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+other: 0.798
+semantic: 0.796
+mistranslation: 0.779
+graphic: 0.768
+KVM: 0.766
+instruction: 0.762
+device: 0.759
+vnc: 0.735
+assembly: 0.731
+network: 0.677
+socket: 0.674
+boot: 0.633
+
+daemoniz not working on MacOS
+
+OS: MacOS Catalina 10.15.2
+Qemu install via brew: brew install qemu
+
+qemu-system-x86_64 -version
+QEMU emulator version 4.2.50 (v4.2.0-13-g084a398bf8-dirty)
+Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
+
+---
+
+Start Ubuntu Desktop 18.04 client as follow:
+
+IMG_CD=$HOME/Downloads/iso/ubuntu-18.04.3-desktop-amd64.iso
+IMG_FILE=$HOME/code/vm/qemu/u64d01.qcow2
+MAC_ADDR=xx:xx:xx:xx:xx:xx
+
+qemu-system-x86_64 \
+-no-user-config -nodefaults \
+-show-cursor \
+-name u64d01 \
+-M q35,accel=hvf,usb=off,vmport=off \
+-cpu host -smp 4 -m 2048 \
+-overcommit mem-lock=off \
+-overcommit cpu-pm=off \
+-rtc base=utc,clock=host \
+\
+-device virtio-tablet-pci \
+-device virtio-vga \
+\
+-device virtio-blk-pci,drive=ssd1 \
+-drive id=ssd1,file=$IMG_FILE,if=none,format=qcow2 \
+\
+-device virtio-net-pci,netdev=nic1,mac=$MAC_ADDR \
+-netdev user,id=nic1,ipv4=on,ipv6=on,hostname=u64d01,hostfwd=tcp::2222-:22 \
+\
+-device ich9-intel-hda,id=snd,msi=on \
+-device hda-output,id=snd-codec0,bus=snd.0,cad=0,audiodev=snd0 \
+-audiodev coreaudio,id=snd0,out.buffer-count=10000 \
+\
+-daemonize
+
+Give following error:
+
+objc[3432]: +[NSNumber initialize] may have been in progress in another thread when fork() was called.
+objc[3432]: +[NSNumber initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
+
+
+I checked "ps -ef|grep qemu" before and after the command, there was no qemu process running.
+
+Have you tried to disable the GUI with "-display none" already?
+
+I tried with following and it work:
+
+qemu-system-x86_64 -no-user-config -nodefaults -name u64d01 -M q35,accel=hvf,usb=off,vmport=off -cpu host -smp 4 -m 8192 -overcommit mem-lock=off -overcommit cpu-pm=off -rtc base=utc,clock=host -device virtio-blk-pci,drive=ssd1 -drive id=ssd1,file=/Users/js/code/vm/qemu/u64s01.qcow2,if=none,format=qcow2 -device virtio-net-pci,netdev=nic1,mac=52:54:98:76:54:33 -netdev user,id=nic1,ipv4=on,ipv6=on,hostname=u64d01,hostfwd=tcp::2222-:22 -daemonize -display none -device virtio-tablet-pci -device virtio-vga -show-cursor
+
+The difference from my original command:
+(1) removed -audiodev
+(2) added -display none
+
+So (1) and (2) together allow -daemonize work correctly.
+
+Other observation during testing:
+
+- If I only do (1), but not (2), the command will not exit, I cannot ssh into the vm. So it seems vm initialization is stuck. I can ctrl-c to break it.
+
+- If I don't do (2), regardless of (1), I get following errors:
+objc[1962]: +[NSNumber initialize] may have been in progress in another thread when fork() was called.
+objc[1962]: +[NSNumber initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
+
+Not sure if above observations are expected or unhandled error.
+
+I mixed up some thing in #2 above. Please ignore it and use following:
+
+---
+
+I tried with following and it work:
+
+qemu-system-x86_64 -no-user-config -nodefaults -name u64d01 -M q35,accel=hvf,usb=off,vmport=off -cpu host -smp 4 -m 8192 -overcommit mem-lock=off -overcommit cpu-pm=off -rtc base=utc,clock=host -device virtio-blk-pci,drive=ssd1 -drive id=ssd1,file=/Users/js/code/vm/qemu/u64s01.qcow2,if=none,format=qcow2 -device virtio-net-pci,netdev=nic1,mac=52:54:98:76:54:33 -netdev user,id=nic1,ipv4=on,ipv6=on,hostname=u64d01,hostfwd=tcp::2222-:22 -daemonize -display none -device virtio-tablet-pci -device virtio-vga -show-cursor
+
+The difference from my original command:
+
+(1) removed -audiodev
+(2) added -display none
+
+So (1) and (2) together allow -daemonize work correctly.
+
+Other observation during testing:
+
+- If I only do (1), but not (2):
+
+  - The command will not exit. I can break it with ctrl-c.
+  - A qemu-system-x86_64 process is created in background, but I cannot ssh into the it. I have use 'kill' to kill it.
+
+- If I don't do (1), regardless of (2), I get following errors(as in my bug description):
+
+objc[1962]: +[NSNumber initialize] may have been in progress in another thread when fork() was called.
+objc[1962]: +[NSNumber initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
+
+Not sure if above observations are expected or unhandled error.
+
+
+Anything else I should supply to move status away from incomplete?
+
+[Expired for QEMU because there has been no activity for 60 days.]
+