The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 1 year ago. Active 4 months ago. Viewed 13k times. Calibre stopped working recently. Tried uninstalling and reinstalling. I'm on version Ubuntu I made sure that my software in general is up to date also. Improve this question. From what I can see, Calibre 4.
Calibre released version 5 for Python 3 which I wish was in the repos, but you can install it from calibre-ebook. Terrance that did it thanks. Please make it an answer so I can mark it accordingly — rory. Add a comment. Active Oldest Votes. I installed a fresh version of Calibre Portable 3. Started with "--ignore-plugins", opened the same big library, does NOT hang. Again, this only happens with 3. A completely naked version of Calibre portable 3. I am almost convinced that it has to do with the split library view introduced in 3.
As far as I'm concerned this is still in progress, untill all new versions of calibre are working again with big libraries as in version 3. And today version 3. I tried the portable version completely untouched with my large books at the moment of writing library. It hangs after a while for a minute, and again, and again I had the same problem. I completely removed the entire program including the directory, plug in, etc.
After I installed 3. Unfortunately, I was optimistic too soon. If you're opening a large capacity 5M , the program freezes. I have about 10 libraries and only the biggest is giving me troubles.
I noticed that, in my case, it is not the size of the library that gives the problem, but the number of books in it. For instance: I have a library with mainly PDF. No troubles with this librarie at all. Another library, books, mainly epub, about 7GB, also no trouble at all. But my main librarie, books, most epub, The newer versions I test as distributed by Calibre, nothing altered or added; I test mainly with the portable version. All programs and libraries are on a SSD.
Fast enough I would think. They changed someting with the library handling? As for now I can use 3. And my version of 3. Today Calibre 3. That is still NOT working with very large libraries. Smaller libraries are no problem at all Although it is confirmed nobody seems to care. Since 3. But suggesting that may have any connection. All versions of Calibre work fine now. I am home again and found your mail. Thanks for letting me know your solution.
But maybe I find something, and if not; I can use the last working one or change accounts to work with Calibre Bug description: I tried both w32 and w64 version on W10 v, fully up to date. Today I got a upgrade to windows I had a little hope that this might solve this still existing problem. Trouble enough becouse after the upgrade windows crashed over asmtxhci.
But Calibre could not care less; still hangs…………. The fact that you hate to hear that is something wrong does not make this invalid. I had confirmation from exactly the same problem from several people, both here and using mail.
I wonder why people hesitate to react here, any ideas? I have! It is a facy that after 3. Thanks for all the input everyone. I did a search of the forum before I posted and saw several others had mentioned it working well on their W10, so I figured it must be a software or driver conflict. Thanks theducks for the FAQ I didn't realize there was a list of known conflicts like that, but it does seem to confirm what all of you are saying - likely just one piece of software causing the conflict.
I have been using the Windows 10 imaging backup software - works great. I haven't made a recent backup though, so thanks for the reminder, haha! Anyway, when I get a bit of time to test, I'll do the whole turning off programs one-by-one thing maybe try the safe mode first All in all, it shouldn't take too long, because especially if I'm editing an ebook, it seems to always freeze within 5 minutes each time.
It's just been really annoying having to remember to save so frequently. Thanks BetterRed I had no idea that was in msconfig. Is it new to Windows 10?
Or maybe I only just ever used it for controlling startup programs in the past. Originally Posted by madagascaradam. This sounds similar to my issue in windows 7 also bit.
I just posted in this same Devices sub-forum, and the thread is titled "Calibre-parallel. Originally Posted by SandFish. BetterRed, I'm not going to forget your kind request. The first step to using an Android device is installing an e-book reading application on it.
Simply plug your device into the computer with a USB cable. Note that on macOS and Linux only a single program can connect to an Android device at a time, so make sure the device is not opened in the OS File manager, or the Android File Transfer utility, etc. With newer Android devices, you might have to jump through a few hoops to get the connection working, as Google really does not want you to be independent of its cloud. First, unlock the screen before plugging in the USB cable.
When you plugin in the USB cable you will get a popup notification. You may need to restart calibre at this point in order for your device to be recognized. Finally, you might get a popup on the device every time calibre or the operating system actually tries to connect to it, asking for permission, tap OK.
With the Kindle Fire 8 or newer there is an icon that shows up when the USB cable is plugged in, showing that the device is charging. Tap that and switch the device to data transfer mode, and then start calibre, it should then be detected. The easiest way to transfer books wirelessly to your Android device is to use the Calibre Companion Android app. This app allows calibre to connect to your Android device wirelessly, just as though you plugged in the device with a USB cable.
You can browse your calibre collection on your Android device by using the calibre Content server, which makes your collection available over the net. You can now browse your book collection and download books from calibre to your device to open with whatever e-book reading software you have on your Android device.
Calibre Companion and many reading apps support browsing the calibre library directly. You can now browse the calibre library and download directly into the reading software. See The calibre Content server for details. In that case, change the port in the calibre Preferences to On some operating systems, you may not be able to run the server on a port number less than because of security settings.
In this case the simplest solution is to adjust your router to forward requests on port 80 to port Also some devices do not have browsers advanced enough to run the app-like interface used by the Content server. Because of the large amount of spam in email, sending email can be tricky, as different mail servers use different strategies to block email. The most common problem is if you are sending email directly without a mail relay in calibre.
