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[Qemu-devel] [Bug 1033727] Re: USB passthrough doesn't work anymore with


From: Brian Murray
Subject: [Qemu-devel] [Bug 1033727] Re: USB passthrough doesn't work anymore with qemu-kvm 1.1.1
Date: Thu, 07 Feb 2013 21:17:25 -0000

Hello Klaus, or anyone else affected,

Accepted qemu-kvm into quantal-proposed. The package will build now and
be available at http://launchpad.net/ubuntu/+source/qemu-kvm/1.2.0
+noroms-0ubuntu2.12.10.3 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: qemu-kvm (Ubuntu Quantal)
       Status: In Progress => Fix Committed

** Tags added: verification-needed

-- 
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https://bugs.launchpad.net/bugs/1033727

Title:
  USB passthrough doesn't work anymore with qemu-kvm 1.1.1

Status in QEMU:
  Fix Released
Status in “qemu” package in Ubuntu:
  Fix Released
Status in “qemu-kvm” package in Ubuntu:
  Invalid
Status in “qemu-kvm” source package in Quantal:
  Fix Committed
Status in “qemu” source package in Raring:
  Fix Released
Status in “qemu-kvm” package in Debian:
  Fix Released

Bug description:
  ====================================
  SRU Justification:
  1. Impact: usb devices which worked with qemu previously stop working
  2. Development fix: a patch upstream entitled uhci: Don't queue up packets 
after one with the SPD flag set fixes the problem
  3. Stable fix: same patch as development fix.
  4. Test case: you must test with certain usb devices - see below for the 
exact kvm arguments to use.
  5. Regression potential: this patch is cherrypicked from upstream so should 
be safe.
  ====================================

  Hi,

  I have a "Bus 006 Device 002: ID 0d46:3003 Kobil Systems GmbH mIDentity Light 
/ KAAN SIM III" (kind of smart card) in an USB port which I make available to a 
Windows XP guest.
  This worked fine with every older qemu-kvm version I've used so far.

  But since 1.1.0 it doesn't work anymore.
  The device shows up in the guest, but the software can't access it anymore 
(and the guest is pretty unresponsive).

  On the host I get every 2 seconds this message:
  [ 7719.239528] usb 6-1: reset full-speed USB device number 2 using uhci_hcd

  Command line options are:
  /usr/bin/kvm
  ...
  -device usb-host,vendorid=0x0d46,productid=0x3003,bus=usb.0,port=3
  ...

  When I switch back to qemu-kvm 1.0.1 everything works fine again.
  Any idea what the problem could be?

  Thanks
  Klaus

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