Thread: Mac M1: Kobo Aura H20 looses connection
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Old 10-06-2021, 10:53 PM   #3
davidfor
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Posts: 24,905
Karma: 47303824
Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by KoopaOne View Post
Hi Guys,
I am running a new Macbook Pro M1 since last November. The last few months it worked as a charm using an USB2-Hub.
Then suddenly i had a corrupt db on the Kobo (which i never ever had before, not on windows, not on linux).
I did not manage to get it to work again, so i factory resetted the H20.
Now it runs again, but whenever i transfer books to the Kobo, it looses connection to the Kobo. Sometimes on the first book, sometimes on the 5th, but i didn't manage to transfer more than 10 books i a single command.
Since i have more than 1500 books to transfer due to the factory reset mentioned, this is a bit of a hassle.

I am running Calibre 5.28 with Kobo Extended Plugin
Kobo is on latest firmware

If i am not transferring books, i can keep the kobo connected, it never looses the connection - the problems only start when transferring books. Any ideas?

The error is always:

Code:
'OEBPS/Text/Titlepage.xhtml'

Traceback (most recent call last):
  File "calibre/gui2/device.py", line 89, in run
  File "calibre/gui2/device.py", line 595, in _upload_books
  File "calibre_plugins.kobotouch_extended.device.driver", line 400, in upload_books
    return super(KOBOTOUCHEXTENDED, self).upload_books(
  File "calibre/devices/kobo/driver.py", line 2137, in upload_books
  File "calibre_plugins.kobotouch_extended.device.driver", line 211, in _modify_epub
    container = KEPubContainer(infile, common.log, self.clean_markup)
  File "calibre_plugins.kobotouch_extended.container", line 119, in __init__
    self.__run_async_over_content(self.forced_cleanup)
  File "calibre_plugins.kobotouch_extended.container", line 375, in __run_async_over_content
    self.__run_async(func, names)
  File "calibre_plugins.kobotouch_extended.container", line 368, in __run_async
    future.result(timeout=10)
  File "concurrent/futures/_base.py", line 432, in result
  File "concurrent/futures/_base.py", line 388, in __get_result
  File "concurrent/futures/thread.py", line 57, in run
  File "calibre_plugins.kobotouch_extended.container", line 310, in forced_cleanup
    self.flush_cache()
  File "calibre_plugins.kobotouch_extended.container", line 170, in flush_cache
    self.__run_async(self.__flush_cache_impl, args)
  File "calibre_plugins.kobotouch_extended.container", line 368, in __run_async
    future.result(timeout=10)
  File "concurrent/futures/_base.py", line 432, in result
  File "concurrent/futures/_base.py", line 388, in __get_result
  File "concurrent/futures/thread.py", line 57, in run
  File "calibre_plugins.kobotouch_extended.container", line 174, in __flush_cache_impl
    self.commit_item(name, keep_parsed=True)
  File "calibre/ebooks/oeb/polish/container.py", line 1025, in commit_item
  File "calibre/ebooks/oeb/polish/container.py", line 1011, in serialize_item
KeyError: 'OEBPS/Text/Titlepage.xhtml'
Are you saying that when you see that error, the device gets disconnected from you MAC? Because while that error is during the send-to-device, it is happening while the KoboTouchExtended driver is doing the work to transform the epub to kepub. I would expect that to be an error because the temporary files have been cleaned up by some process or something is blocking the updates.

Do you have the latest version of the KoboTouchExtended driver installed? This is version 3.5.3. Have you tried going back to the KoboTouch driver? This won't convert the book to kepub, but, it will show if the issue is putting books onto the device or something else. You can also install the Kepub Output plugin and convert the books to kepub before sending them. That uses the same code as the extended driver, so could show the same error as above. And if it does, would point to it not being a device related issue.

Also, what firmware version is the device on? The latest, 4.28, has some updates to improve the stability of USB connection. This mainly affects the newer devices, but, it also is for working with newer MACs. It can reduce the need for the hub.

The other thing that can help is to run calibre in debug mode and post the debug log. There might be something in there that points to the issue.
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