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+debug: 0.899
+x86: 0.856
+user-level: 0.818
+graphic: 0.809
+performance: 0.794
+semantic: 0.715
+mistranslation: 0.678
+KVM: 0.655
+architecture: 0.591
+boot: 0.516
+device: 0.508
+ppc: 0.501
+files: 0.498
+register: 0.371
+permissions: 0.349
+hypervisor: 0.335
+kernel: 0.334
+network: 0.329
+i386: 0.315
+socket: 0.280
+PID: 0.262
+virtual: 0.256
+risc-v: 0.234
+VMM: 0.232
+peripherals: 0.220
+vnc: 0.213
+TCG: 0.205
+arm: 0.180
+assembly: 0.149
+
+qemu-system-x86_64 does not boot image reliably
+
+Booting image as root user with following command works randomly.
+
+./qemu-system-x86_64 -enable-kvm -curses -smp cpus=4 -m 8192 /root/ructfe2917_g.qcow2
+
+Most of the time it ends up on "800x600 Graphic mode"(been stuck there even for 4 hours before killed), but 1 out of ~20 it boots image correctly(and instantly).
+
+This is visible in v2.5.0 build from sources, v2.5.0 from Ubuntu Xenial and v2.1.2 from Debian Jessie.
+
+The image in question was converted from vmdk using:
+
+qemu-img convert -O qcow2 file.vmdk file.qcow2
+
+The image contains Ubuntu with grub.
+
+I can provide debug logs, but will need guidance how to enable them(and what logs are necessary).
+
+As a side note, it seems that booting is more certain after connecting(or mounting) partition using qemu-nbd/mount.
+
+Please always use the latest version of QEMU (currently v2.10, soon v2.11) when reporting bugs to the upstream QEMU project - we don't support old versions like v2.5 any more. So I guess you wanted to report a bug agains v2.5 in Ubuntu instead and I changed the target of this bug accordingly.
+
+I want a fix ;) and I do expect qemu to get it faster then Ubuntu.
+So I set up Ubuntu Zesty(to fullfill dependencies) and build qemu:
+QEMU emulator version 2.10.1 (v2.10.1-dirty)
+and... it's still there.
+
+Can you tell me how and what logs to provide?
+
+And it still happens on:
+
+QEMU emulator version 2.10.93 (v2.11.0-rc3-dirty)
+Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
+
+This looks not a QEMU bug to me. You may drop "-curses" first, and run again. Once get inside, change grub file(/etc/default/grub) by uncomment GRUB_TERMINAL=console. It should work then. If still not, then blacklist vga16fb and add "fbcon=map:99 text" in grub command line. Remember to run update-grub after change configure file.
+
+Have you ever tried the suggestions from Liang Yan ?
+
+[Expired for QEMU because there has been no activity for 60 days.]
+