Same problem here with fldigi on rpi raspian.? fldigi is freezing, not the rpi operating system.? Initially was running on an rpi 3b so tried an rpi4 and had the same problem.? Tried all the local suggestions including ferrites on all leads, aluminum case, but I've had it freeze even when i haven't been transmitting.? I don't recall seeing this problem when I was running fldigi on a pc with ubuntu.? Just installed ubuntu on the rpi4 and haven't had a freeze yet, but with an intermittent problem like this it could be a while before I know if the operating system makes a difference.
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73, Mike w1eaa
