Bug 293884 - Sound crackles on a USB headset when Desktop Effects are enabled
Summary: Sound crackles on a USB headset when Desktop Effects are enabled
Status: RESOLVED NOT A BUG
Alias: None
Product: kwin
Classification: Plasma
Component: compositing (show other bugs)
Version: 4.8.0
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-02-12 09:42 UTC by AngryKoala
Modified: 2012-02-13 16:40 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description AngryKoala 2012-02-12 09:42:16 UTC 
Version:           unspecified (using KDE 4.8.0) 
OS:                Linux

When playing sound via PulseAudio or ALSA in KDE 4.8, there are crackles whenever any Desktop Effect is activated.  Turning off Desktop Effects almost completely mitigates the issue.  Even with Desktop Effects turned off, resizing a window will have the same effect when sound is playing.

My headset is a Razer Megalodon (USB headset) and the issue is only apparent using this sound device.  My onboard audio device (Realtek ALC888) does not have this issue.

Reproducible: Always

Steps to Reproduce:
Resize any window or trigger any desktop effect while playing sound.

Actual Results:  
There is a crackle in the sound.

Expected Results:  
No crackle.
Comment 1 Thomas Lübking 2012-02-13 16:40:09 UTC 
It's an I/O issue - you're out of resources.

Check the CPU load and in doubt use ionice to lower niceness of the USB headphone (driver)
There is no fix for this.