Please help me debug problem with Calibre crashing when downloading metadata.

kacir · 09-10-2011, 03:43 PM

A few days ago I succeeded in running my own, a little bit patched version of Calibre. Now, I would like to use it to hunt down an annoying problem I experience for several months. The problem is also present in in canonical binary distribution I have been getting every Friday.

Sometimes, when I press Ctrl+D and download metadata and/or covers, Calibre simply quietly dies. With "Segmentation fault" error message if you have started it from console. Sometimes it happens on second or third attempt to download the medatada, sometimes I download metadata for dozens for books without problem.

What steps can I do to try to find the root of the problem? I have tried running calibre-debug --gui, but there is no better error message.

I am running on Mint Linux (an Ubuntu clone), newest version.

EDIT: If I restart the program and try downloading metadata again, Calibre doesn't crash on the same books.

kovidgoyal · 09-10-2011, 05:17 PM

Crashes typically happen at the level of C code in libraries calibre uses not calibre code, so they aren't so easy to debug. To start with try running calibre under gdb and get a back trace.

09-10-2011, 03:43 PM	#1
kacir Wizard Posts: 3,450 Karma: 10484861 Join Date: May 2006 Device: PocketBook 360, before it was Sony Reader, cassiopeia A-20	Please help me debug problem with Calibre crashing when downloading metadata. A few days ago I succeeded in running my own, a little bit patched version of Calibre. Now, I would like to use it to hunt down an annoying problem I experience for several months. The problem is also present in in canonical binary distribution I have been getting every Friday. Sometimes, when I press Ctrl+D and download metadata and/or covers, Calibre simply quietly dies. With "Segmentation fault" error message if you have started it from console. Sometimes it happens on second or third attempt to download the medatada, sometimes I download metadata for dozens for books without problem. What steps can I do to try to find the root of the problem? I have tried running calibre-debug --gui, but there is no better error message. I am running on Mint Linux (an Ubuntu clone), newest version. EDIT: If I restart the program and try downloading metadata again, Calibre doesn't crash on the same books. Last edited by kacir; 09-10-2011 at 03:53 PM.

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09-10-2011, 05:17 PM	#2
kovidgoyal creator of calibre Posts: 43,853 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Crashes typically happen at the level of C code in libraries calibre uses not calibre code, so they aren't so easy to debug. To start with try running calibre under gdb and get a back trace.

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