error connecting with device

jszentes · 10-18-2015, 12:27 PM

I have been unable to connect to my Nexus 9 since the Calibre 2.40 release. It was working prior to that. My old Kindle 2 device still works however.

error indicates it could not upload driveinfo.calibre, yet the file does exist with the current date/time on my device. If I delete the file from my device and attempt to connect again, calibre starts using a significant amount of cpu usage (16%) and the memory usage grows (1Gig, 2Gig, 3Gig, ...) until a crash occurs.

OS: Kubuntu Linux

calibre, version 2.41.0
ERROR: Error: Error communicating with device

Failed to upload file named: driveinfo.calibre to (u'Internal storage',): 2:PTP Layer error 2002: send_file_object_info(): Could not send object info.
2:Error 2002: PTP: General Error

Traceback (most recent call last):
File "site-packages/calibre/gui2/device.py", line 87, in run
File "site-packages/calibre/gui2/device.py", line 503, in _books
File "site-packages/calibre/devices/mtp/driver.py", line 208, in books
File "site-packages/calibre/devices/mtp/driver.py", line 180, in get_driveinfo
File "site-packages/calibre/devices/mtp/driver.py", line 170, in _update_drive_info
File "site-packages/calibre/devices/mtp/base.py", line 24, in synchronizer
File "site-packages/calibre/devices/mtp/unix/driver.py", line 375, in put_file
DeviceError: Failed to upload file named: driveinfo.calibre to (u'Internal storage',): 2:PTP Layer error 2002: send_file_object_info(): Could not send object info.
2:Error 2002: PTP: General Error

kovidgoyal · 10-18-2015, 01:19 PM

That's an error writing to a file on the device, try rebooting your device, and also make sure it is not screen locked.

jszentes · 10-22-2015, 05:39 PM

It still does not work. There are 2 failure modes

1. Manually delete driveinfo.calibre from device. Calibre connects to device but then suffers from a memory leak which eventually consumes all system memory before crashing. The Calibre Jobs window shows it is "Reading ebook metadata" from the device.
Incidentally a deviceinfo.calibre file is created on the device.

2. Connect to device with deviceinfo.calibre file. This fails with the error I previosuly listed about not being able to write the deviceinfo.calibre file. Which is true because the timestamp of the file in the device is not updated.

All this was done while the device screen was not locked.

I should also note that I have no problems reading/writing files on the device using the pcs' file manager.

kovidgoyal · 10-22-2015, 10:21 PM

Delete the deviceinfo file manually or reset the device. There were no changes to device interaction in 2.40 (2.41 includes an updated version of libmtp). But, feel free to downgrade to a previous calibre release if you like instructions are on the calibre download page, although I highly doubt that will make a difference.

10-18-2015, 12:27 PM	#1
jszentes Junior Member Posts: 2 Karma: 10 Join Date: Oct 2015 Device: Nexus 9	error connecting with device I have been unable to connect to my Nexus 9 since the Calibre 2.40 release. It was working prior to that. My old Kindle 2 device still works however. error indicates it could not upload driveinfo.calibre, yet the file does exist with the current date/time on my device. If I delete the file from my device and attempt to connect again, calibre starts using a significant amount of cpu usage (16%) and the memory usage grows (1Gig, 2Gig, 3Gig, ...) until a crash occurs. OS: Kubuntu Linux calibre, version 2.41.0 ERROR: Error: Error communicating with device Failed to upload file named: driveinfo.calibre to (u'Internal storage',): 2:PTP Layer error 2002: send_file_object_info(): Could not send object info. 2:Error 2002: PTP: General Error Traceback (most recent call last): File "site-packages/calibre/gui2/device.py", line 87, in run File "site-packages/calibre/gui2/device.py", line 503, in _books File "site-packages/calibre/devices/mtp/driver.py", line 208, in books File "site-packages/calibre/devices/mtp/driver.py", line 180, in get_driveinfo File "site-packages/calibre/devices/mtp/driver.py", line 170, in _update_drive_info File "site-packages/calibre/devices/mtp/base.py", line 24, in synchronizer File "site-packages/calibre/devices/mtp/unix/driver.py", line 375, in put_file DeviceError: Failed to upload file named: driveinfo.calibre to (u'Internal storage',): 2:PTP Layer error 2002: send_file_object_info(): Could not send object info. 2:Error 2002: PTP: General Error

10-22-2015, 05:39 PM	#3
jszentes Junior Member Posts: 2 Karma: 10 Join Date: Oct 2015 Device: Nexus 9	No joy It still does not work. There are 2 failure modes 1. Manually delete driveinfo.calibre from device. Calibre connects to device but then suffers from a memory leak which eventually consumes all system memory before crashing. The Calibre Jobs window shows it is "Reading ebook metadata" from the device. Incidentally a deviceinfo.calibre file is created on the device. 2. Connect to device with deviceinfo.calibre file. This fails with the error I previosuly listed about not being able to write the deviceinfo.calibre file. Which is true because the timestamp of the file in the device is not updated. All this was done while the device screen was not locked. I should also note that I have no problems reading/writing files on the device using the pcs' file manager. Last edited by jszentes; 10-22-2015 at 05:41 PM. Reason: added note

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10-18-2015, 01:19 PM	#2
kovidgoyal creator of calibre Posts: 45,331 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	That's an error writing to a file on the device, try rebooting your device, and also make sure it is not screen locked.

10-22-2015, 10:21 PM	#4
kovidgoyal creator of calibre Posts: 45,331 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Delete the deviceinfo file manually or reset the device. There were no changes to device interaction in 2.40 (2.41 includes an updated version of libmtp). But, feel free to downgrade to a previous calibre release if you like instructions are on the calibre download page, although I highly doubt that will make a difference.

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