Arch Linux

Same issue for me. I reinstalled simple-scan. Also tried it on a fresh user account without avail.

Simple Scan immediately closes after saving a scan as pdf. On the terminal it shows that is because of a segmentation fault while saving. The journal has this message from simple-scan:
segfault at bcec60 ip 0000000000bcec60 sp 00007fffe6818768 error 15

Simple Scan does create a pdf file but indeed it can't be opened with anything. The journal has this message from tracker-extract:
Couldn't create PopplerDocument from uri:'file:///home/user/Scanned%20Document.pdf', PDF document is damaged

Upstream bug:
https://bugs.launchpad.net/simple-scan/+bug/1687310

I didn't have 3.22 saved in /var/cache/pacman/pkg but rebuilt it. It required three changes in the code to build. With 3.22 I now have the same issue as 3.24. I suspect the issue is the vala compiler changes?

Same issue, same system. Archlinux Rolling Release, updated just an hour ago. Saves jpg's just fine:



gdb simple-scan
GNU gdb (GDB) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from simple-scan...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/simple-scan
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffe9f1a700 (LWP 7273)]
[New Thread 0x7fffe9719700 (LWP 7274)]
[New Thread 0x7fffe8cfc700 (LWP 7275)]
[New Thread 0x7fffdbfff700 (LWP 7276)]
[New Thread 0x7fffdb7fe700 (LWP 7277)]
[New Thread 0x7fffdaffd700 (LWP 7278)]
[New Thread 0x7fffc7161700 (LWP 7279)]
[New Thread 0x7fffbe269700 (LWP 7280)]
[Thread 0x7fffbe269700 (LWP 7280) exited]
[New Thread 0x7fffbe269700 (LWP 7284)]
[New Thread 0x7fffbda68700 (LWP 7285)]
[New Thread 0x7fffbd267700 (LWP 7287)]
[New Thread 0x7fffbca66700 (LWP 7288)]
[New Thread 0x7fffaffff700 (LWP 7289)]
[Thread 0x7fffbd267700 (LWP 7287) exited]
[Thread 0x7fffaffff700 (LWP 7289) exited]
[Thread 0x7fffbda68700 (LWP 7285) exited]
[Thread 0x7fffbe269700 (LWP 7284) exited]

Thread 1 "simple-scan" received signal SIGSEGV, Segmentation fault.

bt:

(gdb) bt
#0 0x0000000000784b00 in ()
#1 0x00007ffff6c2d216 in deflateInit2_ () at /usr/lib/libz.so.1
#2 0x00007ffff6c2d45e in deflateInit_ () at /usr/lib/libz.so.1
#3 0x0000000000412048 in book_save ()
#4 0x000000000042df51 in ()
#5 0x00007ffff6280f75 in g_closure_invoke () at /usr/lib/libgobject-2.0.so.0
#6 0x00007ffff6292f82 in () at /usr/lib/libgobject-2.0.so.0
#7 0x00007ffff629bbdc in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#8 0x00007ffff629c46b in g_signal_emit_by_name () at /usr/lib/libgobject-2.0.so.0
#9 0x00007ffff62811a4 in () at /usr/lib/libgobject-2.0.so.0
#10 0x00007ffff629b8cd in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#11 0x00007ffff629bfbf in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#12 0x00007ffff75f5d6d in () at /usr/lib/libgtk-3.so.0
#13 0x00007ffff75f5dd5 in () at /usr/lib/libgtk-3.so.0
#14 0x00007ffff6280f75 in g_closure_invoke () at /usr/lib/libgobject-2.0.so.0
#15 0x00007ffff629295c in () at /usr/lib/libgobject-2.0.so.0
#16 0x00007ffff629bbdc in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#17 0x00007ffff629bfbf in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#18 0x00007ffff75f41d0 in () at /usr/lib/libgtk-3.so.0
#19 0x00007fffeff4d1c8 in ffi_call_unix64 () at /usr/lib/libffi.so.6
#20 0x00007fffeff4cc2a in ffi_call () at /usr/lib/libffi.so.6
#21 0x00007ffff6281c8a in g_cclosure_marshal_generic_va () at /usr/lib/libgobject-2.0.so.0
#22 0x00007ffff62811a4 in () at /usr/lib/libgobject-2.0.so.0
#23 0x00007ffff629b8cd in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#24 0x00007ffff629bfbf in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#25 0x00007ffff76afbd1 in () at /usr/lib/libgtk-3.so.0
#26 0x00007ffff6283d27 in g_cclosure_marshal_VOID__BOXEDv () at /usr/lib/libgobject-2.0.so.0
#27 0x00007ffff62811a4 in () at /usr/lib/libgobject-2.0.so.0
#28 0x00007ffff629b8cd in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#29 0x00007ffff629bfbf in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#30 0x00007ffff76ace9e in () at /usr/lib/libgtk-3.so.0
#31 0x00007ffff76ae4cb in () at /usr/lib/libgtk-3.so.0
#32 0x00007ffff76b114d in () at /usr/lib/libgtk-3.so.0
#33 0x00007ffff767e57e in gtk_event_controller_handle_event () at /usr/lib/libgtk-3.so.0
#34 0x00007ffff784339b in () at /usr/lib/libgtk-3.so.0
#35 0x00007ffff76f8bf1 in () at /usr/lib/libgtk-3.so.0
#36 0x00007ffff62811a4 in () at /usr/lib/libgobject-2.0.so.0
#37 0x00007ffff629b3a1 in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#38 0x00007ffff629bfbf in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#39 0x00007ffff784563c in () at /usr/lib/libgtk-3.so.0
---Type <return> to continue, or q <return> to quit---#0 0x0000000000784b00 in ()
#40 0x00007ffff76f5bce in () at /usr/lib/libgtk-3.so.0
#41 0x00007ffff76f7c3e in gtk_main_do_event () at /usr/lib/libgtk-3.so.0
#42 0x00007ffff7209d65 in () at /usr/lib/libgdk-3.so.0
#43 0x00007ffff723adf2 in () at /usr/lib/libgdk-3.so.0
#44 0x00007ffff5fa77b7 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#45 0x00007ffff5fa7a20 in () at /usr/lib/libglib-2.0.so.0
#46 0x00007ffff5fa7acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#47 0x00007ffff6ede00d in g_application_run () at /usr/lib/libgio-2.0.so.0
#48 0x000000000041ef18 in simple_scan_main ()
#49 0x00007ffff5258511 in __libc_start_main () at /usr/lib/libc.so.6
#50 0x000000000040effa in _start ()

