Software Boutique crashing on start

[Or Schiro]

Installed version:

orschiro@x230:~$ apt search ubuntu-mate-welcome
Sorting... Done
Full Text Search... Done
ubuntu-mate-welcome/artful,artful,now 17.10.7 all [installed]

Error log:

orschiro@x230:~$ ubuntu-mate-welcome
[Welcome] DPI below 50. Out of range..
[Welcome] Version: 17.10.7
[Welcome] Application Ready.
1 0x7f2d8dce8967 /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18(WTFCrash+0x17) [0x7f2d8dce8967]
2 0x7f2d85ce64ea /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(+0x63f4ea) [0x7f2d85ce64ea]
3 0x7f2d85cdb03d /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(+0x63403d) [0x7f2d85cdb03d]
4 0x7f2d85eb1d63 /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(webkit_web_view_run_javascript+0xc3) [0x7f2d85eb1d63]
5 0x7f2da286be18 /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_call_unix64+0x4c) [0x7f2da286be18]
6 0x7f2da286b87a /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_call+0x32a) [0x7f2da286b87a]
7 0x7f2da3727de4 /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x2bde4) [0x7f2da3727de4]
8 0x7f2da3729998 /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x2d998) [0x7f2da3729998]
9 0x7f2da371dc39 /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x21c39) [0x7f2da371dc39]
10 0x4591b3 ubuntu-mate-welcome(_PyObject_FastCallDict+0xa3) [0x4591b3]
11 0x54e607 ubuntu-mate-welcome() [0x54e607]
12 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
13 0x54e4b1 ubuntu-mate-welcome() [0x54e4b1]
14 0x54f45f ubuntu-mate-welcome(PyEval_EvalCodeEx+0x2f) [0x54f45f]
15 0x48b41d ubuntu-mate-welcome() [0x48b41d]
16 0x458fbe ubuntu-mate-welcome(PyObject_Call+0x3e) [0x458fbe]
17 0x551497 ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x1ba7) [0x551497]
18 0x54da88 ubuntu-mate-welcome() [0x54da88]
19 0x54e9e6 ubuntu-mate-welcome() [0x54e9e6]
20 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
21 0x54da88 ubuntu-mate-welcome() [0x54da88]
22 0x54e9e6 ubuntu-mate-welcome() [0x54e9e6]
23 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
24 0x54da88 ubuntu-mate-welcome() [0x54da88]
25 0x55772e ubuntu-mate-welcome(_PyFunction_FastCallDict+0x2be) [0x55772e]
26 0x459531 ubuntu-mate-welcome(_PyObject_Call_Prepend+0x231) [0x459531]
27 0x458fbe ubuntu-mate-welcome(PyObject_Call+0x3e) [0x458fbe]
28 0x58db52 ubuntu-mate-welcome() [0x58db52]
29 0x7f2da4ec074a /lib/x86_64-linux-gnu/libpthread.so.0(+0x774a) [0x7f2da4ec074a]
30 0x7f2da40a5caf /lib/x86_64-linux-gnu/libc.so.6(clone+0x3f) [0x7f2da40a5caf]
Segmentation fault (core dumped)

[Martin Wimpress  (flexiondotorg)]

I can't reproduce this.

[Or Schiro (orschiro)]

Martin, how can I debug this further?

The issue is still present with all the latest updates applied.

Thanks!

[Sondang Pakpahan (sondang-pakpahan)]

hope this help,

from apport.log :

ERROR: apport (pid 3059) Wed Aug 16 15:31:00 2017: called for pid 2979, signal 11, core limit 0
ERROR: apport (pid 3059) Wed Aug 16 15:31:00 2017: executable: /usr/bin/python3.6 (command line "ubuntu-mate-welcome")
ERROR: apport (pid 3059) Wed Aug 16 15:31:00 2017: is_closing_session(): no DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 3059) Wed Aug 16 15:31:00 2017: this executable already crashed 2 times, ignoring

[Martin Wimpress  (flexiondotorg)]

@lah7 on a fresh install of a fully updated Ubuntu MATE 17.10 daily image I see that Welcome is "freezing" when loading via the auto start. However, if launched from a terminal it works reliably. Can you have a poke about please :-)

[Or Schiro (orschiro)]

Martin, it loads successfully until the main menu:

orschiro@x230:~$ ubuntu-mate-welcome
[Welcome] Version: 17.10.8
[Welcome] Application Ready.

