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that helps
you are not the only one to report issues using the wired interface
i believe calibre puts 2 files onto the device, for storing a record of transfers. Deleting them & having it treat tablet as a new device may help- it will do a long initial scan then recreate them [ I dont have those file names or locations to hand but they probably have the word calibre in them
the other suggestions are also all valid. including adding google services to get more options
probably you have 2 separate issues - a flakey usb connection ( which you could bypass by using the calibre companion wireless app instead), and a separate issue with indexing and history which is not a calibre issue, its is mol likley otehr corrupt resports on the device e.g. in the relevant app data.
try the soft reset and clear app data / caches and see if that helps
FWIW, usual usb troubleshooting is try different cables, different USB ports on PC, or try via a USB hub. Wireless connections may be much less troublesome
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