Keil ULINK USB device not usable.

[rasasi]

Linux host, Windows target. I plug this device with usb id c251:2710, I changed the whole /proc/bus/usb to owner the user running vbox. I removed all the filter but on the usb devices list available this device appeared as uknown and grayed where on previous vbox versions, the device was perfectly usable.

Someone at the #vbox channel suggested me that there could be a problem in the parser for the usb devices causing thus the problem.

I'm attaching the /proc/bus/usb/devices

Thanks.

[rasasi]

I've tested with other versions of vbox. 1.5.0 fails but 1.40 does work.

[Frank Mehnert]

With VirtualBox 1.5.4 something regarding USB changed. Make sure that all files in /proc/bus/usb/*/* are writable by the user running VBox and /proc/bus/usb/devices is at least readable. Unfortunately, it is no longer possible to verify easily if a device could work or not using a user-provided /proc/bus/usb/devices file. So please check yourself if VirtualBox 1.5.4 solves your USB problem.

Make sure that you drop/merge all snapshots/saved states of every VM before you upgrade.

[rasasi]

This issue looks solved on latest vbox versions. I can't tell right know where the problem was since I didn't have much time for investigating, if anyone's curious just leave here a note or e-mail me.

I consider this issue closed.

Thanks.