On Tue, 08 Dec 2020 23:14:41 +0100, meschi@xxxxxxxxx wrote: > > >> >> >> > It's likely the issues with the implicit feedback. > >> >> >> > > >> >> >> > The latest development tree (either linux-next tree or > >> >> >> > topic/usb-audio-refactoring branch of my sound.git tree) contains the > >> >> >> > improvements of the implicit feedback mode. > >> >> >> > > >> >> >> > > >> >> >> > Takashi > >> >> When I try to play a file now this happens: > >> >> $ aplay -D plughw:CARD=UR22 ./file.wav > >> >> Playing WAVE './file.wav' : Signed 16 bit Little Endian, Rate 44100 > >> >> Hz, Stereo > >> >> aplay: set_params:1407: Unable to install hw params: > >> > > >> > It's a known side-effect of the implicit feedback mode, and the latest > >> > patchset I mentioned earlier addresses the issue. > >> > > >> > > >> > Takashi > >> > >> I'm already running the kernel built from the linux-next tree... > >> I built next-20201208 from > >> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > >> Is there another patch set that I'm missing? > > > > Hm, strange. > > > > Please check the contents of /proc/asound/card*/stream* file. With > > the latest patches and the implicit feedback mode, you should see the > > lines like "Sync Endpoint: 0x...." and "Implicit Feedback Mode: yes". > > > > > > Takashi > > Yes, I see this: > > Yamaha Corporation Steinberg UR22 at usb-0000:00:1a.7-3, high speed : > USB Audio > > Playback: > Status: Stop > Interface 1 > Altset 1 > Format: S24_3LE > Channels: 2 > Endpoint: 0x07 (7 OUT) (ASYNC) > Rates: 44100, 48000 > Data packet interval: 125 us > Bits: 24 > Channel map: FL FR > Sync Endpoint: 0x81 (1 IN) > Sync EP Interface: 2 > Sync EP Altset: 1 > Implicit Feedback Mode: Yes > Interface 1 > Altset 2 > Format: S24_3LE > Channels: 2 > Endpoint: 0x07 (7 OUT) (ASYNC) > Rates: 88200, 96000 > Data packet interval: 125 us > Bits: 24 > Channel map: FL FR > Sync Endpoint: 0x81 (1 IN) > Sync EP Interface: 2 > Sync EP Altset: 1 > Implicit Feedback Mode: Yes > Interface 1 > Altset 3 > Format: S24_3LE > Channels: 2 > Endpoint: 0x07 (7 OUT) (ASYNC) > Rates: 176400, 192000 > Data packet interval: 125 us > Bits: 24 > Channel map: FL FR > Sync Endpoint: 0x81 (1 IN) > Sync EP Interface: 2 > Sync EP Altset: 1 > Implicit Feedback Mode: Yes > > Capture: > Status: Stop > Interface 2 > Altset 1 > Format: S24_3LE > Channels: 2 > Endpoint: 0x86 (6 IN) (ASYNC) > Rates: 44100, 48000 > Data packet interval: 125 us > Bits: 24 > Channel map: FL FR > Interface 2 > Altset 2 > Format: S24_3LE > Channels: 2 > Endpoint: 0x86 (6 IN) (ASYNC) > Rates: 88200, 96000 > Data packet interval: 125 us > Bits: 24 > Channel map: FL FR > Interface 2 > Altset 3 > Format: S24_3LE > Channels: 2 > Endpoint: 0x86 (6 IN) (ASYNC) > Rates: 176400, 192000 > Data packet interval: 125 us > Bits: 24 > Channel map: FL FR OK, then it means that your device isn't compatible with UR22C. It has a different endpoint assignment. What happens if you run this kernel without quirk_alias option? Is the implicit feedback still set? Takashi
