It's good for me , BT or Cable with TypeC convert to 3.5mm jack . No black screen .
I had the same issue. The problem solve after updating all google apps from play store.
* Your warranty is now void. * We are not responsible for anything that may happen to your phone by installing any custom ROMs and/or kernels. * You do it at your own risk and take the responsibility upon yourself and you are not to blame us or XDA and its respected developers.
Use latest twrp: https://dl.akr-developers.com/?file...K30SUltra_v3.0.2_A12-apollo-skkk_9f6f039a.img