[Bug 1871250] [NEW] Failed to create HAX VM

[Bug 1871250] [NEW] Failed to create HAX VM

[Russell Morris]

Public bug reported:

Hi,

I'm running the latest (master) of QEMU, though the version doesn't seem
to matter - I also checked back to v4.2.0, exactly the same issue. And
this isn't about the VM (guest), if I even just try to run,

> "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

Basically, just get a window to open, with acceleration enabled ... I get,
Open the vm device error:/dev/hax_vm/vm00, ec:3
Failed to open vm 0
Failed to create HAX VM
No accelerator found.

But I checked - I have installed Intel HAXM, and verified it's running,
> sc query intelhaxm
SERVICE_NAME: intelhaxm
        TYPE               : 1  KERNEL_DRIVER
        STATE              : 4  RUNNING
                                (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
        WIN32_EXIT_CODE    : 0  (0x0)
        SERVICE_EXIT_CODE  : 0  (0x0)
        CHECKPOINT         : 0x0
        WAIT_HINT          : 0x0

Just remove the accelerator (-accel hax), and I get a window - so this
is related to QEMU being able to contact / use the accelerator.

Help!?!?

Thanks!

** Affects: qemu
     Importance: Undecided
         Status: New

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Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

Re: [Bug 1871250] Failed to create HAX VM

[Volker Rümelin]

> Hi,
>
> I'm running the latest (master) of QEMU, though the version doesn't seem
> to matter - I also checked back to v4.2.0, exactly the same issue. And
> this isn't about the VM (guest), if I even just try to run,
>
>> "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

Hi Russell,

at the moment you need this patch at
https://lists.nongnu.org/archive/html/qemu-devel/2020-03/msg06831.html

But I can't see why v4.2.0 doesn't work on your system. The bug was introduced later.

> Basically, just get a window to open, with acceleration enabled ... I get,
> Open the vm device error:/dev/hax_vm/vm00, ec:3
> Failed to open vm 0
> Failed to create HAX VM
> No accelerator found.
>

ec:3 is ERROR_PATH_NOT_FOUND

With best regards,
Volker

[Bug 1871250] Re: Failed to create HAX VM

[James Le Cuirot]

I am also seeing this. It was working as of commit
d649689a8ecb2e276cc20d3af6d416e3c299cb17 so something must have changed
in the past month. I can't see anything HAX-related though.

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Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
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RE: [Bug 1871250] Failed to create HAX VM

[Morris, Russell]

Hi Volker,

I need to take back something I said - my error! 😊. I got fooled a bit, let me try to explain.

I ran the "stock" download, the Windows version that QEMU points to (web site). It does say it's v4.2.0, but seems it's not quite, it's v4.2.0 with some more recent updates (but version number not showing that). It fails when trying to use haxm.

So I went back, built "real" v4.2.0 myself (from scratch, to make sure) ... and haxm works, just like you said. I also updated to the master, and applied the patch from below ... now that works as well. Thanks!

I can close out this bug report if you want, or leave it open until this patch is in the master - whatever you prefer. And I can update the bug report if you want. Please just let me know how you want it handled.

Thanks again for the help!

... Russell



-----Original Message-----
From: Volker Rümelin <vr_qemu@t-online.de> 
Sent: Tuesday, April 7, 2020 2:18 PM
To: Bug 1871250 <1871250@bugs.launchpad.net>; Morris, Russell <rmorris@rkmorris.us>
Cc: qemu-devel@nongnu.org
Subject: Re: [Bug 1871250] Failed to create HAX VM

> Hi,
>
> I'm running the latest (master) of QEMU, though the version doesn't 
> seem to matter - I also checked back to v4.2.0, exactly the same 
> issue. And this isn't about the VM (guest), if I even just try to run,
>
>> "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

Hi Russell,

at the moment you need this patch at
https://lists.nongnu.org/archive/html/qemu-devel/2020-03/msg06831.html

But I can't see why v4.2.0 doesn't work on your system. The bug was introduced later.

