Migration to Linux

[K8HW]

I have just switched to Linux and Calibre does not see my connected Tablet. Here is the info from debug:

Spoiler:

calibre 6.14 embedded-python: True
Linux-5.19.0-38-generic-x86_64-with-glibc2.35 Linux ('64bit', 'ELF')
('Linux', '5.19.0-38-generic', '#39~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 17 21:16:15 UTC 2')
Python 3.10.1
Interface language: None
Successfully initialized third party plugins: DeDRM (7, 1, 0) && Audit Log (1, 0, 19) && Barnes & Noble (1, 5, 0) && Count Pages (1, 13, 0) && Find Duplicates (1, 10, 7) && Goodreads (1, 7, 4) && Goodreads Sync (1, 16, 2) && Quality Check (1, 13, 4) && Reading List (1, 15, 1)
USB devices on system:
[['0xd8c', '0x12', '0x100', 'C-Media Electronics Inc.', 'USB Audio Device', ''],
['0x13d3', '0x3549', '0x0', 'Realtek', 'Bluetooth Radio', '00e04c000001'],
['0x24ae', '0x9db6', '0x110', 'BJX', '2.4G Mouse', ''],
['0x1a86', '0x55d2', '0x444', '', 'USB Dual_Serial', '535C005722'],
['0xc45',
'0x636b',
'0x100',
'Sonix Technology Co., Ltd.',
'USB 2.0 Camera',
'SN0001'],
['0x1b3f', '0x2008', '0x100', 'GeneralPlus', 'USB Audio Device', ''],
['0x4f9', '0x180', '0x100', '', '', '000D8J773562'],
['0x4e8', '0x6860', '0x400', 'SAMSUNG', 'SAMSUNG_Android', '5ad4972511569ac1']]

No disabled plugins
Looking for devices of type: MTP_DEVICE
MTP devices connected:
USBDevice(busnum=1, devnum=14, vendor_id=0x04e8, product_id=0x6860, bcd=0x0400, manufacturer=SAMSUNG, product=SAMSUNG_Android, serial=5ad4972511569ac1)

Trying to open: USBDevice(busnum=1, devnum=14, vendor_id=0x04e8, product_id=0x6860, bcd=0x0400, manufacturer=SAMSUNG, product=SAMSUNG_Android, serial=5ad4972511569ac1)
Opening device failed:
Traceback (most recent call last):
File "calibre/devices/mtp/unix/driver.py", line 214, in open
File "calibre/devices/mtp/base.py", line 24, in synchronizer
File "calibre/devices/mtp/unix/driver.py", line 166, in create_device
libmtp.MTPError: No raw devices found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre/devices/mtp/unix/driver.py", line 144, in debug_managed_device_detection
File "calibre/devices/mtp/driver.py", line 132, in open
File "calibre/devices/mtp/base.py", line 24, in synchronizer
File "calibre/devices/mtp/unix/driver.py", line 217, in open
calibre.devices.errors.OpenFailed: Failed to open USBDevice(busnum=1, devnum=14, vendor_id=0x04e8, product_id=0x6860, bcd=0x0400, manufacturer=SAMSUNG, product=SAMSUNG_Android, serial=5ad4972511569ac1): Error: No raw devices found


Looking for devices of type: SMART_DEVICE_APP
All IP addresses {'lo': [{'addr': '127.0.0.1', 'netmask': '255.0.0.0', 'peer': '127.0.0.1'}], 'wlo1': [{'addr': '192.168.1.67', 'netmask': '255.255.255.0', 'broadcast': '192.168.1.255'}], 'nordlynx': [{'addr': '10.5.0.2', 'netmask': '255.255.255.255', 'peer': '10.5.0.2'}]}
No device is connected

Looking for devices...
USBDevice(busnum=1, devnum=14, vendor_id=0x04e8, product_id=0x6860, bcd=0x0400, manufacturer=SAMSUNG, product=SAMSUNG_Android, serial=5ad4972511569ac1)
Detected possible device ANDROID

Devices possibly connected: Android driver,
Trying to open Android driver ... failed
Opening of the following devices failed
<calibre.devices.android.driver.ANDROID object at 0x7ff587918a30>
Traceback (most recent call last):
File "calibre/devices/usbms/device.py", line 713, in open
File "calibre/devices/usbms/device.py", line 577, in open_linux
calibre.devices.errors.DeviceError: Unable to detect the ANDROID disk drive. Either the device has already been ejected, or your kernel is exporting a deprecated version of SYSFS.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre/devices/__init__.py", line 163, in debug
File "calibre/devices/usbms/device.py", line 716, in open
File "calibre/devices/usbms/device.py", line 577, in open_linux
calibre.devices.errors.DeviceError: Unable to detect the ANDROID disk drive. Either the device has already been ejected, or your kernel is exporting a deprecated version of SYSFS.

Any help would be greatly appreciated. Thanks
Dave

[kovidgoyal]

On linux only one program at a time can access MTP devices. Get your filemanager/desktop environmnet to not auto mount hte device and it will work in calibre.

[Quoth]

MTP type USB on Linux only support one connection / application.
On some Linux or desktops you can disable automount, then Calibre can connect.
On some MTP android you can Eject/unmount on the desktop and then Calibre can connect.

I use Mate desktop on Mint, so before USB connection I go to to System Monitor and stop (not kill as that auto-respawns) Processes -> gvfs-mtp-volume-monitor, right click and Stop.

Because while disabling "automount" works in Cinnamon, it is ignored by Mint.

Then connect tablet/phone.
Calibre will connect.
After eject in Calibre and unpluging you can "continue" the stopped process if you need to use the file manager with an MTP device.