Start failed: internal error: Unable to reset PCI device 0000:00:15.0: no FLR, 
PM reset or bus reset available, see /var/log/libvirt/libxl/libxl-driver.log 
for details:
2020-04-29 21:03:20.397+0000: libxl: libxl_pci.c:1202:libxl__device_pci_reset: 
The kernel doesn't support reset from sysfs for PCI device 0000:00:14.0

How have you've chosen the correct USB controller?

I only got one. ;-) But it has the same issue yours has ... most of them
do. Try this:

qvm-pci attach win --persistent --option no-strict-reset=True dom0:00_15.0

Assuming your controller is dom0:00_15.0 and your qube is called 'win'.


Sven thank you so much getting closer to the goal which I've been already 
investigating for weeks. For now I managed to attach my
Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C 
Controller #0

to my windows 7 box. After running "qvm-pci attach win --option no-strict-reset=True 
dom0:00_15.0" I get a message in windows that a new device is found. Unfortunately, 
windows cannot find drivers for it. In your previous message you warned already to 
install USB 3.0 drivers. I installed the USB drivers from Lenovo as I'm assuming that 
there will be a pass trough. Unfortunately, this doesn't work. Windows still is looking 
for drivers and doesn't find them.

Any ideas to resolve that?

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