On Wed, 09 Dec 2020 12:56:55 +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 > > When running it without the quirk_alias option implicit feedback isn't > set. Then try to pass implicit_fb=1 option to snd-usb-audio module. It's a new option that was added recently. Takashi