> Basically, just get a window to open, with acceleration enabled ... I 
> get, Open the vm device error:/dev/hax_vm/vm00, ec:3 Failed to open vm 
> 0 Failed to create HAX VM No accelerator found.
>

ec:3 is ERROR_PATH_NOT_FOUND

With best regards,
Volker

[Bug 1871250] Re: Failed to create HAX VM

[James Le Cuirot]

I've bisected this back to b319df553707a3d44c7d027a5d5562f672a768a9,
which is odd because it's a merge commit about PowerPC. Perhaps I lost
my way somewhere or perhaps there's something hiding in here that breaks
it. I wasn't able to revert it in a hurry. I'll have a closer look
later.

** Tags added: windows

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https://bugs.launchpad.net/bugs/1871250

Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[Russell Morris]

Hi,

I received an email yesterday (content below) - and it worked! Not sure
why it's not here also (and why only via email), but let me share, hope
this helps! And BTW, when I say worked ... I applied this to the latest
master (locally), addreses the issue. So add this in to the master
(formally)?

Thanks!

================================

at the moment you need this patch at
https://lists.nongnu.org/archive/html/qemu-devel/2020-03/msg06831.html

But I can't see why v4.2.0 doesn't work on your system. The bug was
introduced later.

> Basically, just get a window to open, with acceleration enabled ... I 
> get, Open the vm device error:/dev/hax_vm/vm00, ec:3 Failed to open vm
> 0 Failed to create HAX VM No accelerator found.
>

ec:3 is ERROR_PATH_NOT_FOUND

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https://bugs.launchpad.net/bugs/1871250

Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[James Le Cuirot]

Thanks, that does indeed work for me too! Sorry for the confusion there,
apparently merge commits play havoc with git bisect. I also thought it
was strange that 4.2.0 didn't work for you as my last working commit
came after that.

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Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[Russell Morris]

No worries! And my apologies for some confusion too - I was trying
v4.2.0 from the official (recent) downloads, and I think something
wasn't quite right ... so I went back, manually built a clean v4.2.0. It
worked, as you suspected.

Good news is - seems we know the fix. Fast, and quite minor ... doesn't
get better than that. LOL! How to get this in the formal / official
code?

Thanks!

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https://bugs.launchpad.net/bugs/1871250

Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[James Le Cuirot]

It looks like it's been queued for merging already.

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Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[Russell Morris]

Awesome - thanks! I admit, not sure how you see the queue, but if you
say it's there, I trust you :-).

Any sort of LE?

Thanks again.

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https://bugs.launchpad.net/bugs/1871250

Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[James Le Cuirot]

Just going by https://lists.nongnu.org/archive/html/qemu-
devel/2020-03/msg06882.html.

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Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[Russell Morris]

That makes sense, thanks!

Do we leave this open until that "hits" (gets pulled in), or close it
out? I'm fine with either, whatever you prefer.

Appreciate all the help!

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Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[James Le Cuirot]

Wait, just in case, I guess. I'm just a lowly user here.

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Title:
  Failed to create HAX VM

Status in QEMU:
  New

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[Russell Morris]

NP, will do. Thanks again for the help!

** Changed in: qemu
       Status: New => Fix Committed

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Title:
  Failed to create HAX VM

Status in QEMU:
  Fix Committed

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1871250/+subscriptions

[Bug 1871250] Re: Failed to create HAX VM

[Thomas Huth]

https://git.qemu.org/?p=qemu.git;a=commitdiff;h=9f5a0664187e9411c5c

** Changed in: qemu
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1871250

Title:
  Failed to create HAX VM

Status in QEMU:
  Fix Released

Bug description:
  Hi,

  I'm running the latest (master) of QEMU, though the version doesn't
  seem to matter - I also checked back to v4.2.0, exactly the same
  issue. And this isn't about the VM (guest), if I even just try to run,

  > "c:\Program Files\qemu\qemu-system-x86_64.exe" -accel hax

  Basically, just get a window to open, with acceleration enabled ... I get,
  Open the vm device error:/dev/hax_vm/vm00, ec:3
  Failed to open vm 0
  Failed to create HAX VM
  No accelerator found.

  But I checked - I have installed Intel HAXM, and verified it's running,
  > sc query intelhaxm
  SERVICE_NAME: intelhaxm
          TYPE               : 1  KERNEL_DRIVER
          STATE              : 4  RUNNING
                                  (STOPPABLE, NOT_PAUSABLE, IGNORES_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0

  Just remove the accelerator (-accel hax), and I get a window - so this
  is related to QEMU being able to contact / use the accelerator.

  Help!?!?

  Thanks!

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