SOLVED: Ubuntu 8.10 + Wacom

Discussions related to using VirtualBox on Linux hosts.

SOLVED: Ubuntu 8.10 + Wacom

Postby tombigel » 15. Nov 2008, 00:13

I got USB working following this guide - http://www.davidgrant.ca/virtualbox_usb ... untu_hardy

But when I enable Tablet in the USB devices section I get an error when launching the virtual machine:
Code: Select all   Expand viewCollapse view
Failed to attach the USB device Tablet PTZ-630 [0102] to the virtual machine.

Failed to create a proxy device for the USB device. (Error: VERR_READ_ERROR).

Result Code:
NS_ERROR_FAILURE (0x80004005)
Component:
Console
Interface:
IConsole {e3c6d4a1-a935-47ca-b16d-f9e9c496e53e}

EDIT:
That was much easier then I thought (I never managed to make it work on older Ubuntu versions)

All I had to do was to run:
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sudo chown username /proc/bus/usb/XXX/YYY

where username is my user; XXX and YYY are "Bus" and "Dev #" of the device ( Manufacturer=Tablet, Product=PTZ-630 on my machine) as written in /proc/bus/usb/devices
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Postby Sasquatch » 15. Nov 2008, 01:31

There is a different method. See the VirtualBox FAQ for it.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org

Retired from this Forum since OSSO introduction.
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ok, thanks.

Postby tombigel » 15. Nov 2008, 10:24

Just to note that it wasn't easy to find the right way to do it, there are too many outdated guides out there, and too many methods to achieve the same effect.

besides that the "chown" thing was not clear, took me a while to understand that this is the issue, and Vbox cryptic error messages don't really help with that...
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Postby tombigel » 26. Nov 2008, 20:13

I don't get it, after reboot I get the error again
I tried to chown the entire /proc/bus/usb directory, doesn't help.
btw - the owner resets to root:root on reboot, how can i make it persistent?

Anyway, still trying to find the right way for the Wacom tabet.. everything else works.
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Postby stephanecharette » 26. Nov 2008, 20:19

tombigel wrote:btw - the owner resets to root:root on reboot, how can i make it persistent?


Add the chown command to your /etc/rc.local?

Stéphane
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Postby tombigel » 26. Nov 2008, 20:29

thanks, I'm still a bit clueless about advanced linux stuff.

I managed to get the tablet to work again, but only if MY user is the owner of /prob/bus/usb/[tablet device]

I don't get it, the device has a 664 permission, "root:vboxusers" ownership, and my user is a member of "vboxusers".
So why VirtualBox can access it only when the user is the owner?
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