[davidfor]

Originally Posted by incumbent

I have a koboExtStorage directory on my SD card and a metadata.calibre and a driveinfo.calibre file on the SD card as well.

My main storage (internal) has a "koboExtStorage" directory, and contains a metadata.calibre, and a driveinfo.calibre file as well.

A "koboExtStorage" directory in the main memory is wrong. It is only supposed to get created on the external card. The other files are created by calibre to help with handling the device and books. What is in the driveinfo.calibre that is on the main memory.

Anything is possible. Before I do that, here's some debug output (the tl;dr version):

Job: 1 Get device information started
DeviceJob: 1 Get device information done, calling callback
2015-11-16 23:14:00.539 Calibre[90009:3928351] deliverNotificationWithTitle()
DeviceJob: 1 Get device information callback returned
Job: 2 Set library information started
DeviceJob: 2 Set library information done, calling callback
DeviceJob: 2 Set library information callback returned
Job: 3 Get list of books on device started
DEBUG:    0.0 KoboTouch:books - oncard='None'
DEBUG:    0.0 KoboTouch:books - oncard='None', prefix='/Volumes/KOBO16/'
DEBUG:    0.0 Kobo device: Kobo Aura HD
DEBUG:    0.0 Version of driver: (2, 5, 3) Has kepubs: True
DEBUG:    0.0 Version of firmware: (0, 0, 0) Has kepubs: True
DEBUG:    0.0 Firmware supports cover image tree: False
DEBUG:    0.0 KoboTouch:books - opts.extra_customization= [u'#koboshelves', True, True, True, True, True, False, True, True, True, False, True, u'', True, False, True, False, False, False, False, u'', False, False]
DEBUG:    0.0 KoboTouch:books - prefs['manage_device_metadata']= on_connect
DEBUG:    0.0 KoboTouch:books - set_debugging_title to ''
DEBUG:    0.0 KoboTouch:books - length bl=0
* Notification delivered.
Job: 1 Get device information finished
No details available.
Job: 2 Set library information finished
No details available.
DEBUG:   13.7 KoboTouch:books - length bl after sync=1586
DeviceJob: 3 Get list of books on device done, calling callback
unable to open database file

And now, after I whack the two calibre files from the SD card it still doesn't fly:

Job: 1 Get device information started
DeviceJob: 1 Get device information done, calling callback
2015-11-16 23:26:20.881 Calibre[90786:3946744] deliverNotificationWithTitle()
DeviceJob: 1 Get device information callback returned
Job: 2 Set library information started
DeviceJob: 2 Set library information done, calling callback
DeviceJob: 2 Set library information callback returned
Job: 3 Get list of books on device started
DEBUG:    0.0 KoboTouch:books - oncard='None'
DEBUG:    0.0 KoboTouch:books - oncard='None', prefix='/Volumes/KOBO16/'
DEBUG:    0.0 Kobo device: Kobo Aura HD
DEBUG:    0.0 Version of driver: (2, 5, 3) Has kepubs: True
DEBUG:    0.0 Version of firmware: (0, 0, 0) Has kepubs: True
DEBUG:    0.0 Firmware supports cover image tree: False
DEBUG:    0.0 KoboTouch:books - opts.extra_customization= [u'#koboshelves', True, True, True, True, True, False, True, True, True, False, True, u'', True, False, True, False, False, False, False, u'', False, False]
DEBUG:    0.0 KoboTouch:books - prefs['manage_device_metadata']= on_connect
DEBUG:    0.0 KoboTouch:books - set_debugging_title to ''
DEBUG:    0.0 KoboTouch:books - length bl=0
DEBUG:    0.0 KoboTouch:books - length bl after sync=0
DeviceJob: 3 Get list of books on device done, calling callback
* Notification delivered.
unable to open database file

I don't immediately see anything. Can I have the complete log?

For whatever reason, a combination of running the desktop Kobo application, reboot/logout or some other shenanigans influences the outcome. Sometimes it works, sometimes it doesn't. It isn't 100% reproducible until it happens once, then I can reliably replicate it until I can't.

When calibre stops seeing the database, does the Kobo desktop work properly?