I am using Java 8 running on the TK1 and using the javax.sound.sampled.* classes to play audio tones and samples thru the TK1 head phone port.
I had a few problems with 19.x kernel, occasionally the sound just wouldn’t play. I updated to 21.2 and then back to 21.1 and both versions seem to hang badly when I try to play any audio.
Does anyone have fix? or suggestions on where I am poke around to find a solution.
FYI… I confirmed that the sound is working on the device. I used RythmBox to play some MP3s. Looks like it is just Java that is the problem.