On Fri, Oct 21, 2016 at 04:35:46PM +0300, Tanu Kaskinen wrote: > On Wed, 2016-10-19 at 19:03 +0200, Oddbjørn Norstrand wrote: > > Hi > > > > I am having problems recording from digital input on a Creative Sound > > Blaster X-FI HD. Recordings work using alsa, but I only receive > > samples with value zero when using pulseaudio. > > > > This is the source from pacmd list-sources: > > index: 3 > > name: <alsa_input.usb-Creative_Technology_USB_Sound_Blaster_HD_000000tf-00.iec958-stereo> > > driver: <module-alsa-card.c> > > flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY > > state: RUNNING > > suspend cause: > > priority: 9048 > > volume: front-left: 65634 / 100% / 0.04 dB, front-right: 65634 / 100% / 0.04 dB > > balance 0.00 > > base volume: 65536 / 100% / 0.00 dB > > volume steps: 65537 > > muted: no > > current latency: 0.17 ms > > max rewind: 0 KiB > > sample spec: s16le 2ch 44100Hz > > channel map: front-left,front-right > > Stereo > > used by: 1 > > linked by: 1 > > configured latency: 40.00 ms; range is 0.50 .. 2000.00 ms > > card: 1 <alsa_card.usb-Creative_Technology_USB_Sound_Blaster_HD_000000tf-00> > > module: 7 > > properties: > > alsa.resolution_bits = "16" > > device.api = "alsa" > > device.class = "sound" > > alsa.class = "generic" > > alsa.subclass = "generic-mix" > > alsa.name = "USB Audio #1" > > alsa.id = "USB Audio" > > alsa.subdevice = "0" > > alsa.subdevice_name = "subdevice #0" > > alsa.device = "1" > > alsa.card = "2" > > alsa.card_name = "USB Sound Blaster HD" > > alsa.long_card_name = "Creative Technology USB Sound Blaster HD at usb-0000:00:14.0-2, full speed" > > alsa.driver_name = "snd_usb_audio" > > device.bus_path = "pci-0000:00:14.0-usb-0:2:1.0" > > sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2:1.0/sound/card2" > > udev.id = "usb-Creative_Technology_USB_Sound_Blaster_HD_000000tf-00" > > device.bus = "usb" > > device.vendor.id = "041e" > > device.vendor.name = "Creative Technology, Ltd" > > device.product.id = "3232" > > device.product.name = "USB Sound Blaster HD" > > device.serial = "Creative_Technology_USB_Sound_Blaster_HD_000000tf" > > device.string = "iec958:2" > > device.buffering.buffer_size = "352800" > > device.buffering.fragment_size = "176400" > > device.access_mode = "mmap+timer" > > device.profile.name = "iec958-stereo" > > device.profile.description = "Digital Stereo (IEC958)" > > device.description = "USB Sound Blaster HD Digital Stereo (IEC958)" > > alsa.mixer_name = "USB Mixer" > > alsa.components = "USB041e:3232" > > module-udev-detect.discovered = "1" > > device.icon_name = "audio-card-usb" > > ports: > > iec958-stereo-input: Digital Input (S/PDIF) (priority 0, latency offset 0 usec, available: unknown) > > properties: > > > > active port: <iec958-stereo-input> > > > > When I configure the the sound card to off in tab Configuration in > > pavucontrol this command works giving me a out.wav file with nonzero > > samples. > > ffmpeg -f alsa -i hw:2,1 -t 30 out.wav > > > > When I configure the digital input in pavucontrol and try this command > > I get a recording where all samples are zero. > > parec --device=alsa_input.usb-Creative_Technology_USB_Sound_Blaster_HD_000000tf-00.iec958-stereo --format=s16le --rate=44100 --channels=2 > samples > > > > Can anyone see what is wrong or help me further investigate the > > problem? > > This is pretty weird. It really looks like it should be working. Maybe > it's a mixer issue? That doesn't seem likely, but I don't have any > other ideas. So, start recording with parec, and while it's running, > save the output from "amixer -c2" and "pactl list". Then, stop parec, > set the card profile to "off" and start recording with ffmpeg. Save the > output from "amixer -c2" again. Then send the amixer and pactl output. > > "pactl list" will be so big that it's best to either upload it > somewhere where I can download it from, or attach it as a compressed > file. > > -- > Tanu > _______________________________________________ > pulseaudio-discuss mailing list > pulseaudio-discuss at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss Thank you for trying to solve my problem. I have attached a compressed file with the outputs you requested. I hope it helps. Since the last post I have also tried recording from analog input from the device and that works as expected using pulseaudio, but unfortunately at this time it is digital input I need. -------------- next part -------------- A non-text attachment was scrubbed... Name: files.tar.gz Type: application/octet-stream Size: 7349 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20161021/f1712c81/attachment-0001.obj>
