other: 0.988
semantic: 0.982
assembly: 0.982
device: 0.981
instruction: 0.978
graphic: 0.977
boot: 0.976
network: 0.975
vnc: 0.968
socket: 0.963
KVM: 0.960
mistranslation: 0.882

Cannot use usb-host on Mac OS

Usb-host will not work on Mac OS 10.15.  Qemu runs, though it gives these errors and the drive does not show up.  Also, when Qemu is starting the drive ejects and remounts twice. Qemu built with ./configure --target-list=i386-softmmu,x86_64-softmmu --enable-sdl --disable-cocoa --enable-sdl-image.

qemu-system-i386 image.qcow -usb -device usb-kbd  -device usb-host,vendorid=0x0781,productid=0x5571
libusb: error [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found
libusb: error [darwin_claim_interface] interface not found

>
> Message: 9
> Date: Wed, 30 Oct 2019 01:46:54 -0000
> From: John Canada <email address hidden>
> To: <email address hidden>
> Subject: [Bug 1850570] [NEW] Cannot use usb-host on Mac OS
> Message-ID:
>         <
> <email address hidden>
> >
>
> Content-Type: text/plain; charset="utf-8"
>
> Public bug reported:
>
> Usb-host will not work on Mac OS 10.15.  Qemu runs, though it gives
> these errors and the drive does not show up.  Also, when Qemu is
> starting the drive ejects and remounts twice. Qemu built with
> ./configure --target-list=i386-softmmu,x86_64-softmmu --enable-sdl
> --disable-cocoa --enable-sdl-image.
>
> qemu-system-i386 image.qcow -usb -device usb-kbd  -device
> usb-host,vendorid=0x0781,productid=0x5571
> libusb: error [darwin_claim_interface] USBInterfaceOpen: another process
> has device opened for exclusive access
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] USBInterfaceOpen: another process
> has device opened for exclusive access
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
> libusb: error [darwin_claim_interface] interface not found
>
> ** Affects: qemu
>      Importance: Undecided
>          Status: New
>
> --
> You received this bug notification because you are a member of qemu-
> devel-ml, which is subscribed to QEMU.
> https://bugs.launchpad.net/bugs/1850570
>
> Title:
>   Cannot use usb-host on Mac OS
>
> Status in QEMU:
>   New
>
> Bug description:
>   Usb-host will not work on Mac OS 10.15.  Qemu runs, though it gives
>   these errors and the drive does not show up.  Also, when Qemu is
>   starting the drive ejects and remounts twice. Qemu built with
>   ./configure --target-list=i386-softmmu,x86_64-softmmu --enable-sdl
>   --disable-cocoa --enable-sdl-image.
>
>   qemu-system-i386 image.qcow -usb -device usb-kbd  -device
> usb-host,vendorid=0x0781,productid=0x5571
>   libusb: error [darwin_claim_interface] USBInterfaceOpen: another process
> has device opened for exclusive access
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] USBInterfaceOpen: another process
> has device opened for exclusive access
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1850570/+subscriptions
>
>
>
Have you tried running QEMU under root yet? I had a similar issue with
accessing the optical drive on my computer until I ran QEMU like this:

sudo qemu-system-i386 ...


Yes, I tried running as root.  I also tried it on a different computer that is running Mac OS 10.13, and it gave the same errors.


