Dear Experts, I am using qemu for fun on Mac OSX 10.15, using QEMU from brew. qemu-system-i386 / qemu-system-x86_64 / qemu-system-ppc all hang up at the beginning, with black screen. Just run "qemu-system-i386" itself without any input, it hangs with black screen. Event with -monitor stdio, it won't take any input. But Ctrl-C can terminate the program.
Quans-MacBook-Pro $ qemu-system-i386 -monitor stdio QEMU 4.1.0 monitor - type 'help' for more information (qemu) qemu-system-i386 -version QEMU emulator version 4.1.0 Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers I have also built from the latest git master branch, it is the same: ./qemu-system-i386 -version QEMU emulator version 4.1.50 (v4.1.0-1571-g69b81893bc) Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers Everything worked before (last week). I don't know what I did may cause such a problem. Any help would be appreciated to debug this. Thanks, Quan