Paul and list On Wed, Oct 26, 2022, 14:34 Paul Dorman <paul.dor...@gmail.com> wrote:
> Hi Ralf, > > thanks for your reply. Yes I have tried changing the USB ports, but there > was no improvement. My system has both USB2 and USB3 ports so by switching > I was also switching controllers. > > I have tested with plain ALSA, with S16_LE and S32_LE PCM sample formats, > as well as direct digital streams using the DSD_U16_LE, DSD_U32_LE formats. > The problem isn't resolved with any one of them, so it must be isolated to > one or a combination of the snd-usb-audio kernel module, alsa-lib itself, > or some issue with the device itself. > When you were using "plain ALSA" did you: 1. Disable Pulse and Pipewire access to the device? 2. Use the "hw" and "plughw" devices? > > Here are the audio streams available on the FiiO K5Pro. Perhaps there's a > clue there as to what parameters I might try to tune next. > > cat /proc/asound/Pro/stream0 > GuangZhou FiiO Electronics Co.,Ltd FiiO K5 Pro at usb-0000:06:00.0-1, high > spee : USB Audio > > Playback: > Status: Stop > Interface 1 > Altset 1 > Format: S32_LE > Channels: 2 > Endpoint: 0x01 (1 OUT) (ASYNC) > Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, > 705600, 768000 > Data packet interval: 125 us > Bits: 32 > Channel map: FL FR > Sync Endpoint: 0x81 (1 IN) > Sync EP Interface: 1 > Sync EP Altset: 1 > Implicit Feedback Mode: No > Interface 1 > Altset 2 > Format: S16_LE > Channels: 2 > Endpoint: 0x01 (1 OUT) (ASYNC) > Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, > 705600, 768000 > Data packet interval: 125 us > Bits: 16 > Channel map: FL FR > Sync Endpoint: 0x81 (1 IN) > Sync EP Interface: 1 > Sync EP Altset: 2 > Implicit Feedback Mode: No > Interface 1 > Altset 3 > Format: SPECIAL > Channels: 2 > Endpoint: 0x01 (1 OUT) (ASYNC) > Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, > 705600, 768000 > Data packet interval: 125 us > Bits: 32 > DSD raw: DOP=0, bitrev=0 > Channel map: FL FR > Sync Endpoint: 0x81 (1 IN) > Sync EP Interface: 1 > Sync EP Altset: 3 > Implicit Feedback Mode: No > > Cheers, > Paul > > > > On Wed, 26 Oct 2022 at 20:58, Ralf Mardorf <ralf.mard...@alice-dsl.net> > wrote: > >> On Wed, 2022-10-26 at 20:24 +1300, Paul Dorman wrote: >> > one of the USB3 ports >> >> Hi, >> >> did you test different USB ports? >> >> > Whatever is causing it, the problem has persisted through OS upgrades >> > and the switch from Pulseaudio to Pipewire. >> >> I'm in favour of using plain ALSA or jackd. For testing purpose don't >> use a sound server, test with plain ALSA. >> >> Regards, >> Ralf >> >> >> _______________________________________________ >> Alsa-user mailing list >> Alsa-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/alsa-user >> > _______________________________________________ > Alsa-user mailing list > Alsa-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/alsa-user >
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