GTK+ version 2.24.28 / GLib 2.44.1 Locale: de_DE.UTF-8 (charset: UTF-8) Features: IPv6 iconv compface GnuTLS LDAP GNU/aspell libetpan libSM Operating system: Linux 4.1.6-1-ARCH (x86_64) C Library: GNU libc 2.22
Claws-Mail Process (832) received Signal 11
Claws-Mail Process(899) or (1187) received Signal 11
http://www.thewildbeast.co.uk/claws-mail/bugzilla/page.cgi?id=bug-writing.html
How to reproduce: 1. Open Claws-Mail 2. Do something or nothing 3. Close Claws-Mail 4. Then Claws-Mail shows the message: GTK+ version 2.24.28 / GLib 2.44.1 Locale: de_DE.UTF-8 (charset: UTF-8) Features: IPv6 iconv compface GnuTLS LDAP GNU/aspell libetpan libSM Operating system: Linux 4.1.6-1-ARCH (x86_64) C Library: GNU libc 2.22 When I start Claws-Mail per console the output is: claws.c:102:Starting Claws Mail version Claws Mail 3.12.0 utils.c:1900:using default rc_dir /home/user/.claws-mail main.c:2174:Using control socket /tmp/claws-mail-1000/58c107d390fa69c187b12327b2ba0270 main.c:2238:Opening socket /tmp/claws-mail-1000/58c107d390fa69c187b12327b2ba0270 main.c:769:runtime GTK+ 2.24.28 / GLib 2.44.1 main.c:777:buildtime GTK+ 2.24.28 / GLib 2.44.1 main.c:786:Compiled-in features: main.c:791: compface main.c:797: Enchant main.c:803: GnuTLS main.c:809: IPv6 main.c:815: iconv main.c:827: LDAP main.c:833: libetpan 1.6 main.c:839: libSM main.c:845: NetworkManager prefs_gtk.c:1037:new file '/home/user/.claws-mail/clawsrc' prefs_gtk.c:996:new section 'Common' prefs_gtk.c:996:new section 'Plugins_Common' prefs_gtk.c:996:new section 'Plugins_GTK2' prefs_gtk.c:996:new section 'Bogofilter' prefs_gtk.c:1037:new file '/home/user/.claws-mail/folderitemrc' prefs_gtk.c:996:new section '#imap/INBOX' prefs_gtk.c:996:new section '#imap/INBOX/Trash' prefs_gtk.c:996:new section '#imap/INBOX/Junk' prefs_gtk.c:996:new section '#imap/INBOX/Junk Folder' prefs_gtk.c:996:new section '#imap/INBOX/Sent' prefs_gtk.c:996:new section '#imap/INBOX/User' prefs_gtk.c:1037:new file '/home/user/.claws-mail/accountrc' prefs_gtk.c:996:new section 'Account: 1' prefs_gtk.c:996:new section 'Account: 2' prefs_gtk.c:85:Reading configuration... claws-mail: Fatal IO error 11 (Ressource is not available) on X server :0.0. So Claws-Mail doesn't terminate correctly. Build-Date of Claws-Mail: 19th July 2015. See also: https://www.archlinux.de/?page=PackageDetails;repo=extra;arch=x86_64;pkgname=claws-mail I don't know whether this bug also appears on other platforms. I am using ARCHLINUX with MATE 1.10.2 as Desktop. The problem also appears when no mailbox exists and no other applications are started.
That debug output doesn't look like it's from when Claws Mail is exiting, but rather from when it is starting. You say the crash happens when you close it.
When I start Claws-Mail the console is empty. The output comes first when I close Claws-Mail. I think you are correct. So the important line is claws-mail: Fatal IO error 11 (Ressource is not available) on X server :0.0. Maybe the problem comes from X11 or MATE? Possibly GTK? It seems that it is not a problem of Claws-Mail. I can't offer more information about this phenomenon. Does Claws-Mail have any other Logs? Maybe a log file? You can close this report if you think that it isn't a problem of Claws-Mail.
It seems that it is not really a problem of claws mail. See https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/999191 and https://bbs.archlinux.org/viewtopic.php?id=200797 Thanks for your help.