On 24.04.2013 18:02, Yves G wrote: > plug out device: > [ 3647.504041] usb 8-2: USB disconnect, address 4 > > > plug it again: > [ 3667.364026] usb 8-2: new full speed USB device using uhci_hcd and > address 5 > [ 3667.561637] usb 8-2: configuration #1 chosen from 1 choice > [ 3667.844668] input: Plantronics Plantronics C720 as > /devices/pci0000:00/0000:00:1d.2/usb8/8-2/8-2:1.3/input/input12 > [ 3667.844799] generic-usb 0003:047F:010A.0008: input,hiddev96,hidraw0: > USB HID v1.11 Device [Plantronics Plantronics C720] on > usb-0000:00:1d.2-2/input3 > > > tail -f /var/log/kern.log (redundant, but just in case): > Apr 24 17:38:40 Lucid-USB kernel: [ 3647.504041] usb 8-2: USB > disconnect, address 4 > Apr 24 17:39:00 Lucid-USB kernel: [ 3667.364026] usb 8-2: new full speed > USB device using uhci_hcd and address 5 > Apr 24 17:39:00 Lucid-USB kernel: [ 3667.561637] usb 8-2: configuration > #1 chosen from 1 choice > Apr 24 17:39:00 Lucid-USB kernel: [ 3667.844668] input: Plantronics > Plantronics C720 as > /devices/pci0000:00/0000:00:1d.2/usb8/8-2/8-2:1.3/input/input12 > Apr 24 17:39:00 Lucid-USB kernel: [ 3667.844799] generic-usb > 0003:047F:010A.0008: input,hiddev96,hidraw0: USB HID v1.11 Device > [Plantronics Plantronics C720] on usb-0000:00:1d.2-2/input3 > > > /proc/asound/card1/stream0: > > Plantronics Plantronics C720 at usb-0000:00:1d.2-2, full speed : USB Audio > > Playback: > Status: Stop > Interface 1 > Altset 1 > Format: S16_LE > Channels: 2 > Endpoint: 3 OUT (NONE) > Rates: 16000, 48000 > > Capture: > Status: Stop > Interface 2 > Altset 1 > Format: S16_LE > Channels: 1 > Endpoint: 3 IN (NONE) > Rates: 16000 > > > I don't have the USB analyzer, Plantronics does. I am in the process of > building some patched modules for their environments for them to test. > When playing a 16kHz sample directly on the device (bypassing PulseAudio > with aplay -D hw:1,0), I get only clicks and static. And you're saying that before the firware changed its default from 16000 to 48000, playback @16khz worked ok? Anyway, I will send in the patch with your "Reported-and-tested-by", as appearantly, the sample rate switch works ok now. Thanks, Daniel ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user