[gentoo-user] Virtualbox not displaying USB devices

[gentoo-user] Virtualbox not displaying USB devices

[thelma]

I'm running Windows-7 in Virtualbox, everything worked OK yesterday but today Virtualbox does not see any USB devices. 
I have a USB label printer and it is recognized by Gentoo host: 

[ 6455.295503] usb 3-1: New USB device found, idVendor=04f9, idProduct=2028
[ 6455.295505] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 6455.295508] usb 3-1: Product: QL-570
[ 6455.295509] usb 3-1: Manufacturer: Brother
[ 6455.295511] usb 3-1: SerialNumber: G2Z917467
[ 6455.295612] usb 3-1: usb_probe_device
[ 6455.295615] usb 3-1: configuration #1 chosen from 1 choice
[ 6455.297499] usb 3-1: adding 3-1:1.0 (config #1, interface 0)
[ 6455.297541] usblp 3-1:1.0: usb_probe_interface
[ 6455.297544] usblp 3-1:1.0: usb_probe_interface - got id

Setting in Virtualbox: "USB 2.0 (EHCI) Controller" is Enabled.

I'm in "vboxusers" group.

fd@clinic-amd ~ $ groups
wheel uucp audio cdrom cdrw usb users scanner fd plugdev vboxusers

What else should I checked for?

Recently I just upgraded to "openssh-7" but that should have nothing to do with Virtualbox and USB.
I connected the QL-570 (USB printer) to my backup machine and VirtualBox recognize it OK

-- 
Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[J. Roeleveld]

On 26 November 2015 19:23:00 CET, thelma@sys-concept.com wrote:
>
>I'm running Windows-7 in Virtualbox, everything worked OK yesterday but
>today Virtualbox does not see any USB devices. 
>I have a USB label printer and it is recognized by Gentoo host: 
>
>[ 6455.295503] usb 3-1: New USB device found, idVendor=04f9,
>idProduct=2028
>[ 6455.295505] usb 3-1: New USB device strings: Mfr=1, Product=2,
>SerialNumber=3
>[ 6455.295508] usb 3-1: Product: QL-570
>[ 6455.295509] usb 3-1: Manufacturer: Brother
>[ 6455.295511] usb 3-1: SerialNumber: G2Z917467
>[ 6455.295612] usb 3-1: usb_probe_device
>[ 6455.295615] usb 3-1: configuration #1 chosen from 1 choice
>[ 6455.297499] usb 3-1: adding 3-1:1.0 (config #1, interface 0)
>[ 6455.297541] usblp 3-1:1.0: usb_probe_interface
>[ 6455.297544] usblp 3-1:1.0: usb_probe_interface - got id
>
>Setting in Virtualbox: "USB 2.0 (EHCI) Controller" is Enabled.
>
>I'm in "vboxusers" group.
>
>fd@clinic-amd ~ $ groups
>wheel uucp audio cdrom cdrw usb users scanner fd plugdev vboxusers
>
>What else should I checked for?
>
>Recently I just upgraded to "openssh-7" but that should have nothing to
>do with Virtualbox and USB.
>I connected the QL-570 (USB printer) to my backup machine and
>VirtualBox recognize it OK

You need to specifically assign the usb device to the guest.

--
Joost
-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 11:33 AM, J. Roeleveld wrote:
> On 26 November 2015 19:23:00 CET, thelma@sys-concept.com wrote:
>>
>> I'm running Windows-7 in Virtualbox, everything worked OK yesterday but
>> today Virtualbox does not see any USB devices. 
>> I have a USB label printer and it is recognized by Gentoo host: 
>>
>> [ 6455.295503] usb 3-1: New USB device found, idVendor=04f9,
>> idProduct=2028
>> [ 6455.295505] usb 3-1: New USB device strings: Mfr=1, Product=2,
>> SerialNumber=3
>> [ 6455.295508] usb 3-1: Product: QL-570
>> [ 6455.295509] usb 3-1: Manufacturer: Brother
>> [ 6455.295511] usb 3-1: SerialNumber: G2Z917467
>> [ 6455.295612] usb 3-1: usb_probe_device
>> [ 6455.295615] usb 3-1: configuration #1 chosen from 1 choice
>> [ 6455.297499] usb 3-1: adding 3-1:1.0 (config #1, interface 0)
>> [ 6455.297541] usblp 3-1:1.0: usb_probe_interface
>> [ 6455.297544] usblp 3-1:1.0: usb_probe_interface - got id
>>
>> Setting in Virtualbox: "USB 2.0 (EHCI) Controller" is Enabled.
>>
>> I'm in "vboxusers" group.
>>
>> fd@clinic-amd ~ $ groups
>> wheel uucp audio cdrom cdrw usb users scanner fd plugdev vboxusers
>>
>> What else should I checked for?
>>
>> Recently I just upgraded to "openssh-7" but that should have nothing to
>> do with Virtualbox and USB.
>> I connected the QL-570 (USB printer) to my backup machine and
>> VirtualBox recognize it OK
> 
> You need to specifically assign the usb device to the guest.
> 
> --
> Joost

