Calibre not detecting Xiaomi Moaan inkPalm 5 mini

[cartz]

I'm running the latest Calibre on Fedora 40. The InkPalm mini is connected in USB MTP mode. It does get auto mounted by the files system but so I dismount it immediately but Calibre still doesn't recognise it.

The output from the Device Detection debug is:

Spoiler:

calibre 7.10 embedded-python: True
Linux-6.8.9-300.fc40.x86_64-x86_64-with-glibc2.39 Linux ('64bit', 'ELF')
('Linux', '6.8.9-300.fc40.x86_64', '#1 SMP PREEMPT_DYNAMIC Thu May 2 18:59:06 UTC 2024')
Python 3.11.5
Interface language: None
EXE path: /opt/calibre/bin/calibre
USB devices on system:
[['0x1a86', '0x7523', '0x264', '', 'USB Serial', ''],
['0x8087', '0xa2b', '0x10', '', '', ''],
['0x416', '0x5020', '0x200', 'ONYX', 'BOOX MIRA133', '658A10BA0000'],
['0x1f3a', '0x1006', '0x440', 'Allwinner', 'EPD105', 'AA002910A2360800365'],
['0x27c0',
'0x858',
'0x112',
'WingCoolTouch',
'WingCoolTouch',
'9LQ0172005164'],
['0x5ac', '0x24f', '0x113', 'Keychron', 'Keychron K2', ''],
['0x17ef', '0x608d', '0x100', 'PixArt', 'Lenovo USB Optical Mouse', '']]

No disabled plugins
Looking for devices of type: MTP_DEVICE
MTP devices connected:
USBDevice(busnum=1, devnum=14, vendor_id=0x1f3a, product_id=0x1006, bcd=0x0440, manufacturer=Allwinner, product=EPD105, serial=AA002910A2360800365)

Trying to open: USBDevice(busnum=1, devnum=14, vendor_id=0x1f3a, product_id=0x1006, bcd=0x0440, manufacturer=Allwinner, product=EPD105, serial=AA002910A2360800365)
Opening device failed:
Traceback (most recent call last):
File "calibre/devices/mtp/unix/driver.py", line 218, in open
File "calibre/devices/mtp/base.py", line 24, in synchronizer
File "calibre/devices/mtp/unix/driver.py", line 170, in create_device
libmtp.MTPError: Unable to open MTP device with busnum=1 and devnum=14, tried 1 such devices

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre/devices/mtp/unix/driver.py", line 148, in debug_managed_device_detection
File "calibre/devices/mtp/driver.py", line 138, in open
File "calibre/devices/mtp/base.py", line 24, in synchronizer
File "calibre/devices/mtp/unix/driver.py", line 221, in open
calibre.devices.errors.OpenFailed: Failed to open USBDevice(busnum=1, devnum=14, vendor_id=0x1f3a, product_id=0x1006, bcd=0x0440, manufacturer=Allwinner, product=EPD105, serial=AA002910A2360800365): Error: Unable to open MTP device with busnum=1 and devnum=14, tried 1 such devices


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'}], 'wlp2s0': [{'addr': '192.168.0.159', 'netmask': '255.255.255.0', 'broadcast': '192.168.0.255'}]}
No device is connected

Looking for devices...

Devices possibly connected: None


The InkPalm mini is being detected (EPD105) but for some reason it is not connecting.

Any help much appreciated.

[mbovenka]

IIRC, on Linux, only one application can have an MTP device open. Is your file manager grabbing it?

[Quoth]

I pause (Stop, not kill) the gvfs-mtp-volume-monitor BEFORE connecting, because while you can stop the filemanager in Cinnamon grabbing it, that setting is ignored on Linux Mint with caja.

Also some Android gadgets let Calibre connect after you "un mount" on desktop and some don't re-connect withou cable removed and re-inserted.

So I "stop" the process in System Monitor GUI that's a right click in fron of window list. Scroll down and rightclick on the process.
"Continue" it after eject and cable disconnect.
Killing it doesn't work as it auto respawns like monsters in a game.

[Quoth]

Originally Posted by mbovenka

IIRC, on Linux, only one application can have an MTP device open. Is your file manager grabbing it?

True on MacOS too. Windows "cheats" by having only a single process connect that then simulates a file interface that multiplexes I/O. They developed it as an extension to PTP to manage DRM encumbered files for the Zune. Android adopted it at 4.0

[cartz]

Originally Posted by Quoth

I pause (Stop, not kill) the gvfs-mtp-volume-monitor BEFORE connecting

Brilliant. That solved it. Thanks.