Quote:
Originally Posted by kovidgoyal
Once again
On linux MTP devices can only be accessed by a single program at a time. You need to find whatever in your OS is claiming the tablet automatically (most likely your desktop shell/file manager) and disable it.
The relevant line in the log is:
ignoring libusb_claim_interface() = -6PTP_ERROR_IO: failed to open session, trying again after resetting USB interface
This has nothing to do with calibre, everything to do with your OS. I have no idea how to find what is claiimng the device on your OS, like I said, I stopped using linux desktop environments years ago. You will have to ask about that in the support forums for whatever desktop environment you are using.
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If something unrelated to Calibre is claiming the device, why are only the marshmallow devices affected?
I've been using Linux Mint 17.3 all year. Until February, I used an Android tablet which ran Lollipop. This worked perfectly. Later I started using a phone and tablet that use Marshmallow. These too worked perfectly. I'm not sure when exactly it stopped working, but it was after some Calibre update. Yet you insist the OS which again, works just fine with other devices and worked with this device in the past, is the sole issue. Whatever. Thanks for being so condescending.