[alsa-devel] Problem with CME UF5 MIDI keyboard master volume slider

[Clemens Ladisch]

Damon Chaplin wrote:
> On Wed, 2007-08-08 at 16:44 +0200, Clemens Ladisch wrote:
> > Please check whether the later keypresses arrive when using aseqdump.
> 
> This is a few keypresses, then some slider movement, and more
> keypresses. It looks like it's got completely confused by the input:
> 
> Waiting for data. Press Ctrl+C to end.
> Source_ Event_________________ Ch _Data__
>  20:1   Note on                 0  41  42
>  20:1   Note off                0  41  18
>  20:1   Note on                 0  45  58
>  20:1   Note off                0  45  20
>  20:1   Note on                 0  48  58
>  20:1   Note off                0  48  33
>  20:1   Note on                 0  43  65
>  20:1   Note off                0  43  32
>  20:1   System exclusive          F0 01 7F 39 F0 01 7F 3C ...
>  20:1   System exclusive          F0 01 7F 20 F0 01 7F 29 F0 01 7F 33 F0
> 01 7F 3C F0 01 7F 3E F0 01 7F 45 F0 01 7F 48 F0 01 7F 49 90 2F 1C 80 2F
> 1C 90 2F 40 80 2F 29 90 32 2F 90 30 29 80 30 0C 80 32 24 90 32 4D 80 ...

This is a bug in ALSA's rawmidi -> sequencer parser.

> Is it possible to workaround the problem?

Only by changing the driver.  Please wait until tomorrow.


Regards,
Clemens