-usbdevice host:... relies on usbfs, which is not mounted by default
Bug #258768 reported by
Matt Zimmerman
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
kvm (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
qemu (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: kvm
Attempts to use -usbdevice host:vvvv:pppp fail with "Warning: could not add USB device host:vvvv:pppp". This is because KVM and QEMU attempt to access them via the obsolete usbfs (/proc/bus/usb), which is not mounted by default in Ubuntu. mounting it manually with "sudo mount -t usbfs usbfs /proc/bus/usb" gets it working (modulo permission tweaks).
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