How do you do that?

Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 11:33 AM, J. Roeleveld wrote:
> On 26 November 2015 19:23:00 CET, thelma@sys-concept.com wrote:
>>
>> I'm running Windows-7 in Virtualbox, everything worked OK yesterday but
>> today Virtualbox does not see any USB devices. 
>> I have a USB label printer and it is recognized by Gentoo host: 
>>
>> [ 6455.295503] usb 3-1: New USB device found, idVendor=04f9,
>> idProduct=2028
>> [ 6455.295505] usb 3-1: New USB device strings: Mfr=1, Product=2,
>> SerialNumber=3
>> [ 6455.295508] usb 3-1: Product: QL-570
>> [ 6455.295509] usb 3-1: Manufacturer: Brother
>> [ 6455.295511] usb 3-1: SerialNumber: G2Z917467
>> [ 6455.295612] usb 3-1: usb_probe_device
>> [ 6455.295615] usb 3-1: configuration #1 chosen from 1 choice
>> [ 6455.297499] usb 3-1: adding 3-1:1.0 (config #1, interface 0)
>> [ 6455.297541] usblp 3-1:1.0: usb_probe_interface
>> [ 6455.297544] usblp 3-1:1.0: usb_probe_interface - got id
>>
>> Setting in Virtualbox: "USB 2.0 (EHCI) Controller" is Enabled.
>>
>> I'm in "vboxusers" group.
>>
>> fd@clinic-amd ~ $ groups
>> wheel uucp audio cdrom cdrw usb users scanner fd plugdev vboxusers
>>
>> What else should I checked for?
>>
>> Recently I just upgraded to "openssh-7" but that should have nothing to
>> do with Virtualbox and USB.
>> I connected the QL-570 (USB printer) to my backup machine and
>> VirtualBox recognize it OK
> 
> You need to specifically assign the usb device to the guest.

Right clicking in the lower right hand corner, is not showing any USB
device; it is empty.

I think I will reinstall guest addition

Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[Heiko Baums]

Am 26.11.2015 um 19:23 schrieb thelma@sys-concept.com:
> 
> What else should I checked for?

When the Windows 7 guest is running, click in the menu bar of Virtualbox
guest window onto "Devices -> USB". Then check the USB device you want
to use within the Windows 7 guest.

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 11:49 AM, Heiko Baums wrote:
> Am 26.11.2015 um 19:23 schrieb thelma@sys-concept.com:
>>
>> What else should I checked for?
> 
> When the Windows 7 guest is running, click in the menu bar of Virtualbox
> guest window onto "Devices -> USB". Then check the USB device you want
> to use within the Windows 7 guest.

"Devices -> USB" is not showing any entries.

Re: [gentoo-user] Virtualbox not displaying USB devices

[J. Roeleveld]

On 26 November 2015 19:54:50 CET, thelma@sys-concept.com wrote:
>
>On 11/26/2015 11:49 AM, Heiko Baums wrote:
>> Am 26.11.2015 um 19:23 schrieb thelma@sys-concept.com:
>>>
>>> What else should I checked for?
>> 
>> When the Windows 7 guest is running, click in the menu bar of
>Virtualbox
>> guest window onto "Devices -> USB". Then check the USB device you
>want
>> to use within the Windows 7 guest.
>
>"Devices -> USB" is not showing any entries.

Did you load all the virtualbox kernel modules?

It says how to ensure they are loaded at boottime in the post emerge message.

