Why sometimes do I need to restart Calibre for it to recognize my Android device?

Geremia · Today, 12:20 AM

Sometimes I need to restart Calibre for it to recognize my device. Why is this?

KDE recognizes the device when I plug it in, and "Android File Transfer (MTP)" thinks Calibre is occupying the device when I try accessing it there; MTP can even kill the Calibre process. But Calibre itself doesn't recognize it until I restart Calibre.

I'm using Calibre 8.8.

cross-posted on Ebooks StackExchange

kovidgoyal · Today, 12:30 AM

On Linux only a single program can access MTP devices at a time You need to prevent your desktop environmnet from mounting the device then it will work normally in calibre.

Moonbase59 · Today, 03:21 AM

Exactly.

Fortunately, many file managers (like Nemo on my EndeavourOS/Cinnamon) have an option to disable automounting removable media, see screenshot. This works nicely here: The device shows up, the DE plays the "Connect" sound, but it doesn’t get automounted by the file manager and Calibre can do its work (Auto-connect, use, Eject device, etc.).

If you wish to use the device outside Calibre, you can normally mount/unmount it using the file manager.

If using gvfs (GNOME-based DEs), you can also disable this only for MTP: In /usr/share/gvfs/mounts/mtp.mount:

Code:

[Mount]
Type=mtp
Exec=/usr/lib/gvfsd-mtp
AutoMount=false

Since you’re using KDE, maybe Nautilus has an option like this, too, or you find something in the KDE settings.

See also: https://wiki.archlinux.org/title/Med...nsfer_Protocol

Quoth · Today, 08:28 AM

Before connecting an Android or other MTP device I go to Process list in System monitor and stop (not kill)
gvfs-mtp-volume-monitor

There is no way on Mate Desktop to otherwise stop an MTP device mounting.

Obviously that's only for Calibre or similar. If I want to to use a file manager, then nothing is done.

Today, 12:20 AM	#1
Geremia Addict Posts: 259 Karma: 100000 Join Date: Oct 2012 Device: Calibre	Why sometimes do I need to restart Calibre for it to recognize my Android device? Sometimes I need to restart Calibre for it to recognize my device. Why is this? KDE recognizes the device when I plug it in, and "Android File Transfer (MTP)" thinks Calibre is occupying the device when I try accessing it there; MTP can even kill the Calibre process. But Calibre itself doesn't recognize it until I restart Calibre. I'm using Calibre 8.8. cross-posted on Ebooks StackExchange Last edited by Geremia; Today at 12:29 AM.

Today, 03:21 AM	#3
Moonbase59 Addict Posts: 224 Karma: 1000244 Join Date: Oct 2021 Location: Germany Device: Tolino Vision 5, Tolino Tab 8", Pocketbook Era (16GB)	Exactly. Fortunately, many file managers (like Nemo on my EndeavourOS/Cinnamon) have an option to disable automounting removable media, see screenshot. This works nicely here: The device shows up, the DE plays the "Connect" sound, but it doesn’t get automounted by the file manager and Calibre can do its work (Auto-connect, use, Eject device, etc.). If you wish to use the device outside Calibre, you can normally mount/unmount it using the file manager. If using gvfs (GNOME-based DEs), you can also disable this only for MTP: In /usr/share/gvfs/mounts/mtp.mount: Code: [Mount] Type=mtp Exec=/usr/lib/gvfsd-mtp AutoMount=false Since you’re using KDE, maybe Nautilus has an option like this, too, or you find something in the KDE settings. See also: https://wiki.archlinux.org/title/Med...nsfer_Protocol Attached Thumbnails Last edited by Moonbase59; Today at 03:27 AM.

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Today, 12:30 AM	#2
kovidgoyal creator of calibre Posts: 45,427 Karma: 27757236 Join Date: Oct 2006 Location: Mumbai, India Device: Various	On Linux only a single program can access MTP devices at a time You need to prevent your desktop environmnet from mounting the device then it will work normally in calibre.

Today, 08:28 AM	#4
Quoth Still reading Posts: 14,303 Karma: 105299897 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	Before connecting an Android or other MTP device I go to Process list in System monitor and stop (not kill) gvfs-mtp-volume-monitor There is no way on Mate Desktop to otherwise stop an MTP device mounting. Obviously that's only for Calibre or similar. If I want to to use a file manager, then nothing is done.