** Description changed:

  Hi,
  
  I use an xp guest on virtualbox with burning programs, since I upgraded
  to 14.04, operations like erasing or burning are not possible anymore,
  no matter what software I use.
  
- I tested an ubuntu 13.10, and it is the same problem, maybe for a month
- ago, everything was fine.
  
  It it seems to be an upgrade, I checked the virtualbox settings and upgraded 
guest addons, but it does not help.
  After initiating burning, the drive is trying to do something, but nothing 
happens, the vm freezes.
  
  Passthrough is still working at ubuntu 12.04 with current upgrades
  (virtualbox 4.1.12).
  
- packages at ubuntu 14.04:
+ 
+ Tested with:
+ lubuntu 14.04 64Bit 3.13.0-24-generic - not working
+ xubuntu 14.04 64Bit 3.13.0-24-generic - not working
+ 
  ii  virtualbox                                                  4.3.10-dfsg-1 
                        amd64        x86 virtualization solution - base binaries
  ii  virtualbox-dkms                                             4.3.10-dfsg-1 
                        all          x86 virtualization solution - kernel 
module sources for dkms
  ii  virtualbox-guest-dkms                                       4.3.10-dfsg-1 
                        all          x86 virtualization solution - guest 
addition module source for dkms
  ii  virtualbox-guest-utils                                      4.3.10-dfsg-1 
                        amd64        x86 virtualization solution - non-X11 
guest utilities
  ii  virtualbox-guest-x11                                        4.3.10-dfsg-1 
                        amd64        x86 virtualization solution - X11 guest 
utilities
  ii  virtualbox-qt                                               4.3.10-dfsg-1 
                        amd64        x86 virtualization solution - Qt based 
user interface
  
+ 
+ ubuntu  13.10 64 Bit 3.11.0-19-generic - working (last vb upgrades not 
installed)
+     ii  unity-scope-virtualbox                        
0.1+13.10.20130723-0ubuntu1             all          VirtualBox scope for Unity
+     ii  virtualbox                                    4.2.16-dfsg-3           
                amd64        x86 virtualization solution - base binaries
+     ii  virtualbox-dkms                               4.2.16-dfsg-3           
                all          x86 virtualization solution - kernel module 
sources for dkms
+     ii  virtualbox-ose                                4.1.18-dfsg-1ubuntu1.1  
                all          transitional package for virtualbox
+     ii  virtualbox-qt                                 4.2.16-dfsg-3           
                amd64        x86 virtualization solution - Qt based user 
interface
+ 
+ lubuntu 12.04 LTS 32Bit 3.2...         - working
+ 
+ 
  Regards

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https://bugs.launchpad.net/bugs/1312459

Title:
  virtualbox passthrough is not working

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