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I recently updated to Ubuntu 20.04 (linux 5.4.0-31-generic) on three separate machines (One Ubuntu Mate, two Lubuntu) and my two Kobo ereaders are not recognised as devices. They are not even seen as drives when I do "lsusb". The reader itself "connects" to my PC, and is charging OK but Ubuntu does not seem to see it.

Since there is nothing for me to latch onto I am at a loss as to what to do. Any help would be appreciated.

Thanks, Neil

karlicoss
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Doktor Avalanche
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  • I've got same issue, my 20.04 machine won't detect Kobo as well (works on other 19.04 computer). Doesn't detect other USB devices either, seems similar to these issues https://askubuntu.com/questions/1234993/ubuntu-20-04-doesn-t-recognise-hard-drive https://askubuntu.com/questions/1242362/usb-detection-problem – karlicoss Jun 15 '20 at 08:59
  • upd: I tried installing tlp following this advice https://askubuntu.com/a/1236869/427470, and without doing anything else (didn't even tweak anything) USB devices including Kobo started working. I'm not sure if it's just a coincidence, or installing tlp adjusts some settings that fix it, but maybe it would help you too. – karlicoss Jun 17 '20 at 19:12
  • Could you run these on separate terminal and report output when you plug in Kobo: sudo udevadm monitor -u and journalctl --follow . Had you tried different USB cables? BTW, short ones are preferred. – user.dz Dec 22 '21 at 06:53

1 Answers1

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I had a similar issue with a kindle and Ubuntu 20.04. The kindle did show up as a device in the Disks app, but it was not mounted somehow. In the end I reset the kindle to factory settings and everything worked.

If you do not want to reset your device, maybe this question will give you some answers.

Roald
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