Fedora Linux Support Community & Resources Center
Old 4th October 2009, 11:43 AM
dj-toonz Offline
Registered User
Join Date: Aug 2008
Location: Manchester , United Kingdom
Age: 42
Posts: 36
Very bad sound glitches using real time kernel & pulse

Hi all, Hope somebody can help me, I've got a quad core with 12 gig of ram & running a PAE/realtime kernel, but having massive sound problems . when I listen to any music or CD or sound, it starts glitching & breaking up after either 30secs 2:35secs or even any time. It various so I can't tell. I've taken a look at the /etc/security/limits.conf file & noticed a few extra lines in there from what I can tell there to get music applications to work in real time

# End of file

## Automatically appended by jack-audio-connection-kit
* - rtprio 99
* - memlock 4194304
* - nice -10

I've taken a look in the user/groups section & noticed that pulse-rt is empty & that Pulse is pulse for user

Should I put the End Of file at the bottom ?, what I'm asking is how can I fix the sound problems as it makes working with Renoise & ardour *hell of a problem* & I can't even listen to any audio online for more then 30 seconds because of all the problems

I've done a few tests & it is pulseaudio what is the problem

2025 toonz 9 -11 158m 3688 2748 S 85.2 1.6 0:47.49 pulseaudio
2025 toonz 9 -11 158m 7316 6376 S 1.1 3.1 0:59.57 pulseaudio
2025 toonz 9 -11 158m 3688 2748 S 97.5 1.6 0:63.12 pulseaudio

when it starts playing up the cpu levels shoot right up to about 89.5 - 92.6% then the speaker symbol on the task bar disappears & the comes back a few seconds after & I have to stop / start what ever I'm doing at the top & restart the application . would it be better removing pulseaudio & using ALSA so I can use my d.a.w programs

Last edited by dj-toonz; 4th October 2009 at 12:11 PM.
Reply With Quote
Old 4th October 2009, 01:30 PM
QuantumKnot Offline
Registered User
Join Date: Nov 2004
Location: Australia
Posts: 265
It looks like you got the same problem as I do, namely that we cannot get pulseaudio to run with RT priority but only with a nice level of -11.
QuantumKnot - originator of the "Verne" release name (possibly the last 'normal' release name) :)
Reply With Quote

bad, glitches, kernel, pulse, real, sound, time

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Real-time clock function and parallel port. Kernel compilation for VM paul sanz Using Fedora 0 29th September 2008 11:06 AM
Real time kernel. akex stone Alpha - Beta (Fedora 9 Only) 4 19th April 2008 09:51 PM
yum install a real time kernel premade? marko Using Fedora 2 18th April 2008 11:02 PM

Current GMT-time: 14:32 (Wednesday, 20-09-2017)

TopSubscribe to XML RSS for all Threads in all ForumsFedoraForumDotOrg Archive

All trademarks, and forum posts in this site are property of their respective owner(s).
FedoraForum.org is privately owned and is not directly sponsored by the Fedora Project or Red Hat, Inc.

Privacy Policy | Term of Use | Posting Guidelines | Archive | Contact Us | Founding Members

Powered by vBulletin® Copyright ©2000 - 2012, vBulletin Solutions, Inc.

FedoraForum is Powered by RedHat