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Originally Posted by kaufman
I then tried copying my whole folder from within calibre. It failed out after about 150 books with a disconnected message. I tried opening the files that had copied, and everything worked fine.
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So as before, calibre complained that the device went away, but the device was still doing stuff? Do you have an estimate for how long it took to send those 150 books?
Could you send me a CC debug log? There might be something in there that helps understand what is happening. Send it to cc_debug_logs at charles dot haleys dot org.
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If I do a couple of 100 files at a time, it works ok, but anything more then that fails after a while.
It should be noted that I have been able to copy my entire folder of several thousand books all at once under 4.3, so perhaps 4.4 is slowing things down.
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Hmmm...
I hadn't thought that there might be a 4.4 change that affects this. If so, it is going to be hard to find.
Did the tablet do anything while the copy was happening, for example shutting off the screen? I have some memory that 4.4 does more aggressive power management than 4.3. I wonder if it might be choosing to put CC to "sleep" under some conditions, which would stop it from talking to calibre. More research needed.
Just read some bug reports that say that KitKat can spontaneously decide to switch from WiFi to mobile networking then switch back. An HTC bug report says that connections can be unstable if the access point name (SSID) contains spaces or special characters. (!) If these are true then it explains CC's problems.
By any chance did you try sending the books to main memory? I wonder if the problem is KitKat or the SD card.
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Is increasing the timeout under Calibre a developer change or can I make this change in settings?
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No, these timeouts are hard coded into calibre and CC.