On Tue, 08 Dec 2020 21:53:14 +0100, meschi@xxxxxxxxx wrote: > > > > Am 08.12.2020 21:23 schrieb Takashi Iwai: > > On Tue, 08 Dec 2020 20:41:33 +0100, > > meschi@xxxxxxxxx wrote: > >> > >> > >> > >> Am 08.12.2020 15:57 schrieb Takashi Iwai: > >> > On Tue, 08 Dec 2020 15:50:28 +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
