On Thu, 2018-06-14 at 12:43 -0400, Colin Beckingham wrote: > On 06/14/2018 10:16 AM, Tanu Kaskinen wrote: > > On Sat, 2018-06-02 at 10:36 -0400, Colin Beckingham wrote: > > > On May 25 openSUSE released a new distro update Leap 15 including > > > pulseaudio 11.1 > > > While in general sound works very well, there are occasional loud clicks > > > from default speakers > > > These loud clicks occur when loading a page in a browser or launching > > > Audacity for example > > > A web page will begin to load and all will be quiet until some > > > advertising element loads > > > at which point there may be, or may not be, a short set of loud clicks > > > from the speakers > > > even if the speakers are not set as the default device. > > > Once these initial clicks are done the rest of any true audio plays > > > correctly. > > > > > > If the sound device has been recently used then there likely will be no > > > click, > > > but after say 20 minutes of no audio activity then calling one of these > > > applications > > > even if it does not play any audio, will very likely produce these > > > initial loud clicks. > > > > > > Not sure how to troubleshoot this to get more info. > > > This behaviour was not seen in the previous version of openSUSE. > > > Any suggestions for next step? > > > > Does this happen without pulseaudio? Try this: > > > > pasuspender -- bash > > aplay -f cd -D hw:0 /dev/zero > > exit > > > > The first command starts a new shell, and while the shell runs, > > pulseaudio won't touch the hardware. The last command exits the shell, > > at which point pulseaudio will again access the hardware. The aplay > > command will play silence - does that produce the same clicks? > > > > This might be fixable in the kernel driver, here are instructions for > > filing alsa bugs: http://alsa-project.org/main/index.php/Bug_Tracking > > > > Thanks for this nice suggestion. As you say, suspending pulseaudio and > then running the aplay (in my case 'aplay -f cd -D hw:1,0 /dev/zero' > fits the bill) does produce the clicking. Clearly an alsa issue. Many > thanks. As a workaround you can remove module-suspend-on-idle from /etc/pulse/default.pa. PulseAudio will then keep playing silence all the time, so the pops related to opening the device won't happen. -- Tanu https://liberapay.com/tanuk https://www.patreon.com/tanuk
