On Fri, 19 Nov 2021 00:26:28 +0100,
Kirill A. Shutemov wrote:
> 
> On Thu, Nov 18, 2021 at 05:57:35PM +0100, Takashi Iwai wrote:
> > And it'd be helpful if you can gather the log (from tracing) with the
> > patch below (from the start of speaker-test until the stall).
> 
> The trace is attached.

Thanks!  From the previous log, I noticed that you're using dmix
plugin, and that was the problem.  The dmix plugin changes the PCM
sw_params parameters at a late stage, and this confused the driver as
if it were OK with the low-latency mode.  And, while reviewing the
code, I also found another bug.

Below are two fix patches.  Please give it a try.


Takashi