2">https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=f1e762ddc8035f803d15f8c524151bf788482ec2</a> On some hda codecs, the user may select stereo mix as input source Also if user have a tv card connected to line in , your patch require user to unplug the cable when he use Bluetooth headset </blockquote> I don't think so, if the user use the line in device and select the line in device as the default source, when the Bluetooth connected and set "only_from_unavailable=yes", the default source will not switch to Bluetooth, if user want to use Bluebooth as the active input, he needs to manually select Bluetooth headset from sound-setting, user does not need to unplug the cable. If users want to unconditionally switch to bluetooth as before this module does, he just pass "only_from_unavailable=no" or does not pass this argument. <blockquote cite="mid:CAN8cciaxB0CRV992Zk1SJ7aB5grk=_NV4goZYtxQ_Bn+y7gJeQ@mail.gmail.com" type="cite"> > > Under this situation, if we connect a bluetooth headset, the gnome > sound-setting will list bluez input/output devices, but they are not > active devices by default. This looks very weird that sound-setting > lists only one input device and one output device, but they are not > active. To change this situation, we add an argument, the policy is > if a new source/sink is connected and current default source/sink's > active_port is AVAILABLE_NO, we let the new added one switch to > default one. > What is the default source when user disconnect his Bluetooth headset ? </blockquote> The pulseaudio will use algorithm to find a highest priority input source and set it to default source. My patch just add a option to let pulseaudio to conditionally switch to sink/source, if users want the unconditionally switch as before, he can do it by setting the argument to no. <blockquote cite="mid:CAN8cciaxB0CRV992Zk1SJ7aB5grk=_NV4goZYtxQ_Bn+y7gJeQ@mail.gmail.com" type="cite"> <fieldset class="mimeAttachmentHeader"></fieldset> <pre wrap="">_______________________________________________ pulseaudio-discuss mailing list <a class="moz-txt-link-abbreviated" href="mailto:pulseaudio-discuss@lists.freedesktop.org">pulseaudio-discuss@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss">http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a> </pre> </blockquote> </body> </html>