I am also affected by this after upgrading to 10.15 Catalina. I experience the same behavior using `qemu-system-x86_64`, but I can't confirm whether other systems are also affected.
Building with SDL also fixed it for me so far: * `brew edit` * add `depends_on "sdl2"` among other dependencies * replace `--enable-cocoa` with `--disable-cocoa` * replace `--disable-sdl` with `--enable-sdl` * save, quit, and `brew install --build-from-source qemu` -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1847906 Title: Cocoa display hangs on macOS 10.15 (Catalina) Status in QEMU: New Bug description: I have downloaded the latest stable source tarball 4.1.0 and compiled it (i386-softmmu target). After opening a black window, QEMU hangs (spinning beach ball). When building with `--disable-cocoa --enable-sdl`, display seems to work fine. The same happened when I tried to build QEMU through HomeBrew and MacPorts. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1847906/+subscriptions