--
Joost
-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 11:59 AM, J. Roeleveld wrote:
> On 26 November 2015 19:54:50 CET, thelma@sys-concept.com wrote:
>>
>> On 11/26/2015 11:49 AM, Heiko Baums wrote:
>>> Am 26.11.2015 um 19:23 schrieb thelma@sys-concept.com:
>>>>
>>>> What else should I checked for?
>>>
>>> When the Windows 7 guest is running, click in the menu bar of
>> Virtualbox
>>> guest window onto "Devices -> USB". Then check the USB device you
>> want
>>> to use within the Windows 7 guest.
>>
>> "Devices -> USB" is not showing any entries.
> 
> Did you load all the virtualbox kernel modules?
> 
> It says how to ensure they are loaded at boottime in the post emerge message.
> 

Yes, I think they are loaded.

cat /etc/conf.d/modules
...
modules="vboxdrv vboxnetflt vboxnetadp"

Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[Neil Bothwick]

[-- Attachment #1: Type: text/plain, Size: 370 bytes --]

On Thu, 26 Nov 2015 11:23:00 -0700, thelma@sys-concept.com wrote:

> I'm running Windows-7 in Virtualbox, everything worked OK yesterday but
> today Virtualbox does not see any USB devices.

What have you installed since then? Install and run genlop to see

emerge -a genlop
genlop --date yesterday


-- 
Neil Bothwick

"Criminal Lawyer" is a redundancy.

[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 181 bytes --]

Re: [gentoo-user] Virtualbox not displaying USB devices

[Heiko Baums]

Am 26.11.2015 um 20:14 schrieb thelma@sys-concept.com:
> 
> Yes, I think they are loaded.
> 
> cat /etc/conf.d/modules
> ...
> modules="vboxdrv vboxnetflt vboxnetadp"

Try adding vboxpci.

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 12:14 PM, Neil Bothwick wrote:
> On Thu, 26 Nov 2015 11:23:00 -0700, thelma@sys-concept.com wrote:
> 
>> I'm running Windows-7 in Virtualbox, everything worked OK yesterday but
>> today Virtualbox does not see any USB devices.
> 
> What have you installed since then? Install and run genlop to see
> 
> emerge -a genlop
> genlop --date yesterday
> 
> 
genlop --list --date 3 days ago
 * packages merged:

     Wed Nov 25 14:02:24 2015 >>> net-misc/openssh-7.1_p1-r2
     Thu Nov 26 12:26:59 2015 >>> dev-perl/DateManip-6.410.0
     Thu Nov 26 12:27:06 2015 >>> app-portage/genlop-0.30.9-r1

I reinstalled "guest addition" it did not help.

--
Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 12:35 PM, Heiko Baums wrote:
> Am 26.11.2015 um 20:14 schrieb thelma@sys-concept.com:
>>
>> Yes, I think they are loaded.
>>
>> cat /etc/conf.d/modules
>> ...
>> modules="vboxdrv vboxnetflt vboxnetadp"
> 
> Try adding vboxpci.

I'll try adding to /etc/conf.d/modules
modules="vboxdrv vboxnetflt vboxnetadp vboxpci"

But how to load the module without restarting the box?

Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[Heiko Baums]

Am 26.11.2015 um 20:55 schrieb thelma@sys-concept.com:

> I'll try adding to /etc/conf.d/modules
> modules="vboxdrv vboxnetflt vboxnetadp vboxpci"
> 
> But how to load the module without restarting the box?

Run as root:
modprobe vboxpci

To check if it's already loaded run:
lsmod | grep vboxpci

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 12:35 PM, Heiko Baums wrote:
> Am 26.11.2015 um 20:14 schrieb thelma@sys-concept.com:
>>
>> Yes, I think they are loaded.
>>
>> cat /etc/conf.d/modules
>> ...
>> modules="vboxdrv vboxnetflt vboxnetadp"
> 
> Try adding vboxpci.

There is no need to add this module, it is already loaded:

find /lib/modules/`uname -r` -name '*.ko'
/lib/modules/3.10.7-gentoo-r1/kernel/drivers/hwmon/it87.ko
/lib/modules/3.10.7-gentoo-r1/kernel/drivers/hwmon/hwmon-vid.ko
/lib/modules/3.10.7-gentoo-r1/kernel/drivers/char/kcopy/kcopy.ko
/lib/modules/3.10.7-gentoo-r1/kernel/drivers/i2c/algos/i2c-algo-pca.ko
/lib/modules/3.10.7-gentoo-r1/kernel/arch/x86/kernel/test_nx.ko
/lib/modules/3.10.7-gentoo-r1/misc/vboxnetadp.ko
/lib/modules/3.10.7-gentoo-r1/misc/vboxdrv.ko
/lib/modules/3.10.7-gentoo-r1/misc/vboxnetflt.ko
/lib/modules/3.10.7-gentoo-r1/misc/vboxpci.ko

