[alsa-devel] Duplicate wake-ups in pcm_lib.c

Jaroslav Kysela perex at perex.cz
Tue Jan 26 09:23:33 CET 2010

On Tue, 26 Jan 2010, Raymond Yau wrote:

>>>> Ok, I understand now. It would be better to use value 101 then - to see
>>>> last 10 ring buffer positions when jiffies correction occurs. Also, get
>>>> latest snapshot - there is a fix for jiffies check. Thanks.
> alsa-lib/test/pcm --verbose -Dhw -c2 -r48000 -f440  --method write_and_poll
> How do I know the double wake up is fixed ?

As far as know, only pulseaudio reports this issue in verbose mode.

> the echo still exist only XRUN_DEBUG_JIFFIESCHECK  bit is set

Please, could you set 101 to xrun_debug proc file and report relevant 
messages in dmesg as I asked before? I am curious where the problem is.


Jaroslav Kysela <perex at perex.cz>
Linux Kernel Sound Maintainer
ALSA Project, Red Hat, Inc.

More information about the Alsa-devel mailing list