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[Qemu-devel] [Bug 685096] Re: USB Passthrough not working for Windows 7


From: Nehal J Wani
Subject: [Qemu-devel] [Bug 685096] Re: USB Passthrough not working for Windows 7 guest
Date: Thu, 20 Aug 2015 16:48:41 -0000

Comment No. 23 by Manuel Baesler worked for me in Windows 10.
lsusb gave me:
Bus 001 Device 040: ID 8564:1000 Transcend Information, Inc. JetFlash
Qemu Flags used:
-device usb-ehci,id=usb,bus=pci.0,addr=0x4 -device 
usb-host,vendorid=0x8564,productid=0x1000,id=hostdev0,bus=usb.0

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https://bugs.launchpad.net/bugs/685096

Title:
  USB Passthrough not working for Windows 7 guest

Status in QEMU:
  Confirmed
Status in qemu package in Ubuntu:
  Confirmed
Status in qemu package in Debian:
  New

Bug description:
  USB Passthrough from host to guest is not working for a 32-bit Windows
  7 guest, while it works perfectly for a 32-bit Windows XP guest.

  The device appears in the device manager of Windows 7, but with "Error
  code 10: device cannot start". I have tried this with numerous USB
  thumbdrives and a USB wireless NIC, all with the same result. The
  device name and functionality is recognized, so at least some USB
  negotiation is taking place.

  I am trying this with the latest git-pull of QEMU-KVM.

  The command line to launch qemu-kvm for win7 is:
  sudo /home/user/local_install/bin/qemu-system-x86_64 -cpu core2duo -m 1024 
-smp 2 -vga std -hda ./disk_images/win7.qcow -vnc :1 -boot c -usb -usbdevice 
tablet -usbdevice host:0781:5150

  The command line to launch qemu-kvm for winxp is:
  sudo /home/user/local_install/bin/qemu-system-x86_64 -cpu core2duo -m 1024 
-smp 2 -usb -vga std -hda ./winxpsp3.qcow -vnc :0 -boot c -usbdevice tablet 
-usbdevice host:0781:5150

  Any help is appreciated.

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