Have you tried jack-diagnose?
We've seen problems on our build servers where a java process gets
stuck in the kernel in a way that causes all future calls to ps -ax to
hang. The jack startup tries to run ps, so the visible symptom is
jack failures. Try running ps -ax, and if that hangs, reboot t
I am getting the following jack-server error :
15:46:17 [ 16% 8051/47793] Ensure Jack server is installed and started
15:46:17 FAILED: /bin/bash -c "(prebuilts/sdk/tools/jack-admin
install-server prebuilts/sdk/tools/jack-launcher.jar
prebuilts/sdk/tools/jack-server-4.8.ALPHA.jar 2>&1 |