[LAU] Sustain pedal issue with undesired repeated notes (m-audio keystation 88es + qjackctl + qsynth)

[Nicolas BERCHER]

On 06.06.2010 15:07, Nicolas BERCHER wrote:
> Hi,
>
> I have a problem I can't face alone on the digital piano I made on 
> Debian Lenny with qsynth (v0.2.5-2.2), qjackctl (v0.3.2-1) and an 
> m-audio keystation 88es keyboard.
>
> When I play the piano, some notes will repeat themselves after a few 
> seconds only if I keep the sustain pedal pressed, just like a delay 
> effect would do.
> I reported that only 4 notes are concerned for the moment, they have 
> different repeat delays:
>  G  : ~7.5 sec (G4)
>  G# : ~7 sec (G#4)
>  A  : ~6.5 sec (A4)
>  A# : ~6 sec   (A#4)
> Note that the notes above, relatively to the middle C of a piano 
> keyboard called C3, goes from G4 to A#4.
>
> Could this be due to an hardware issue in the m-audio keyboard?
Edit: the problem described above also appears when I don't use the 
sustain pedal, but let the key pressed to let the note ring.
N.