MobileRead Forums - View Single Post - calibre 'Not Responding' when connecting kobo libra

rmarhi · 07-10-2025, 01:31 PM

When connecting kobo libra via USB, Calibre appears to recognize the device - each of the following jobs is 'Finished':
Get Device Information
Set Library Information
Get list of bnooks on device

However the status in the lower left shows "Analyzing books on the device: 76% finished" and Calibre is frozen/hung.

I then kill the calibre process, eject the libra, and the device then displays the 'importing content' screen. It displays 6% complete for a few seconds and then opens up to the kobo home screen and seems to function correctly.

I hadn't connected the device for several months until the last few days.

Initially, the analyzing %age was 85 (or so). I started removing recently downloaded books and that went up to 96%. I then removed the PDFs on the device but the analyzing percentage dropped to 76%.

I also reviewed the configs of the plugins but I believe they are correct.

I have searched for ways to address this but I'm at a loss for what to do next, besides resetting the device. That is, obviously, not the best 'solution' in the context of my device data but also because I'd like to avoid this happening again.

Calibre 8.5
Windows 10 64 bit home edition
Libra software: 4.38.23171

FWIW, I upgraded to Calibre 8.5 and the new Kobo software as a way to resolve the problem but the behaviour is the same.

07-10-2025, 01:31 PM	#1
rmarhi Member Posts: 16 Karma: 10 Join Date: Jun 2018 Device: kobo libra	calibre 'Not Responding' when connecting kobo libra When connecting kobo libra via USB, Calibre appears to recognize the device - each of the following jobs is 'Finished': Get Device Information Set Library Information Get list of bnooks on device However the status in the lower left shows "Analyzing books on the device: 76% finished" and Calibre is frozen/hung. I then kill the calibre process, eject the libra, and the device then displays the 'importing content' screen. It displays 6% complete for a few seconds and then opens up to the kobo home screen and seems to function correctly. I hadn't connected the device for several months until the last few days. Initially, the analyzing %age was 85 (or so). I started removing recently downloaded books and that went up to 96%. I then removed the PDFs on the device but the analyzing percentage dropped to 76%. I also reviewed the configs of the plugins but I believe they are correct. I have searched for ways to address this but I'm at a loss for what to do next, besides resetting the device. That is, obviously, not the best 'solution' in the context of my device data but also because I'd like to avoid this happening again. Calibre 8.5 Windows 10 64 bit home edition Libra software: 4.38.23171 FWIW, I upgraded to Calibre 8.5 and the new Kobo software as a way to resolve the problem but the behaviour is the same.