USB-C hub

[Christophe Vial]

Hi all,

I'm using Qubes R4.0 on a laptop with just one usb port and 2 usb-c ports. Sys-usb vm have been created during installation.

I need to connect 2 external usb disks simultaneously for backup. I can connect one to the usb-a port, but impossible to connect the second one via usb-c. I tried several usb-c hubs, direct usb-c calbe to the disk, nothing works.

The usb hub also cannot read SD cards.

However the usb hub can read older usb devices (old hard drives and flashdisks)

The usb hub works properly on the same laptop running archlinux.

I suspect the problem is related to USB 3.

Any workaround for this problem ?

Thank you for help.

[Achim Patzner]

Am Donnerstag, den 25.10.2018, 19:46 +0000 schrieb 'Christophe Vial' via qubes-users:

Any workaround for this problem ?

Connect the hub before booting and look at lspci; all my Lenovo systems turn on the required controllers (and only them!) only after something has been connected to the physical port and requested something. In Qubes 3.2 this was annoying because there were sudden appearances of USB (or Thunderbolt) controllers in Dom0 and it seems someone turned off adding busses that appear after booting now (good decision).

Achim

[Christophe Vial]

Thank you very much for you help! Booting with the usb hub connected and then assigning the device "usb controller thunderbolt 3 usb controller" to the sys-usb vm got everything working.





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