On 06/27/2016 05:20 PM, Mark LaPierre wrote:
The reply to the bug post went on to say that the problem is that the
USB 2.0 camera will not work with the USB 1.1 default hub and that I
should change the hub from USB 1.1 to USB 2.0.
I see no way to do that.
I don't either, but maybe this is helpful... According to this
document, you can specify the bus that a USB device is attached to,
including pass-through devices:
http://git.qemu.org/?p=qemu.git;a=blob_plain;f=docs/usb2.txt;hb=HEAD
So, one option would be to create a shell script that modifies the
arguments given to qemu-system-x86_64, and then use "virsh edit <guest>"
to replace the default emulator with the path to your shell script. I
do that for a guest where I pass through a video card, which needs a PCI
express bridge:
$ cat /usr/local/bin/qemu-system-x86_64-passthrough
#!/bin/bash
declare -a qemuargs
for x in "$@"
do
if test "${x:0:21}" == "vfio-pci,host=01:00.0"
then
qemuargs+=(ioh3420,bus=pci.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1)
qemuargs+=(-device)
qemuargs+=(vfio-pci,host=01:00.0,id=hostvga,bus=root.1,addr=00.0,multifunction=on)
else
qemuargs+=("$x")
fi
done
/usr/bin/qemu-system-x86_64 "${qemuargs[@]}"
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