--
Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[Heiko Baums]

Am 26.11.2015 um 21:00 schrieb thelma@sys-concept.com:

> There is no need to add this module, it is already loaded:
> 
> find /lib/modules/`uname -r` -name '*.ko'
> /lib/modules/3.10.7-gentoo-r1/kernel/drivers/hwmon/it87.ko
> /lib/modules/3.10.7-gentoo-r1/kernel/drivers/hwmon/hwmon-vid.ko
> /lib/modules/3.10.7-gentoo-r1/kernel/drivers/char/kcopy/kcopy.ko
> /lib/modules/3.10.7-gentoo-r1/kernel/drivers/i2c/algos/i2c-algo-pca.ko
> /lib/modules/3.10.7-gentoo-r1/kernel/arch/x86/kernel/test_nx.ko
> /lib/modules/3.10.7-gentoo-r1/misc/vboxnetadp.ko
> /lib/modules/3.10.7-gentoo-r1/misc/vboxdrv.ko
> /lib/modules/3.10.7-gentoo-r1/misc/vboxnetflt.ko
> /lib/modules/3.10.7-gentoo-r1/misc/vboxpci.ko

Those are the modules which are installed for your kernel. That doesn't
say if they are loaded.

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 01:05 PM, Heiko Baums wrote:
> Am 26.11.2015 um 21:00 schrieb thelma@sys-concept.com:
> 
>> There is no need to add this module, it is already loaded:
>>
>> find /lib/modules/`uname -r` -name '*.ko'
>> /lib/modules/3.10.7-gentoo-r1/kernel/drivers/hwmon/it87.ko
>> /lib/modules/3.10.7-gentoo-r1/kernel/drivers/hwmon/hwmon-vid.ko
>> /lib/modules/3.10.7-gentoo-r1/kernel/drivers/char/kcopy/kcopy.ko
>> /lib/modules/3.10.7-gentoo-r1/kernel/drivers/i2c/algos/i2c-algo-pca.ko
>> /lib/modules/3.10.7-gentoo-r1/kernel/arch/x86/kernel/test_nx.ko
>> /lib/modules/3.10.7-gentoo-r1/misc/vboxnetadp.ko
>> /lib/modules/3.10.7-gentoo-r1/misc/vboxdrv.ko
>> /lib/modules/3.10.7-gentoo-r1/misc/vboxnetflt.ko
>> /lib/modules/3.10.7-gentoo-r1/misc/vboxpci.ko
> 
> Those are the modules which are installed for your kernel. That doesn't
> say if they are loaded.

I see. OK
clinic-amd ssh # modprobe vboxpci
clinic-amd ssh # lsmod | grep vboxpci
vboxpci                11672  0
vboxdrv               287977  4 vboxnetadp,vboxnetflt,vboxpci

Do I need to log OUT/IN as user?
Restarting the VirtualBox did not help.

Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[Heiko Baums]

Am 26.11.2015 um 21:14 schrieb thelma@sys-concept.com:

> I see. OK
> clinic-amd ssh # modprobe vboxpci
> clinic-amd ssh # lsmod | grep vboxpci
> vboxpci                11672  0
> vboxdrv               287977  4 vboxnetadp,vboxnetflt,vboxpci
> 
> Do I need to log OUT/IN as user?
> Restarting the VirtualBox did not help.

Maybe you should check the file permissions of your printer device, and
add your user to the appropriate group. Or just try adding your user to
the group lp.

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 01:33 PM, Heiko Baums wrote:
> Am 26.11.2015 um 21:14 schrieb thelma@sys-concept.com:
> 
>> I see. OK
>> clinic-amd ssh # modprobe vboxpci
>> clinic-amd ssh # lsmod | grep vboxpci
>> vboxpci                11672  0
>> vboxdrv               287977  4 vboxnetadp,vboxnetflt,vboxpci
>>
>> Do I need to log OUT/IN as user?
>> Restarting the VirtualBox did not help.
> 
> Maybe you should check the file permissions of your printer device, and
> add your user to the appropriate group. Or just try adding your user to
> the group lp.

