boot: 0.149 semantic: 0.140 graphic: 0.136 device: 0.105 other: 0.077 files: 0.067 performance: 0.065 socket: 0.056 vnc: 0.053 permissions: 0.046 PID: 0.041 network: 0.032 debug: 0.025 KVM: 0.008 debug: 0.332 files: 0.188 boot: 0.095 performance: 0.094 other: 0.083 device: 0.038 PID: 0.037 semantic: 0.033 socket: 0.028 graphic: 0.025 network: 0.022 vnc: 0.014 permissions: 0.006 KVM: 0.005 Redox GUI hangs with 100% CPU on ARM Booting into Redox OS cli on ARM with qemu-system-i386 works fine. However, starting the Redox GUI (orbital) brings up the graphical interface and then starts using 100% CPU. I'd guess it's related to mouse detection and handling. The OS image is fully usable on x86. https://www.dropbox.com/s/u6v2k9wzcuiycfo/redox-disk.img.xz?dl=0 Which QEMU version have you been using here? Can you still reproduce the problem with the latest upstream version of QEMU? [Expired for QEMU because there has been no activity for 60 days.]