Bug 138820

Summary: kmix uses 100 % cpu after hibernate
Product: [Applications] kmix Reporter: Hans Dembinski <mr_smith>
Component: generalAssignee: Christian Esken <esken>
Status: RESOLVED DUPLICATE    
Severity: normal    
Priority: NOR    
Version: 2.6   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Hans Dembinski 2006-12-14 21:04:59 UTC 
Version:           2.6 (using KDE 3.5.5, Kubuntu (edgy) 4:3.5.5-0ubuntu3)
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.17-10-generic

Hi,

the above description tells everything. It happens not always, the chance could be ~30 %.

This could be related to an USB web cam, I am using. The kernel modules of all USB devices get removed on hibernate, and probably are not restored correctly in the resume. Maybe this confuses kmix.

Best regards...
Comment 1 Hans Dembinski 2006-12-16 15:03:46 UTC 
Procedure to reproduce:

1) Connect some USB audio device
2) Start kmix. The device has to be recognized in kmix as an audio device, so that you can adjust controls and everything.
3) Then detach that USB device. Kmix cannot cope with this and uses 100% CPU.

Also, kmix does not recognizes USB Audio devices, which are attached after it was started. So I conclude, that kmix cannot deal with USB events, more specifically Audio devices appearing and disappearing during runtime.

That this is the reason for this bug.
Comment 2 Hans Dembinski 2006-12-16 15:05:56 UTC 
Correction:
My statement from my first posting is wrong, it actually happens all the time if the USB device is attached. See my procedure to reproduce this bug.

Best regards!
Comment 3 Christian Esken 2006-12-22 18:08:49 UTC 

*** This bug has been marked as a duplicate of 127294 ***