Bug 300975

Summary: USB Polling may activate OSD volume control
Product: [Applications] kmix Reporter: Masta.MCF
Component: On-Screen-Display (OSD)Assignee: Christian Esken <esken>
Status: RESOLVED FIXED    
Severity: normal CC: lamarque
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Masta.MCF 2012-06-01 04:51:38 UTC 
Using a Logitech Internet Navigator Keyboard in the USB port of Asus A8N-SLI Premium, the OSD will randomly appear and show changing volume amounts, even when no activity. Removing the keyboard from USB port and plug into the PS2 port via adapter, removes the OSD from randomly appearing, and volume controls on keyboard work and the OSD works properly. It is suspected that maybe the USB polling may be interacting with this keyboard unintentionally.

Reproducible: Always

Steps to Reproduce:
1.Have specified keyboard
2.Plug into USB port
3.Boot into KDE4
Actual Results:  
Described in details


The OSD can block the buttons of other application windows, preventing you from being able to click on them, until it disappears.
Comment 1 Christian Esken 2012-10-03 23:09:26 UTC 
The OSD only shows on pressing the volume keys. I would suspect that the keyboard randomly emits key presses. You possibly could find out like this:
 - Quit KMix (CTRL-q) and any other application that globally grabs the volume key
 - Start xev from a konsole window
 - Point the mouse to the xev window and wait a long time. If the window shows volume key events, you have a hardware/driver problem, unrelted to KMix.

Please report back.
Comment 2 Masta.MCF 2012-10-05 03:31:24 UTC 
(In reply to comment #1)
> The OSD only shows on pressing the volume keys. I would suspect that the
> keyboard randomly emits key presses. You possibly could find out like this:
>  - Quit KMix (CTRL-q) and any other application that globally grabs the
> volume key
>  - Start xev from a konsole window
>  - Point the mouse to the xev window and wait a long time. If the window
> shows volume key events, you have a hardware/driver problem, unrelted to
> KMix.
> 
> Please report back.

I can confirm after quitting kmix and starting xev , that it does show key events. It did not take very long at all. I will have to check into a hardware issue. 

 Thanks for looking into this.
Comment 3 Christian Esken 2012-10-07 20:29:18 UTC 
Thanks for the quick feedback. Closing bug.