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#1 2015-06-13 17:00:37

alex.theoto
Member
From: Athens Greece
Registered: 2014-11-30
Posts: 307

[SOLVED] lxpanel crashes on right click

Hello,
I have installed ArchLinux at work on a netbook with lxde desktop months ago.
Everything was perfect but after a recent upgrade, I had a random crash when I right click on any opened  application at lxpanel.
If I right click elsewhere (on the clock etc), panel didn't crash.
I deleted all hidden user config files but didn't solve the problem.
Now, the crash is permanent and not random.
I reconfigured all the installed packages with

pacman -Qenq | pacman -S -

but nothing changed.

Journalctl as root gives me the following errors:

journalctl -r

Jun 13 14:49:45 CompaqMini systemd-coredump[1368]: Process 1352 (lxpanel) of user 1000 dumped core.
Jun 13 14:49:44 CompaqMini kernel: lxpanel[1352]: segfault at 0 ip 0805814f sp bfcc8004 error 4 in lxpanel[8048000+1f000]
Jun 13 14:49:38 CompaqMini systemd-coredump[1351]: Process 1219 (lxpanel) of user 1000 dumped core.
Jun 13 14:49:38 CompaqMini kernel: lxpanel[1219]: segfault at 0 ip 0805814f sp bfe4da04 error 4 in lxpanel[8048000+1f000]
Jun 13 14:28:14 CompaqMini kernel: perf samples too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
Jun 13 14:27:25 CompaqMini systemd-coredump[1218]: Process 1192 (lxpanel) of user 1000 dumped core.
Jun 13 14:27:24 CompaqMini kernel: lxpanel[1192]: segfault at 0 ip 0805814f sp bfc644d4 error 4 in lxpanel[8048000+1f000]
Jun 13 14:27:03 CompaqMini systemd-coredump[1191]: Process 303 (lxpanel) of user 1000 dumped core.
Jun 13 14:27:02 CompaqMini kernel: lxpanel[303]: segfault at 0 ip 0805814f sp bfab0dd4 error 4 in lxpanel[8048000+1f000]

Any idea what is wrong? Thank you...

Last edited by alex.theoto (2015-06-16 19:22:47)

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#2 2015-06-13 18:42:05

Head_on_a_Stick
Member
From: The Wirral
Registered: 2014-02-20
Posts: 9,003
Website

Re: [SOLVED] lxpanel crashes on right click

alex.theoto wrote:

after a recent upgrade

Was lxpanel upgraded?

If so, does downgrading it solve the problem?

Jin, Jîyan, Azadî

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#3 2015-06-14 14:36:36

googgah
Member
From: behind forgotten router ...
Registered: 2011-01-16
Posts: 3

Re: [SOLVED] lxpanel crashes on right click

Hello Alex,

I've got into similar troubles, with some differences though. In my case lxpanel crashed only when I right-clicked on the icon of the application doing heavy IO stuff on disks, like Chrome right after it started.

The problem's gone when I cleared .cache folder in my home directory.
Though frankly, I donno is it a solution or just coincidence.

I do not like magic, I like control.

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#4 2015-06-14 20:40:38

nbvcxz
Member
From: Poland
Registered: 2007-12-29
Posts: 202

Re: [SOLVED] lxpanel crashes on right click

  1. With clicking at which region of lxpanel it goes coredump (eg. menu, quickstart, windows buttons, clock etc.) ?

  2. Are you sure all lxde components - especially menu-cache, lxmenu-data, libwnck and libfm are latest and from official repo (not compiled by you)

  3. As suggested @googgah , clear ~/.cache ; backup and clear ~/.config/lxpanel

  4. Try to start lxpanel from terminal to see if there are more information within crash

Last edited by nbvcxz (2015-06-14 20:43:52)

Lenovo G50 | LXQT-git | compton | conky

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#5 2015-06-15 16:45:46

alex.theoto
Member
From: Athens Greece
Registered: 2014-11-30
Posts: 307

Re: [SOLVED] lxpanel crashes on right click

Thank you all for your answers.

@Head_on_a_Stick
I didn't think of downgrade lxpanel. By downgrading, the problem is solved. So there is a bug on newer version.

@googgah
By deleting .cache didn't help.

@nbvcxz
lxpanel crash when I right click on the icon of the application at the 'Task Bar (Window List)' when there is an open one. When I click not on a application, panel works ok. Also, by cleaning .config/lxpanel and .cache doesn't help.


