calibre 1.0 and nexus 4 on ubuntu 12.10: MTPError

[rodvp]

there seems to be some improvement with the recognition of the nexus 4 with the latest release of calibre (1.0) - at least now it sees the device, but it's still not working properly. i'm getting the following error message:

Device 0 (VID=18d1 and PID=4ee2) is a Google Inc (for LG Electronics/Samsung) Nexus 4/10 (MTP+ADB).
Android device detected, assigning default bug flags
Error while trying to open MTPDevice(busnum=1, devnum=4, vendor_id=6353, product_id=20194, bcd=552, serial=u'0071129a598f27aa', manufacturer=u'LGE', product=u'Nexus 4') (Driver: <calibre.devices.mtp.driver.MTP_DEVICE object at 0x2408590>)
Traceback (most recent call last):
File "site-packages/calibre/gui2/device.py", line 276, in detect_device
File "site-packages/calibre/devices/mtp/driver.py", line 109, in open
File "site-packages/calibre/devices/mtp/base.py", line 24, in synchronizer
File "site-packages/calibre/devices/mtp/unix/driver.py", line 193, in open
MTPError: The device has no storage information.

this is with a ubuntu 12.10, and android 4.3. can connect to the device via adb without issue.

has anyone been able to make it work?

[rodvp]

if you unlock the phone, this error message goes away, and the procedure works.