<div dir="ltr">This is interesting, are you requiring to switch the profile only on the white edition ?<div> </div><div>I ask because I have a box full of these in storage, it would be interesting if there is a difference if there is different firmware at play on the device</div></div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 22, 2019 at 11:46 PM edio <<a href="mailto:edio@archlinux.us">edio@archlinux.us</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">I was looking for clues here and there, until I stumbled on this gist: <a href="https://github.com/taravasya/taravasya_snips/commit/a99bc93365aafbdc8a735fe24a9f4107f857144e#diff-e2c3b1bfad69cc1fb921d18bdb7c2bd5" rel="noreferrer" target="_blank">https://github.com/taravasya/taravasya_snips/commit/a99bc93365aafbdc8a735fe24a9f4107f857144e#diff-e2c3b1bfad69cc1fb921d18bdb7c2bd5</a> That gave me an idea, that perhaps switching profile from Duplex to Output would solve my issue. Indeed it did! I switched profile to Analog Stereo Output (instead of Duplex) and frequency autoswitching started working. Would you consider this a bug either in PulseAudio or Linux kernel? Thanks On 4/22/19 12:07 PM, edio wrote: > Hello, > I'm having trouble with sampling frequency autoswitching when using > E-MU 0404 USB soundcard. > > This case is rather strange. > > I have 2 E-MU 0404 USB soundcards: regular one (model EM8761) and > white edition (model EM8762). > > Autoswitching in PulseAudio works with the regular one but not with > the white edition. However in ALSA both sound cards work as expected. > > Here's dmesg output when I connect both: > > ---- > [ 842.304339] usb 1-1.2: new high-speed USB device number 6 using dwc2 > [ 842.446437] usb 1-1.2: New USB device found, idVendor=041e, > idProduct=3f04, bcdDevice= 1.00 > [ 842.466211] usb 1-1.2: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [ 842.479357] usb 1-1.2: Product: E-MU 0404 | USB > [ 842.489520] usb 1-1.2: Manufacturer: E-MU Systems, Inc. > [ 842.500246] usb 1-1.2: SerialNumber: > E-MU-09-3F04-07D90916-0914D-8761T2A > ... > [ 901.444396] usb 1-1.2: new high-speed USB device number 7 using dwc2 > [ 901.586367] usb 1-1.2: New USB device found, idVendor=041e, > idProduct=3f04, bcdDevice= 1.00 > [ 901.603744] usb 1-1.2: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [ 901.616060] usb 1-1.2: Product: E-MU 0404 | USB > [ 901.625459] usb 1-1.2: Manufacturer: E-MU Systems, Inc. > [ 901.635506] usb 1-1.2: SerialNumber: > E-MU-43-3F04-07D70109-0964D-STATION 01 > ---- > > From this both seem to be the same: vendor and product IDs are the > same. Yet somehow, PulseAudio works differently for them. Is there > maybe some sound card specific code in PulseAudio? > > Would appreciate any hints and suggestions on how to debug the issue. > > Thanks > _______________________________________________ pulseaudio-discuss mailing list <a href="mailto:pulseaudio-discuss@lists.freedesktop.org" target="_blank">pulseaudio-discuss@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a></blockquote></div>