[alsa-devel] 2.6.34-rc1: regression: ^Z no longer stops sound

Clemens Ladisch clemens at ladisch.de
Tue Mar 23 15:08:51 CET 2010

Pavel Machek wrote:
> On Sun 2010-03-14 17:20:13, Bill Davidsen wrote:
>> Pavel Machek wrote:
>>> In 2.6.33, hitting ^Z stopped mpg123 in a way you'd expect (both on
>>> thinkpad and geode notebook).
>>> On 2.6.34-rc1, hit ^Z and sound starts looping.
>> That's not new, I have seen it back as far as doing a suspend 
>> in a VM (KVM, no libvirt). But it only happens a few times a year, so I 
>> never chased it. I hate to report an occasional problem in an obsolete 
>> kernel, and I can't reproduce it.
>> Does it happen repeatably with the new kernel?
> It happened reliably so far, yes.

This sounds as if the device has been configured to ignore underruns.
What are the contents of /proc/asound/card0/pcm0p/sub0/{sw_params,status}
when it's looping, and when it's really suspended?


More information about the Alsa-devel mailing list