New answers tagged mouse
At least on Debian-based systems such as Ubuntu there is a utility called xtrlock (1) available through the package repositories. This utility locks the keyboard and mouse until the password is entered while leaving windows visible. I find it useful for computers running information displays and the like.
I had the same problem and it crashed but now I got it working because I reattached a different ID. I have 2 physical USB receivers, one for a mouse+keyboard combination and the other for a separate mouse. Maybe you reattached the wrong USB receiver's ID, trying to turn a keyboard into a mouse? I got it working now.
If anyone stumbles upon this question nowadays reason might be debian bug:#755050, which can be worked around by (see debian bugtracker for details): dconf write /org/gnome/settings-daemon/plugins/cursor/active false
your script would look something like: #!/bin/bash /path/to/timidity "$1" But, can you right-click the midi file and "open with" timidity instead? Seems simpler.
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