When I click on Software, it crashes:

1 0x7f42b9436967 /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18(WTFCrash+0x17) [0x7f42b9436967]
2 0x7f42b9ce64ea /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(+0x63f4ea) [0x7f42b9ce64ea]
3 0x7f42b9cdb03d /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(+0x63403d) [0x7f42b9cdb03d]
4 0x7f42b9eb1d63 /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(webkit_web_view_run_javascript+0xc3) [0x7f42b9eb1d63]
5 0x7f42d9ff6e18 /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_call_unix64+0x4c) [0x7f42d9ff6e18]
6 0x7f42d9ff687a /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_call+0x32a) [0x7f42d9ff687a]
7 0x7f42daeb2de4 /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x2bde4) [0x7f42daeb2de4]
8 0x7f42daeb4998 /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x2d998) [0x7f42daeb4998]
9 0x7f42daea8c39 /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x21c39) [0x7f42daea8c39]
10 0x4591b3 ubuntu-mate-welcome(_PyObject_FastCallDict+0xa3) [0x4591b3]
11 0x54e607 ubuntu-mate-welcome() [0x54e607]
12 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
13 0x54e4b1 ubuntu-mate-welcome() [0x54e4b1]
14 0x54f45f ubuntu-mate-welcome(PyEval_EvalCodeEx+0x2f) [0x54f45f]
15 0x48b41d ubuntu-mate-welcome() [0x48b41d]
16 0x458fbe ubuntu-mate-welcome(PyObject_Call+0x3e) [0x458fbe]
17 0x551497 ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x1ba7) [0x551497]
18 0x54da88 ubuntu-mate-welcome() [0x54da88]
19 0x54e9e6 ubuntu-mate-welcome() [0x54e9e6]
20 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
21 0x54da88 ubuntu-mate-welcome() [0x54da88]
22 0x54e9e6 ubuntu-mate-welcome() [0x54e9e6]
23 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
24 0x54da88 ubuntu-mate-welcome() [0x54da88]
25 0x55772e ubuntu-mate-welcome(_PyFunction_FastCallDict+0x2be) [0x55772e]
26 0x459531 ubuntu-mate-welcome(_PyObject_Call_Prepend+0x231) [0x459531]
27 0x458fbe ubuntu-mate-welcome(PyObject_Call+0x3e) [0x458fbe]
28 0x58db52 ubuntu-mate-welcome() [0x58db52]
29 0x7f42dc64b74a /lib/x86_64-linux-gnu/libpthread.so.0(+0x774a) [0x7f42dc64b74a]
30 0x7f42db830caf /lib/x86_64-linux-gnu/libc.so.6(clone+0x3f) [0x7f42db830caf]
Segmentation fault (core dumped)

[Luke Horwell (lah7)]

Unfortunately, this is likely to be an issue with the WebKit2GTK library. It wouldn't be the first time a segmentation fault happens and causes a white screen. Strangely, the problem goes away when the system gets updated.

[Or Schiro (orschiro)]

> Strangely, the problem goes away when the system gets updated.

I don't understand. I update my system regularly but the problem persists.

[Tim Apple (timapple)]

I just did a fresh install of 17.10 and have this issue now also... getting.

