attaching usb 2.0 (or 3) host device fails
Bug #1727313 reported by
Christian Ehrhardt
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| libvirt (Ubuntu) |
Opinion
|
Undecided
|
Unassigned | ||
Bug Description
While verifying bugs related to usb passthrough I found that the default config can have issues with more modern USB devices.
Summary:
- for compatibility (with guests OSes) the default usb controller libvirt adds is a usb 1.1 controller
- If you want to attach a device that is USB >=2.0 only it will fail
- You can modify (or add) the usb controller to be of a newer type e.g. ich9-ehci1 then it will work
See [1] for more details
[1]: https:/
Revision history for this message
| Christian Ehrhardt (paelzer) wrote | #1 |
| Changed in libvirt (Ubuntu): | |
| status: | New → Opinion |
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Tools that try to simplify for the user like virt-manager already define a whole array of usb controllers (that is one of the effects when you select the Guest OS to be a modern Linux).
Libvirt as core helper has to rely on the lowest denominator unless otherwise instructed.
This bug was mostly for documentation, I think it would be wrong to change the default and break older guests. So closing as opinion, but now available for others to find - and the suggestion to add such a controller might help a few people.