Which file is it?

running lsusb as users show the printer is recognized:
Brother Industries

$ lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 04c5:11a2 Fujitsu, Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 014: ID 04f9:2028 Brother Industries, Ltd
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

--
Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 01:33 PM, Heiko Baums wrote:
> Am 26.11.2015 um 21:14 schrieb thelma@sys-concept.com:
> 
>> I see. OK
>> clinic-amd ssh # modprobe vboxpci
>> clinic-amd ssh # lsmod | grep vboxpci
>> vboxpci                11672  0
>> vboxdrv               287977  4 vboxnetadp,vboxnetflt,vboxpci
>>
>> Do I need to log OUT/IN as user?
>> Restarting the VirtualBox did not help.
> 
> Maybe you should check the file permissions of your printer device, and
> add your user to the appropriate group. Or just try adding your user to
> the group lp.

In my backup system, where VirtualBox recognizes USB devices.
user is not "lp" group and everything works.
Besides there would be other entries in USB, and there are none.

--
Thelma

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 01:33 PM, Heiko Baums wrote:
> Am 26.11.2015 um 21:14 schrieb thelma@sys-concept.com:
> 
>> I see. OK
>> clinic-amd ssh # modprobe vboxpci
>> clinic-amd ssh # lsmod | grep vboxpci
>> vboxpci                11672  0
>> vboxdrv               287977  4 vboxnetadp,vboxnetflt,vboxpci
>>
>> Do I need to log OUT/IN as user?
>> Restarting the VirtualBox did not help.
> 
> Maybe you should check the file permissions of your printer device, and
> add your user to the appropriate group. Or just try adding your user to
> the group lp.
> 

When I run:
$ VBoxManage list usbhost

Host USB Devices:

<none>

There are no entries.

On my backup box it shows:

VBoxManage list usbhost
Host USB Devices:

UUID:               a441949f-caeb-457d-a81b-4b195ff15100
VendorId:           0x051d (051D)
ProductId:          0x0003 (0003)
Revision:           1.6 (0106)
Port:               0
USB version/speed:  2/1
Manufacturer:       American Power Conversion
Product:            Smart-UPS 1000 FW:COM 02.1 / UPS.05.D
SerialNumber:       AS1117120054
Address:
sysfs:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1//device:/dev/vboxusb/002/002
Current State:      Busy

Re: [gentoo-user] Virtualbox not displaying USB devices

[Heiko Baums]

Am 26.11.2015 um 21:44 schrieb thelma@sys-concept.com:

> Which file is it?
> 
> running lsusb as users show the printer is recognized:
> Brother Industries
> 
> $ lsusb
> Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 001 Device 002: ID 04c5:11a2 Fujitsu, Ltd
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 003 Device 014: ID 04f9:2028 Brother Industries, Ltd
> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

It's the file /dev/bus/usb/003/014 if the entry with Brother Industries,
Ltd is your printer.

Re: [gentoo-user] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 03:05 PM, Heiko Baums wrote:
> Am 26.11.2015 um 21:44 schrieb thelma@sys-concept.com:
> 
>> Which file is it?
>>
>> running lsusb as users show the printer is recognized:
>> Brother Industries
>>
>> $ lsusb
>> Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
>> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
>> Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
>> Bus 001 Device 002: ID 04c5:11a2 Fujitsu, Ltd
>> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
>> Bus 003 Device 014: ID 04f9:2028 Brother Industries, Ltd
>> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> 
> It's the file /dev/bus/usb/003/014 if the entry with Brother Industries,
> Ltd is your printer.

lsusb
...
Bus 003 Device 016: ID 04f9:2028 Brother Industries, Ltd

ll /dev/bus/usb/003/016
crw-rw-r-- 1 root lp 189, 271 Nov 26 16:09 /dev/bus/usb/003/016

Everybody can read the file so VirtualBox should be able to detect it.

--
Thelma

Re: [gentoo-user] [SOLVED] Virtualbox not displaying USB devices

[thelma]

On 11/26/2015 12:57 PM, Heiko Baums wrote:
> Am 26.11.2015 um 20:55 schrieb thelma@sys-concept.com:
> 
>> I'll try adding to /etc/conf.d/modules
>> modules="vboxdrv vboxnetflt vboxnetadp vboxpci"
>>
>> But how to load the module without restarting the box?
> 
> Run as root:
> modprobe vboxpci
> 
> To check if it's already loaded run:
> lsmod | grep vboxpci

The problem fixed itself.
But I'm not sure what fix it.

Maybe "modprobe vboxpci" or re-adding "user" to vboxusers group.

I just log-out / log-in and the USB printer was recognized by VirtualBox.

Thank you all for your suggestions.

--
Thelma.