[fedora-virt] USB passthrough stopped working

VISEUR Eric eric.viseur at be.thalesgroup.com
Fri Aug 22 11:18:51 UTC 2014


Hi,

Sorry, forgot that bit.  Guess holidays made me lose some habits :)

QEMU: 2.1.0-4.fc20
Libvirt: 1.2.7-2.fc20
Virt-manager: 1.0.1-3.fc20

All from the fedora-virt-preview repo.

Best regards,

Eric VISEUR | System Engineer | THALES Belgium S.A.
Rue des Frères Taymans, 28 |B-1480 TUBIZE - BELGIUM
Phone : +32 2 391 23 74 | Cell : +32 497 92 36 80 | eric.viseur at be.thalesgroup.com


-----Original Message-----
From: Kashyap Chamarthy [mailto:kchamart at redhat.com] 
Sent: 22 August, 2014 12:09
To: VISEUR Eric
Cc: virt at lists.fedoraproject.org
Subject: Re: [fedora-virt] USB passthrough stopped working

On Fri, Aug 22, 2014 at 11:27:55AM +0200, VISEUR Eric wrote:
> Hi,
> 
> I've just reinstalled a computer with F20 and virt-preview and noticed 
> USB passthrough doesn't work with QEMU/KVM.  I add the device using 
> virt-manager.

No direct answer to your question, but explicitly spelling out versions of QEMU, libvirt and virt-manager will be useful for anyone who wants to reproduce your issue.

> 
> 
> ·         The device indeed appears in the XML declaration after I add
> it;
> 
> ·         Qemu instances are created under the qemu user;
> 
> ·         Qemu.conf wasn't modified;
> 
> ·         The device remains owned by root;
> 
> ·         The VM libvirt log signals a libusb error: libusb requires
> write access to USB device nodes.
> 
> Is it a known problem ?
> 
> Thanks in advance.
> 
> Eric VISEUR | System Engineer | THALES Belgium S.A.  Rue des Frères 
> Taymans, 28 |B-1480 TUBIZE - BELGIUM | 
> eric.viseur at be.thalesgroup.com<mailto:eric.viseur at be.thalesgroup.com>

--
/kashyap


More information about the virt mailing list