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No USB devices available

PostPosted: 10. May 2012, 13:07
by ct2034
:cry: Hi,
I am running Ubuntu 12.04 with VirtualBox and a Windows 7x64 as guest. But I can't mount any USB devices, they are all greyed out. I used to work, but now it doesn't. I tried already several things:

This is NOT a problem of vboxusers group! I am in this group:
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ch@ch-laptop:~$ id
uid=1000(ch) gid=1000(ch) groups=1000(ch),4(adm),20(dialout),24(cdrom),46(plugdev),105(lpadmin),119(admin),122(sambashare),127(vboxusers)


Another solution i tired is this one:
Edit /etc/fstab and add:
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none /proc/bus/usb usbfs devgid=XXX,devmode=664 0 0

but I can't add the folder usb to bus, maybe because I'm using 12.04 ..


Please Help me, I tried everything!

Re: No USB devices available

PostPosted: 10. May 2012, 14:21
by Perryg
Install matching versions of the Extension Pack.
How to install Extension Pack

Re: No USB devices available

PostPosted: 10. May 2012, 16:58
by ct2034
Perryg wrote:Install matching versions of the Extension Pack.
How to install Extension Pack

Are there different Extension Packs? (cause u r using plural ..)
I have re-installed the regular one (which is the only one, i believe)
It didn't changed anything, but thanks for your answer.

Re: No USB devices available

PostPosted: 10. May 2012, 19:49
by mpack
Isn't this obvious? Each release version of VirtualBox has its own matching extension pack. The version numbers reported by VirtualBox and the Extension Pack should match.

Re: No USB devices available

PostPosted: 10. May 2012, 19:53
by ct2034
mpack wrote:Isn't this obvious? Each release version of VirtualBox has its own matching extension pack. The version numbers reported by VirtualBox and the Extension Pack should match.

it is. but i only have to install one. but its the right one and all is fine. (or nothing, cause my error still occurs)

Re: No USB devices available

PostPosted: 19. Jul 2012, 20:45
by holzdog
I'm in the same boat v12.04 I see my Thum device in Linux but not available on W7 virtual client.

Added usb 1-5.1 new low speed USB device number 4 using ehci_hcd
genericusb 0003:0C70:7050.0003 hiddev0, hidraw2: USB HID v1.00 Device [Pratical design Gr USB Temp?Humidity Sensor] on usb-0000:00:1d.7-5.1/input0

Like to mount on lInux as test first any suggestions?

Added extension pack no help.

Re: No USB devices available

PostPosted: 19. Jul 2012, 20:51
by Perryg
User name in the vboxusers group? minimum of log off and on before permissions take effect.

Re: No USB devices available

PostPosted: 19. Jul 2012, 22:08
by ct2034
Perryg wrote:User name in the vboxusers group? minimum of log off and on before permissions take effect.

Do you want to read my first entry, please ...

Re: No USB devices available

PostPosted: 19. Jul 2012, 22:22
by Perryg
ct2034 wrote:
Perryg wrote:User name in the vboxusers group? minimum of log off and on before permissions take effect.

Do you want to read my first entry, please ...

I had assumed you had found your problem and the reply was to holzdog. Are you still not able to use USB devices and are they still greyed out for you?

Re: No USB devices available

PostPosted: 7. Feb 2013, 06:08
by threeta
Perryg wrote:User name in the vboxusers group? minimum of log off and on before permissions take effect.

Perfect - solved my issue 100%
Thanks Perryg :D