Since I found temporary solution by downgrading, It's time to test when the bug affects lxpanel.
When I use lxpanel 0.8.0-1 from terminal (after kill the panel and run it via term) I get the following messages:

** (lxpanel:12793): WARNING **: launchbar: desktop entry does not exist


** (lxpanel:12793): WARNING **: launchtaskbar: can't init button


(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:12793): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

When I use lxpanel 0.8.1-1 I get:

** (lxpanel:13654): WARNING **: launchbar: desktop entry does not exist


** (lxpanel:13654): WARNING **: launchtaskbar: can't init button


(lxpanel:13654): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13654): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13654): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13654): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13654): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13654): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13654): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13654): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13654): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13654): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13654): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13654): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed




[service@CompaqMini ~]$ killall lxpanel 
[service@CompaqMini ~]$ lxpanel

** (lxpanel:13894): WARNING **: launchbar: desktop entry does not exist


** (lxpanel:13894): WARNING **: launchtaskbar: can't init button


(lxpanel:13894): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13894): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13894): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13894): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13894): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13894): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13894): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(process:13926): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(lxpanel:13894): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE
*************************
A coding exception was thrown and uncaught in a Task.

Full message: TypeError: Filter is null
Full stack: INIParser.prototype.process@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/filterStorage.js:789:9
exports.IO.readFromFile/onProgress@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/io.js:97:15
exports.IO.readFromFile/<@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/io.js:182:11
TaskImpl_run@resource://gre/modules/Task.jsm:330:41
Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:867:23
this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:746:7
this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:688:37

*************************
*************************
A coding exception was thrown in a Promise rejection callback.
See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise

Full message: TypeError: Cu is null
Full stack: exports.FilterStorage.loadFromDisk/readFile</<@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/filterStorage.js:385:11
exports.IO.readFromFile/onError@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/io.js:149:9
Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:870:21
this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:746:7
this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:688:37

*************************
Segmentation fault (core dumped)
[service@CompaqMini ~]$ lxpanel

** (lxpanel:13992): WARNING **: launchbar: desktop entry does not exist


** (lxpanel:13992): WARNING **: launchtaskbar: can't init button


(lxpanel:13992): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13992): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13992): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13992): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(process:14017): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(lxpanel:13992): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE
*************************
A coding exception was thrown and uncaught in a Task.

Full message: TypeError: Filter is null
Full stack: INIParser.prototype.process@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/filterStorage.js:789:9
exports.IO.readFromFile/onProgress@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/io.js:97:15
exports.IO.readFromFile/<@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/io.js:182:11
TaskImpl_run@resource://gre/modules/Task.jsm:330:41
Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:867:23
this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:746:7
this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:688:37

*************************
*************************
A coding exception was thrown in a Promise rejection callback.
See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise

Full message: TypeError: Cu is null
Full stack: exports.FilterStorage.loadFromDisk/readFile</<@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/filterStorage.js:385:11
exports.IO.readFromFile/onError@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/bootstrap.js -> file:///usr/lib/firefox/browser/extensions/%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D/lib/io.js:149:9
Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:870:21
this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:746:7
this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:688:37

*************************

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(process:14076): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(lxpanel:13992): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:13992): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed



[service@CompaqMini ~]$ lxpanel --log 5

** (lxpanel:14296): WARNING **: launchbar: desktop entry does not exist


** (lxpanel:14296): WARNING **: launchtaskbar: can't init button


(lxpanel:14296): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:14296): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:14296): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:14296): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:14296): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(process:14310): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(lxpanel:14296): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE
Segmentation fault (core dumped)
[service@CompaqMini ~]$ 
[service@CompaqMini ~]$ 
[service@CompaqMini ~]$ lxpanel --log 5

** (lxpanel:14381): WARNING **: launchbar: desktop entry does not exist


** (lxpanel:14381): WARNING **: launchtaskbar: can't init button


(lxpanel:14381): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:14381): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:14381): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:14381): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:14381): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:14381): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

(lxpanel:14381): Wnck-WARNING **: Unhandled action type _OB_WM_ACTION_UNDECORATE

(lxpanel:14381): Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion 'GTK_IS_WIDGET (widget)' failed

(lxpanel:14381): Gtk-CRITICAL **: IA__gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed

At startup, lxpanel looks ok but crashes on right click. When I kill panel and start it again, there are some missing icons. Look at pictures.
After some tests, I discovered that when the panel has the volume control, at startup the panel crashes and when I restart it by killing it, the panel doesn't crash. But there are some missing icons...
If I set the panel without volume control, panel doesn't crash even at startup. By adding volume and restarting session, panel crashes.
So maybe there is something wrong with volume control.


It's looks like a bug. For now, I will wait a couple of days for you suggestions and then I'll fill a bug report.

Thank you.

Last edited by alex.theoto (2015-06-15 16:52:42)

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#6 2015-06-15 19:18:26

googgah
Member
From: behind forgotten router ...
Registered: 2011-01-16
Posts: 3

Re: [SOLVED] lxpanel crashes on right click

@alex.theoto

You need not to wait 2 days, Alex, it's bug obviously.
http://sourceforge.net/p/lxde/bugs/758/, looks like already fixed in the git version.

Last edited by googgah (2015-06-15 19:20:50)

I do not like magic, I like control.

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#7 2015-06-16 19:22:29

alex.theoto
Member
From: Athens Greece
Registered: 2014-11-30
Posts: 307

Re: [SOLVED] lxpanel crashes on right click

Ok, I will closethis post  as [solved] and wait for the update.

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