Le mercredi 31 octobre 2018 13:26:25 UTC+1, awokd a écrit : > Bertrand Lec wrote on 10/31/18 11:55 AM: > > Le mercredi 31 octobre 2018 12:35:27 UTC+1, awokd a écrit : > >> tfm853 via qubes-users wrote on 10/30/18 8:30 PM: > >>> I'm trying to use a C920 USB camera on a Thinkpad X1 Carbon 6gen, latest > >>> Qubes4. The VM is running debian-9, but i also tried fedora-26. I tried > >>> both connecting the camera directly to a USB port of the Thinkpad and via > >>> a powered USB hub. > >> > >>> > >>> Qubes shows the device as still being attached to the VM. I can detach > >>> and reattach without problems. > >>> > >>> Forwarding the Thinkpad's internal camera works fine. > >>> > >>> Are failures with particular USB devices to be expected? Does anyone know > >>> a good external webcam that works? > >>> > >> > >> Yes, some devices don't work well through redirect. If you have a spare > >> USB controller (not in use for your mouse & keyboard) you can assign it > >> directly to the VM and then connect the webcam, but you lose isolation > >> between that controller and the VM. > > > > Do you have an idea of _why_ some devices do not work well though redirect? > > I have the same problem with a network interface from a docking station. > > My guess is only some USB commands are making it through and devices > that use more obscure ones run into problems. I'm no developer, though. > Webcams in particular have been an issue for a while: > > https://github.com/QubesOS/qubes-issues/issues/2594 > https://github.com/QubesOS/qubes-issues/issues/4035 > > Didn't list them all. Does your docking station NIC show up as a USB > device? If not, it's a different issue.
Yes, it's a USB device, managed by sys-net. Bertrand -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/9cdf933e-ae01-4508-b257-fb62339ab7ce%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
