Could not load the Host USB Proxy service: VERR_NOT_FOUND -> setup issue

[Bryan Moffit]

USB not working with my Linux host using VB 4.0.12-72916.

I have the updated extensions pack installed (version matches current VB version). My user is in the vboxusers group (and has logged out and back in again).

USB was working with the same user and settings using VB 4.0.9.

Here's the error box message that appears when I click on "Settings" for the Client machine in the GUI:

Failed to access the USB subsystem.
Could not load the Host USB Proxy service: VERR_NOT_FOUND.

Result Code: 
NS_ERROR_FAILURE (0x00004005)
Component: Host
Interface: IHost {35b004f4-7806-4009-bfa8-d1308adba7e5}
Callee: IMachine {662c175e-a69d-40b8-a77a-1d719d0ab062}

My host machine: 64bit SMP RHEL5.7 (kernel 2.6.18-274.el5).

I'm hopeful that this isn't a dup of another ticket... I didn't see any with the same "VERR_NOT_FOUND" and "Host USB Proxy".

[Michael Thayer]

Could you please provide the output of

$ VBoxManage list usbhost

executed as the user running VirtualBox and

# ls -lR /dev/vboxusb

executed as root?

[Bryan Moffit]

Output of 'ls -lR /dev/vboxusb'

[Bryan Moffit]

Output of 'VBoxManage list usbhost' as user running VirtualBox

[Bryan Moffit]

Output of 'VBoxManage list usbhost' as root

[Bryan Moffit]

"Appears" to be a permissions problem... but I'm not sure why this popped up on an update.

[Michael Thayer]

The permissions on the device nodes under /dev/vboxusb look correct to me. Could you try another test? Stop all VirtualBox and VBoxSVC processes, run (as user)

$ strace -o VBoxSVC.out -f /usr/lib/virtualbox/VBoxSVC

then in a different terminal (again as user)

$ VBoxManage list usbhost

and finally stop VBoxSVC and attach the VBoxSVC.out log file to this ticket. Thanks.

[Bryan Moffit]

gzipped Result of strace on VBoxSVC and running 'VBoxManage list usbhost'

[Bryan Moffit]

Attached requested output. It's been gzipped because of the file size limit in this bug tracker.

[Michael Thayer]

You don't have any VBOX_USB settings in your environment by any chance do you?

[Bryan Moffit]

Dah... I do.

VBOX_USB=usbfs

This was an apparent "fix" from a previous version. I'll try NOT setting this variable..

[Bryan Moffit]

Unsetting this environment variable (a fix from 4.0.8?), did the trick.

Thanks for your help.

[Michael Thayer]

Thanks for the feedback.

[half12]

Hi,

I have this problem on OpenIndiana b151a with VirtualBox 4.1.2

(pasted log file removed)

[Frank Mehnert]

Please use the Attach button to attach the log file to this ticket!

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.