Many servers for example, Amazon block email that does not come from a well known relay. The most robust way to setup email sending in calibre is to do the following:. If you are sending to your Kindle, remember to update the email preferences on your Amazon Kindle page to allow email sent from your GMX email address. Finally, Amazon recently started sending confirmation emails that you have to click on back to your GMX account before the book is actually delivered.
They prefer you use Gmail to avoid the confirmation emails. See the note below for setting up Gmail to work with calibre. Even after doing this, you may have problems. One common source of problems is that some poorly designed antivirus programs block calibre from opening a connection to send email. Try adding an exclusion for calibre in your antivirus program. So, when using these services to send mail calibre automatically restricts itself to sending one book every five minutes.
Google recently deliberately broke their email sending protocol SMTP support in an attempt to force everyone to use their web interface so they can show you more ads. They are trying to claim that SMTP is insecure, that is incorrect and simply an excuse. If you have trouble with Gmail you will need to setup an app password.
Use this app password as the password for Gmail in the calibre settings. If you are concerned about giving calibre access to your email account, simply create a new free email account with GMX or Hotmail and use it only for calibre.
Linux kernels mount devices read-only when their filesystems have errors. You can repair the filesystem with:. Note that in the case of the Kindle, there is a way to manipulate collections via USB, but it requires that the Kindle be rebooted every time it is disconnected from the computer, for the changes to the collections to be recognized. As such, it is unlikely that any calibre developers will ever feel motivated enough to support it. There is however, a calibre plugin that allows you to create collections on your Kindle from the calibre metadata.
It is available from here. Amazon have removed the ability to manipulate collections completely in their newer models, like the Kindle Touch and Kindle Fire, making even the above plugin useless, unless you root your Kindle and install custom firmware.
The Kobo has very buggy firmware. Connecting to it has been known to fail at random. If you are getting an error when connecting to your touch with calibre try the following, each of which has solved the problem for some calibre users. Log out of the Kobo and log in again, this causes it to rebuild the database, fixing corrupted database errors. Try resetting the Kobo sometimes this cures the problem for a little while, but then it re-appears, in which case you have to reset again and again.
Try only putting one or two books onto the Kobo at a time and do not keep large collections on the Kobo. This happens because of an Amazon bug. They try to download a cover for the book from their servers and when that fails, they replace the existing cover that calibre created with a generic cover.
For details see this forum thread. As of version 4. So in order to see the covers on your Kindle, you have to:. Note that this workaround only works for books sent with calibre 4. I encourage you to contact Amazon customer support and complain loudly about this bug.
Maybe Amazon will listen. If the workaround is not working for you make sure you Kindle firmware is at least version 5. Books sent to the Kindle only show up on the Kindle after they have been indexed by the Kindle. This can take some time. If the book still does not show up after some time, then it is likely that the Kindle indexer crashed.
Sometimes a particular book can cause the indexer to crash. Unfortunately, Amazon has not provided any way to deduce which book is causing a crash on the Kindle. Your only recourse is to either reset the Kindle, or delete all files from its memory using Windows Explorer or whatever file manager you use and then send the books to it again, one by one, until you discover the problem book.
This will most likely take care of the problem. Where are the book files stored? How does calibre manage author names and sorting? How do I move my calibre data from one computer to another? The list of books in calibre is blank! When you first run calibre, it will ask you for a folder in which to store your books. Whenever you add a book to calibre, it will copy the book into that folder.
Books in the folder are nicely arranged into sub-folders by Author and Title. If you want to add a file associated to a particular book, use the top right area of Edit metadata dialog to do so. Metadata about the books is stored in the file metadata. This file is a sqlite database.
When backing up your library make sure you copy the entire folder and all its sub-folders. The library folder and all its contents make up what is called a calibre library. You can have multiple such libraries. To manage the libraries, click the calibre icon on the toolbar. You can copy or move books between different libraries once you have more than one library setup by right clicking on a book and selecting the Copy to library action.
Author names are complex, especially across cultures, see this note for some of the complexities. The first thing to understand is that books and authors are separate entities in calibre. A book can have more than one author, and an author can have more than one book. You can manage the authors of a book by the edit metadata dialog. You can manage individual authors by right clicking on the author in the Tag browser on the left of the main calibre window and selecting Manage authors.
Using this dialog you can change the name of an author and also how that name is sorted. This will automatically change the name of the author in all the books of that author. When a new author is added to calibre this happens whenever a book by a new author is added , calibre automatically computes a sort string for both the book and the author. Authors in the Tag browser are sorted by the sort value for the authors. Remember that this is different from the Author sort field for a book.
By default, this sort algorithm assumes that the author name is in First name Last name format and generates a Last name, First name sort value. You can force calibre to recalculate the author sort values for every author by right clicking on any author and selecting Manage authors , then pushing the Recalculate all author sort values button.
You can force calibre to recalculate the author sort values for all books by using the bulk metadata edit dialog select all books and click edit metadata, check the Automatically set author sort checkbox, then press OK. When recalculating the author sort values for books, calibre uses the author sort values for each individual author. This is useful when dealing with names that calibre will not get right, such as complex multi-part names like Miguel de Cervantes Saavedra or when dealing with Asian names like Sun Tzu.
With all this flexibility, it is possible to have calibre manage your author names however you like. For example, one common request is to have calibre display author names LN, FN. To do this, and if the note below does not apply to you, then:. After you have changed all the authors, press the Recalculate all author sort values button. Press OK, at which point calibre will change the authors in all your books.
This can take a while. Open the Manage authors dialog. Press the copy all author sort values to author button. Check through the authors to be sure you are happy.
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