simple-scan -d:


[+60.19s] DEBUG: ui.vala:635: Saving to 'file:///home/webdawg/Desktop/Scanned%20Document.pdf'
Segmentation fault (core dumped)

Same for me here (it worked until some days ago). Deleting $HOME/.cache/simple-scan doesn't help.

Downgrading to 3.22 seems to help:

# pacman -U /var/cache/pacman/pkg/simple-scan-3.22.0.1-2-x86_64.pkg.tar.xz

@felixna I should have made this clear in the parent comment of the bug report. Downgrading to 3.22 allows me to save pdfs again.

I didn't have 3.22 saved in /var/cache/pacman/pkg and as I wrote you couldn't rebuild it due to vala errors. With Felix' confirmation that 3.22 works I managed to downgrade to 3.22 by first downgrading vala to 0.34. In case useful to anybody else I note what I did below.

Download the 0.34 PKGBUILD for vala (save as file PKGBUILD), build it with makepkg and install the created package with pacman -U:
https://git.archlinux.org/svntogit/packages.git/plain/trunk/PKGBUILD?h=packages/vala&id=6b7e6d07a81a42c86da6712638d748b1fac54ebd

Afterwards do the same thing for 3.22 PKGBUILD for simple-scan:
https://git.archlinux.org/svntogit/community.git/plain/trunk/PKGBUILD?h=packages/simple-scan&id=19f71ac740e4039c54f5b9655a783e53f5b57d6b

You can then upgrade vala again with pacman -S vala. To avoid pacman upgrading simple-scan for now, add simple-scan to IgnorePkg in /etc/pacman.conf.

Please rebuild simple-scan with debug symbols `options=(debug !strip)` in order to get better traces.

Trace of simple-scan 3.24.1-1 built with debug symbols attached. Segmentation fault happens in thread #1.

This seems to be an issue with vala 0.36; the z_stream passed into deflateInit is not initialized.

https://bugzilla.gnome.org/show_bug.cgi?id=782056

Thanks, that seems to be the root cause indeed. I've retested by installing vala 0.34 and building simple-scan 3.24.1-1 with that. With that I can save scans to pdf just fine.

I confirm that building vala 0.36.2-1 with the patch from https://bugzilla.gnome.org/show_bug.cgi?id=782056#c1 works. Rebuilding simple-scan 3.24.1-1 afterwards solved the problem.

simple-scan 3.24.1-1-x86_64 started segfaulting on saving PDFs within the last few days, but I don't have vala installed. Is this therefore definitely a different issue? A quick `sudo pacman -U /var/cache/pacman/pkg/simple-scan-3.22.0.1-2-x86_64.pkg.tar.xz` fixed the segfault.

3.24.1-2 should have this fixed.

Yes. 3.24.1-2 fixes it for me.
Thanks.