> On Oct 31, 2019, at 7:35 PM, <email address hidden> wrote:
> 
> Message: 10
> Date: Thu, 31 Oct 2019 18:39:11 -0000
> From: John Canada <email address hidden>
> To: <email address hidden>
> Subject: [Bug 1850570] Re: Cannot use usb-host on Mac OS
> Message-ID:
> 	<email address hidden>
> Content-Type: text/plain; charset="utf-8"
> 
> Yes, I tried running as root.  I also tried it on a different computer
> that is running Mac OS 10.13, and it gave the same errors.
> 
> -- 
> You received this bug notification because you are a member of qemu-
> devel-ml, which is subscribed to QEMU.
> https://bugs.launchpad.net/bugs/1850570
> 
> Title:
>  Cannot use usb-host on Mac OS
> 
> Status in QEMU:
>  New
> 
> Bug description:
>  Usb-host will not work on Mac OS 10.15.  Qemu runs, though it gives
>  these errors and the drive does not show up.  Also, when Qemu is
>  starting the drive ejects and remounts twice. Qemu built with
>  ./configure --target-list=i386-softmmu,x86_64-softmmu --enable-sdl
>  --disable-cocoa --enable-sdl-image.
> 
>  qemu-system-i386 image.qcow -usb -device usb-kbd  -device usb-host,vendorid=0x0781,productid=0x5571
>  libusb: error [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
>  libusb: error [darwin_claim_interface] interface not found
> 
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1850570/+subscriptions


Try this. Unplug the USB device. Plug it back in, and as fast as you can start QEMU. 

My theory is another program might be using the device. This could be Spotlight trying to index the drive.

Another possibility is libusb is not compatible with Mac OS 10.13 yet.

Do you have another computer that runs Mac OS 10.12 or under that you can test on?




I am also having problems with using real USB devices. I tried a C-Media USB sound card, a CISCO USB headset, and a PNY flash drive. All of them seem to be detected by the Windows 7 guest, but can't be started for some reason. I have tried running as root. I didn't see any libusb errors. My Windows 2000 guest also has issues with starting the USB sound card. 

My command-line:
sudo qemu-system-x86_64 -hda "Windows 7 HD.qcow2" -boot "c" -m 5000 -device ich9-usb-ehci1 -device usb-host,vendorid=0x0930,productid=0x6545

Even when I unmount the flash drive first Mac OS 11.1 will actually mount the flash drive when I try using it in QEMU.

On Sun, Apr 4, 2021 at 8:30 PM John Arbuckle <email address hidden> wrote:
>
> I am also having problems with using real USB devices. I tried a C-Media
> USB sound card, a CISCO USB headset, and a PNY flash drive. All of them
> seem to be detected by the Windows 7 guest, but can't be started for
> some reason. I have tried running as root. I didn't see any libusb
> errors. My Windows 2000 guest also has issues with starting the USB
> sound card.
>
> My command-line:
> sudo qemu-system-x86_64 -hda "Windows 7 HD.qcow2" -boot "c" -m 5000 -device ich9-usb-ehci1 -device usb-host,vendorid=0x0930,productid=0x6545
>
> Even when I unmount the flash drive first Mac OS 11.1 will actually
> mount the flash drive when I try using it in 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/1850570
>
> Title:
>   Cannot use usb-host on Mac OS
>
> Status in QEMU:
>   New
>
> Bug description:
>   Usb-host will not work on Mac OS 10.15.  Qemu runs, though it gives
>   these errors and the drive does not show up.  Also, when Qemu is
>   starting the drive ejects and remounts twice. Qemu built with
>   ./configure --target-list=i386-softmmu,x86_64-softmmu --enable-sdl
>   --disable-cocoa --enable-sdl-image.
>
>   qemu-system-i386 image.qcow -usb -device usb-kbd  -device usb-host,vendorid=0x0781,productid=0x5571
>   libusb: error [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>   libusb: error [darwin_claim_interface] interface not found
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1850570/+subscriptions
>

Hi John,

I experience similar issues when passing through USB devices in
qemu-system-ppc. macOS load a kext for the device and will not unload
it when libusb tries to connect to the device. I wrote this on the
emaculation site:

For USB storage devices you might need to:
Run a terminal and execute: sudo kextunload
/System/Library/Extensions/IOUSBMassStorageDriver.kext

Other devices might be using other kexts (drivers), so you would need
to find out which kext is loaded for the device. Some devices might be
using a kext that is also in use for other host devices. If you unload
such a kext, the host will loose access to those devices.

I have not yet found a way to reliably find which kexts are loaded and
to unload them.

Best,
Howard



This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:

 https://gitlab.com/qemu-project/qemu/-/issues/183