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davidfor · 12-28-2017, 10:38 PM

Let me get this right:

- If you restart the device and the computer, you can plug the device in and copy as much to it as you want.
- When you eject and reconnect, you have a 50% chance of it failing when copying 300MB or so. And if it doesn't fail, it will the next time.
- And after this, the USB port doesn't work.

Does this mean if you only copy a small amount, say less than 50MB, it never fails? Or, might it be cumulative?

And what are you doing? I'm pretty sure you aren't using calibre. So, just copying books or other files to the device? Or are you updating the database. There are reports from calibre users that the connection seems to fail while reading and updating the database. I don't have a consistent feel for this other than it is more likely for USB3 connections.

Have you tried restarting the device between connections? Just wondering if this might reset something in the device that would prevent the problem. And to be fair, you would also need to try restarting the PC to see if it is something on it that is the cause. You have tried multiple PCs, but it is something that should be eliminated.

12-28-2017, 10:38 PM	#5
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	Let me get this right: - If you restart the device and the computer, you can plug the device in and copy as much to it as you want. - When you eject and reconnect, you have a 50% chance of it failing when copying 300MB or so. And if it doesn't fail, it will the next time. - And after this, the USB port doesn't work. Does this mean if you only copy a small amount, say less than 50MB, it never fails? Or, might it be cumulative? And what are you doing? I'm pretty sure you aren't using calibre. So, just copying books or other files to the device? Or are you updating the database. There are reports from calibre users that the connection seems to fail while reading and updating the database. I don't have a consistent feel for this other than it is more likely for USB3 connections. Have you tried restarting the device between connections? Just wondering if this might reset something in the device that would prevent the problem. And to be fair, you would also need to try restarting the PC to see if it is something on it that is the cause. You have tried multiple PCs, but it is something that should be eliminated.