USB devices usually recognized as "unknown devices" in 3.2.8 on OSX

[masc]

Host: OSX 10.6.4 Guest: Windows XP SP3 USB devices tested: Apple USB Host Controller, Windows CE/Mobile USB/Cradle connection

USB devices are only recognized correctly very sporadically and I only managed to do it a few times using following steps:

• Detach incorrectly recognized "unknown device"
• Close vbox window and cancel the shutdown/savestate dialog (suspend/resume messages will be logged in vbox.log)
• Reattach usb device

Setting priority to critical, referring to USB component. Except for the workaround described above, which only works once out of 10-20 attempts, when the defect occurs, USB is mostly unusable.

[masc]

vbox.log

[masc]

​http://forums.virtualbox.org/viewtopic.php?f=2&t=33052&start=0 might relate, different platforms though.

[masc]

update: forget the replication steps I mentioned in the ticket description. I was first assuming the vbox state changes (suspend/resume) would have an effect, but it seems just timing related. I can also get devices to work by attaching/detaching them like a maniac using the usb icon in bottom statusbar of vbox window.

with both usb devices I tested (see description), looking at the icon's activity indication (orange/red circles blinking) is the fastest way to determine if the bug occurs or not.

when device attached correctly, icon will instantly start blinking. in most cases, when device is not recognized, it won't.

[masc]

usb filter devices, like external harddisks, are also affected. once devices are correctly attached, it will also keep working across vm reboots. when the vm is stopped and restarted however (for configuration change eg.), the dilemma starts over again.

[Ian E. Gorman]

I had a similar problem with XP SP3 32-bit installed with 2 CPU.

I could not duplicate the problem with Ubuntu 10.04 LTS 64-bit or SuSE 11.2 32 bit.

When I used an IMATION USB "thumb" drive (with a write-protect switch), it would be recognized when switched to read-only (write-protected), but not when switched to read-write (writable).

But then I thought about the fact that I had just installed XP SP3, I compared my USB settings. On the other guest systems, I had defined one filter, with the "remote" field set to "no" and all other fields blank. On the XP guest, I had set the "remote" field to "any". When I changed the "remote" field to "no", XP would recongnize a writable USB drive.

I hope htis is useful information.

[masc]

issue persists in 3.2.10.

[Charles B. Mc Kennie]

Vbox.log

[Charles B. Mc Kennie]

VBoxSVC log from folder Applications