[Welcome] Starting in Software Boutique mode.
[Welcome] Version: 17.10.8
[Welcome] Application Ready.
1 0x7f8f33085287 /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18(WTFCrash+0x17) [0x7f8f33085287]
2 0x7f8f33fe6cca /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(+0x63dcca) [0x7f8f33fe6cca]
3 0x7f8f33fdb82c /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(+0x63282c) [0x7f8f33fdb82c]
4 0x7f8f341b3463 /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37(webkit_web_view_run_javascript+0xc3) [0x7f8f341b3463]
5 0x7f8f53566e18 /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_call_unix64+0x4c) [0x7f8f53566e18]
6 0x7f8f5356687a /usr/lib/x86_64-linux-gnu/libffi.so.6(ffi_call+0x32a) [0x7f8f5356687a]
7 0x7f8f544219cc /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x2b9cc) [0x7f8f544219cc]
8 0x7f8f544234b8 /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x2d4b8) [0x7f8f544234b8]
9 0x7f8f54417209 /usr/lib/python3/dist-packages/gi/_gi.cpython-36m-x86_64-linux-gnu.so(+0x21209) [0x7f8f54417209]
10 0x4591b3 ubuntu-mate-welcome(_PyObject_FastCallDict+0xa3) [0x4591b3]
11 0x54e607 ubuntu-mate-welcome() [0x54e607]
12 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
13 0x54e4b1 ubuntu-mate-welcome() [0x54e4b1]
14 0x54f45f ubuntu-mate-welcome(PyEval_EvalCodeEx+0x2f) [0x54f45f]
15 0x48b41d ubuntu-mate-welcome() [0x48b41d]
16 0x458fbe ubuntu-mate-welcome(PyObject_Call+0x3e) [0x458fbe]
17 0x551497 ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x1ba7) [0x551497]
18 0x54da88 ubuntu-mate-welcome() [0x54da88]
19 0x54e9e6 ubuntu-mate-welcome() [0x54e9e6]
20 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
21 0x54da88 ubuntu-mate-welcome() [0x54da88]
22 0x54e9e6 ubuntu-mate-welcome() [0x54e9e6]
23 0x552f9b ubuntu-mate-welcome(_PyEval_EvalFrameDefault+0x36ab) [0x552f9b]
24 0x54da88 ubuntu-mate-welcome() [0x54da88]
25 0x55772e ubuntu-mate-welcome(_PyFunction_FastCallDict+0x2be) [0x55772e]
26 0x459531 ubuntu-mate-welcome(_PyObject_Call_Prepend+0x231) [0x459531]
27 0x458fbe ubuntu-mate-welcome(PyObject_Call+0x3e) [0x458fbe]
28 0x58db52 ubuntu-mate-welcome() [0x58db52]
29 0x7f8f55ff074a /lib/x86_64-linux-gnu/libpthread.so.0(+0x774a) [0x7f8f55ff074a]
30 0x7f8f551d5caf /lib/x86_64-linux-gnu/libc.so.6(clone+0x3f) [0x7f8f551d5caf]
Segmentation fault

[Luke Horwell (lah7)]

In this case, the WebKitGTK library has updated and introduced a regression. The fix is a workaround to remove the threading from the application, which was causing a segfault.
https://github.com/ubuntu-mate/ubuntu-mate-welcome/commit/ac68f729bdb8fad72ceb5115a1d7868ac9ef7bc7

A bug report of the root problem has been raised upstream:
https://bugs.webkit.org/show_bug.cgi?id=175855

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-mate-welcome - 17.10.9

---------------
ubuntu-mate-welcome (17.10.9) artful; urgency=medium

  * Remove threading to prevent segfaults at startup. (LP: #1710150)
  * Add Super and Alt documentation to Getting Started.

 -- Martin Wimpress <email address hidden> Tue, 22 Aug 2017 11:52:00 +0100

[Charlie (charlie1945)]

Thanks for fix :-) Now working fine here on Ubuntu Mate 17.10 and Ubuntu 17.10.

[Phil (beesontoast)]

I'm still getting this error on a clean and updated install on Oct 28 2017.