Segmentation Fault after Qt upgrade

reader42 · 03-15-2010, 06:06 PM

I'm running a Kubuntu 9.10 here using calibre 0.6.13 package.

After upgrading Qt (from 4.5.3really4.5.2-0ubuntu1 to 4.6.2-0ubuntu1~karmic1~ppa2) I get a Segmentation Fault when starting calibre:

Code:

$ calibre
link  hasn't been detected!
link  hasn't been detected!
Segmentation fault

I tried to rebuild the package against the new Qt-version. The build suceeds but the problem is still there.
Any ideas how to fix this?

reader42 · 03-20-2010, 05:16 AM

No ideas?
Can someone tell me, how to get a traceback?

kovidgoyal · 03-20-2010, 06:47 AM

use the binary calibre install from the calibre website, it bundles its own Qt. I have nothing to do with the Ubuntu calibre port, so I can't really help with Ubuntu specific issues.

elvenic · 03-20-2010, 08:58 AM

Quote:

Originally Posted by kovidgoyal

use the binary calibre install from the calibre website, it bundles its own Qt. I have nothing to do with the Ubuntu calibre port, so I can't really help with Ubuntu specific issues.

Well, I'm using binary install (version 0.6.45) on Ubuntu, and since yesterday's update of the Ubuntu Linux kernel to the version:

$ uname -a
Linux XXXXXXX 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 05:23:09 UTC 2010 i686 GNU/Linux

Calibre segfaults in the same way when I plug in the Sony Reader (PRS-600).

Whan I run Calibre on the command line with the Sony reader plugged in, even with -v option, only following is printed:

$ ./calibre -v
link hasn't been detected!
link hasn't been detected!
Segmentation fault

(Note that after 'link' lines, Calibre's window appears, and it breafly tells that Sony reader is detected, but after 2 sec. the window disappears as Calibre segfaults.)

When I run Calibre without Sony reader pluged in, it starts normally and does not crash.

So I don't think this is related to QT update, it is more likely related to the Ubuntu Linux kernel update.

I will try to reboot to previous kernel version and see what happens.

theducks · 03-20-2010, 01:01 PM

I have the exact same Ubuntu version shown and 6.45 does NOT fault with my Astak PP
Getting a good 6.45 file was a nightmare. I finally got the bz2 from Sourceforge.

Good luck

reader42 · 03-21-2010, 05:08 PM

I did some debugging:

The segmentation fault occurs, when the function recount of the class TagsView is called. This

Code:

self.scrollTo(ci, QTreeView.PositionAtTop)

is the line that causes the sefault. When I remove it, the program seems to work fine.

theducks · 03-21-2010, 05:45 PM

What did you do to trigger the segfault?
I can try it here.

reader42 · 03-21-2010, 05:57 PM

Just starting the program triggers the segfault.
I think it has something to do with the Qt-Version, because it occurs since I updated Qt.

theducks · 03-21-2010, 07:58 PM

Quote:

Originally Posted by reader42

Just starting the program triggers the segfault.
I think it has something to do with the Qt-Version, because it occurs since I updated Qt.

Got to love software support

problems
6.45 on Ubuntu 9.10 32 bit (Intel)
Attached reader to USB Cable
Started Calibre.

It detects my reader (Astak PP ) and SD card perfectly
QT is 4.5.3 really...

03-15-2010, 06:06 PM	#1
reader42 Zealot Posts: 117 Karma: 2097 Join Date: Feb 2010 Device: none	Segmentation Fault after Qt upgrade I'm running a Kubuntu 9.10 here using calibre 0.6.13 package. After upgrading Qt (from 4.5.3really4.5.2-0ubuntu1 to 4.6.2-0ubuntu1~karmic1~ppa2) I get a Segmentation Fault when starting calibre: Code: $ calibre link hasn't been detected! link hasn't been detected! Segmentation fault I tried to rebuild the package against the new Qt-version. The build suceeds but the problem is still there. Any ideas how to fix this?

03-21-2010, 05:08 PM	#6
reader42 Zealot Posts: 117 Karma: 2097 Join Date: Feb 2010 Device: none	I did some debugging: The segmentation fault occurs, when the function recount of the class TagsView is called. This Code: self.scrollTo(ci, QTreeView.PositionAtTop) is the line that causes the sefault. When I remove it, the program seems to work fine.

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03-20-2010, 05:16 AM	#2
reader42 Zealot Posts: 117 Karma: 2097 Join Date: Feb 2010 Device: none	No ideas? Can someone tell me, how to get a traceback?

03-20-2010, 06:47 AM	#3
kovidgoyal creator of calibre Posts: 45,609 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	use the binary calibre install from the calibre website, it bundles its own Qt. I have nothing to do with the Ubuntu calibre port, so I can't really help with Ubuntu specific issues.

03-20-2010, 01:01 PM	#5
theducks Well trained by Cats Posts: 31,267 Karma: 61916422 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	I have the exact same Ubuntu version shown and 6.45 does NOT fault with my Astak PP Getting a good 6.45 file was a nightmare. I finally got the bz2 from Sourceforge. Good luck

03-21-2010, 05:45 PM	#7
theducks Well trained by Cats Posts: 31,267 Karma: 61916422 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	What did you do to trigger the segfault? I can try it here.

03-21-2010, 05:57 PM	#8
reader42 Zealot Posts: 117 Karma: 2097 Join Date: Feb 2010 Device: none	Just starting the program triggers the segfault. I think it has something to do with the Qt-Version, because it occurs since I updated Qt.