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Old 06-24-2024, 07:43 AM   #1
Loris
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Unhappy Kobo Clara 2E is not recognized by Calibre
good morning everyone. I have a problem with the Kobo Clara 2E e-book reader. Calibre has not detected it for some time. It used to connect without problems. The operating system is Linux Mint Cinnamon 21.3 and the Calibre version is 7.12. Can anyone help me? Thanks to anyone who can help me.
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Old 06-24-2024, 07:46 AM   #2
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Quote:
Originally Posted by Loris View Post
good morning everyone. I have a problem with the Kobo Clara 2E e-book reader. Calibre has not detected it for some time. It used to connect without problems. The operating system is Linux Mint Cinnamon 21.3 and the Calibre version is 7.12. Can anyone help me? Thanks to anyone who can help me.
Make sure you've downloaded calibre from the calibre site and not a repository. calibre from most repositories usually has something wrong with it.

https://calibre-ebook.com/download_linux
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Old 06-24-2024, 07:55 AM   #3
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Quote:
Originally Posted by Loris View Post
good morning everyone. I have a problem with the Kobo Clara 2E e-book reader. Calibre has not detected it for some time. It used to connect without problems. The operating system is Linux Mint Cinnamon 21.3 and the Calibre version is 7.12. Can anyone help me? Thanks to anyone who can help me.
I use Linux Mint 21.3 Cinnamon but I don't have a Kobo Clara 2E. The closest I can come is a Clara HD (which works fine). Does the Clara 2E show up on the Desktop?
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Old 06-24-2024, 07:58 AM   #4
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Quote:
Originally Posted by JSWolf View Post
Make sure you've downloaded calibre from the calibre site and not a repository. calibre from most repositories usually has something wrong with it.

https://calibre-ebook.com/download_linux
7.12 is the newest Calibre. The Calibre in Linux Mint 21's repository is still at 5.37. (Although 7.12 is available as a FlatPak in the Software Manager. I just go to the Calibre and paste the install command into a terminal when I want to update.)
Last edited by rcentros; 06-24-2024 at 09:37 AM.
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Old 06-25-2024, 03:01 AM   #5
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Quote:
Originally Posted by Loris View Post
good morning everyone. I have a problem with the Kobo Clara 2E e-book reader. Calibre has not detected it for some time. It used to connect without problems. The operating system is Linux Mint Cinnamon 21.3 and the Calibre version is 7.12. Can anyone help me? Thanks to anyone who can help me.
I'm a UNIX user/programmer from way back, so my first port of call when debugging is the command line. So, if there is a fancy GUI tool that will do the same, I don't know/care about it.

At a CLI prompt type

sudo tail -f /var/log/everything.log|tee /tmp/junk.txt

This should give something similar to the attached.

The two important lines are :

sd 2:0:0:0: [sda] Attached SCSI removable disk

which indicates the Linux has recognised the Clara and attached it as a USB device.

udisksd[20048]: Mounted /dev/sda (system) at /mnt/usb/kobo on behalf of uid 1000

which indicates that calibre has detected and mounted it.


NOTES

The -f option on tail means that log output will continue to be added until you hit CTRL-C.

The tee command splits the output and not only displays it on the screen but also writes it to a file, which I suggest you attach to a post or copy/paste it into a spoiler tag.

Spoiler:
Jun 18 15:14:03 Polgara kernel: usb 1-6: new high-speed USB device number 19 using xhci_hcd
Jun 18 15:14:03 Polgara kernel: usb 1-6: New USB device found, idVendor=2237, idProduct=4235, bcdDevice= 4.01
Jun 18 15:14:03 Polgara kernel: usb 1-6: New USB device strings: Mfr=3, Product=4, SerialNumber=5
Jun 18 15:14:03 Polgara kernel: usb 1-6: Product: eReader-4.38.21908
Jun 18 15:14:03 Polgara kernel: usb 1-6: Manufacturer: Kobo
Jun 18 15:14:03 Polgara kernel: usb 1-6: SerialNumber: N50636C318126
Jun 18 15:14:03 Polgara kernel: usb-storage 1-6:1.0: USB Mass Storage device detected
Jun 18 15:14:03 Polgara kernel: scsi host2: usb-storage 1-6:1.0
Jun 18 15:14:03 Polgara mtp-probe[27702]: checking bus 1, device 19: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-6"
Jun 18 15:14:03 Polgara mtp-probe[27702]: bus: 1, device: 19 was not an MTP device
Jun 18 15:14:03 Polgara mtp-probe[27703]: checking bus 1, device 19: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-6"
Jun 18 15:14:03 Polgara mtp-probe[27703]: bus: 1, device: 19 was not an MTP device
Jun 18 15:14:04 Polgara kernel: scsi 2:0:0:0: Direct-Access Linux File-Stor Gadget 0401 PQ: 0 ANSI: 2
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: Attached scsi generic sg0 type 0
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: Power-on or device reset occurred
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] 29633533 512-byte logical blocks: (15.2 GB/14.1 GiB)
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] Write Protect is off
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] Mode Sense: 0f 00 00 00
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Jun 18 15:14:04 Polgara kernel: sda:
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] Attached SCSI removable disk
Jun 18 15:14:09 Polgara udisksd[20048]: Mounted /dev/sda (system) at /mnt/usb/kobo on behalf of uid 1000
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Old 06-25-2024, 09:33 AM   #6
Loris
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Quote:
Originally Posted by JSWolf View Post
Make sure you've downloaded calibre from the calibre site and not a repository. calibre from most repositories usually has something wrong with it.

