[PVE-User] USB passthrouh with kernel 4.4.x

Eneko Lacunza elacunza at binovo.es
Wed May 11 11:06:47 CEST 2016

Hi Wolfgang,

El 11/05/16 a las 10:35, Wolfgang Bumiller escribió:
> On Mon, May 09, 2016 at 12:21:05PM +0200, Eneko Lacunza wrote:
>> Hi all,
>> We're trying to migrate a Windows server 2000 VMs, from a PVE 3.2 host with
>> kernel 2.6.32-28-pve to PVE 4.2 with kernel 4.4.6-1-pve .
>> This VM has a USB passtrough devide, a GSM modem:
>> Bus 003 Device 030: ID 1410:5010 Novatel Wireless
>> Sometimes it appears as 1410:4400 not 1410:5010 :) Don't know why is it
>> doing this funny ID changing.
> Sounds like a usb_modeswitch thing. Many USB modems can appear as either
> storage or modem with a command to make them switch, which also changes
> their USB id. See if you have the usb-modeswitch / usb-modeswitch-data
> packages installed. It comes with udev rules to automatically trigger
> when the device is plugged in - if this behavior is enabled then you
> should see it as one device first, and as the other device after a few
> seconds. Perhaps host and guest are fighting over this? If you don't
> need it you could probably remove it on the host, then the guest VM
> would be responsible for making it switch between storage and modem
> mode.
Thanks for the suggestion, didn't know about this package, but it is not 
# dpkg -l|grep usb
ii  libusb-0.1-4:amd64             2:0.1.12-25 amd64        userspace 
USB programming library
ii  libusb-1.0-0:amd64             2:1.0.19-1 amd64        userspace USB 
programming library
ii  libusbredirparser1:amd64       0.7-1 amd64        Parser for the 
usbredir protocol (runtime)
ii  usbutils                       1:007-2 amd64        Linux USB utilities

So some other thing is happening. :)


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