https://calibre-ebook.com/download_linux
I made it. But nothing to do.
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Old 06-25-2024, 09:36 AM   #7
Loris
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Quote:
Originally Posted by rcentros View Post
I use Linux Mint 21.3 Cinnamon but I don't have a Kobo Clara 2E. The closest I can come is a Clara HD (which works fine). Does the Clara 2E show up on the Desktop?
Yes I can see Kobo Clara on desktop and file manager Nemo...
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Old 06-25-2024, 09:48 AM   #8
Loris
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Posts: 5
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Quote:
Originally Posted by Ghostcat View Post
I'm a UNIX user/programmer from way back, so my first port of call when debugging is the command line. So, if there is a fancy GUI tool that will do the same, I don't know/care about it.

At a CLI prompt type

sudo tail -f /var/log/everything.log|tee /tmp/junk.txt

This should give something similar to the attached.

The two important lines are :

sd 2:0:0:0: [sda] Attached SCSI removable disk

which indicates the Linux has recognised the Clara and attached it as a USB device.

udisksd[20048]: Mounted /dev/sda (system) at /mnt/usb/kobo on behalf of uid 1000

which indicates that calibre has detected and mounted it.


NOTES

The -f option on tail means that log output will continue to be added until you hit CTRL-C.

The tee command splits the output and not only displays it on the screen but also writes it to a file, which I suggest you attach to a post or copy/paste it into a spoiler tag.

Spoiler:
Jun 18 15:14:03 Polgara kernel: usb 1-6: new high-speed USB device number 19 using xhci_hcd
Jun 18 15:14:03 Polgara kernel: usb 1-6: New USB device found, idVendor=2237, idProduct=4235, bcdDevice= 4.01
Jun 18 15:14:03 Polgara kernel: usb 1-6: New USB device strings: Mfr=3, Product=4, SerialNumber=5
Jun 18 15:14:03 Polgara kernel: usb 1-6: Product: eReader-4.38.21908
Jun 18 15:14:03 Polgara kernel: usb 1-6: Manufacturer: Kobo
Jun 18 15:14:03 Polgara kernel: usb 1-6: SerialNumber: N50636C318126
Jun 18 15:14:03 Polgara kernel: usb-storage 1-6:1.0: USB Mass Storage device detected
Jun 18 15:14:03 Polgara kernel: scsi host2: usb-storage 1-6:1.0
Jun 18 15:14:03 Polgara mtp-probe[27702]: checking bus 1, device 19: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-6"
Jun 18 15:14:03 Polgara mtp-probe[27702]: bus: 1, device: 19 was not an MTP device
Jun 18 15:14:03 Polgara mtp-probe[27703]: checking bus 1, device 19: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-6"
Jun 18 15:14:03 Polgara mtp-probe[27703]: bus: 1, device: 19 was not an MTP device
Jun 18 15:14:04 Polgara kernel: scsi 2:0:0:0: Direct-Access Linux File-Stor Gadget 0401 PQ: 0 ANSI: 2
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: Attached scsi generic sg0 type 0
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: Power-on or device reset occurred
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] 29633533 512-byte logical blocks: (15.2 GB/14.1 GiB)
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] Write Protect is off
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] Mode Sense: 0f 00 00 00
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Jun 18 15:14:04 Polgara kernel: sda:
Jun 18 15:14:04 Polgara kernel: sd 2:0:0:0: [sda] Attached SCSI removable disk
Jun 18 15:14:09 Polgara udisksd[20048]: Mounted /dev/sda (system) at /mnt/usb/kobo on behalf of uid 1000
Thanks for the detailed answer... however I tried to enter the command in gnome-terminal but the answer was: Impossible [...] nonexistent file or directory. And there I stopped. However I can say that Kobo appears in the file manager and I can browse it. Until a few months ago I had no problems and as soon as I inserted the USB cable from Kobo to Linux, Calibre opened automatically showing the connected device. Also in a laptop with the same operating system, Calibre detects Kobo immediately. I don't know...
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Old 06-25-2024, 10:12 AM   #9
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Any chance that your Clara 2E is in calibre's Ignored devices list? ( Preferences => Ignored devices).
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