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#1 2007-02-05 07:33:52

justakiwi
Member
Registered: 2007-02-03
Posts: 49

Panel has disappeared

For some totally unknown reason my panel has completely disappeared after a reboot. I had "save session for future logins" set to prompt, and it saved everything except the panel. I can't even access the panel manager - if I click on it nothing happens. Everything else is working fine. I've rebooted again to see if that would fix it but it didn't.

How can I get my panel back?

(I only had one panel, at the bottom of my screen, which had everything I wanted on it including the system tray)

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#2 2007-02-05 08:35:26

Nick
Dev
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Registered: 2005-02-17
Posts: 1,143
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Re: Panel has disappeared

Alt+f2 -> xfce4-panel -> run

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#3 2007-02-05 09:27:38

justakiwi
Member
Registered: 2007-02-03
Posts: 49

Re: Panel has disappeared

Nick wrote:

Alt+f2 -> xfce4-panel -> run

Many thanks!  Have you any idea why I lost it in the first place?  Is there a "hide panel" key combo I might have hit by accident?

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#4 2007-02-05 09:29:45

Nick
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Registered: 2005-02-17
Posts: 1,143
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Re: Panel has disappeared

Probably a crash and then save your session while you logout. I've seen some signal problems while editing the panel, but /me has no time to fix them :oops:.

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#5 2007-02-06 17:00:31

brad
Member
Registered: 2007-02-06
Posts: 9

Re: Panel has disappeared

My panel disappeared as well. I got it back by Alt+f2 -> xfce4-panel -> run. I also selected to "Automatically save session on logout" in the Sessions and Startup settings.

And that worked.

However, I then quit and restarted and the panel doesn't appear. Subsequent "Alt+f2 -> xfce4-panel -> run" only flash the panel (like it's trying to start) and then it quickly disappears.

Any hints?

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#6 2007-02-06 18:13:28

Nick
Dev
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Registered: 2005-02-17
Posts: 1,143
Website

Re: Panel has disappeared

Are there any warnings printed when you run xfce4-panel inside a terminal emulator?

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#7 2007-02-06 18:39:13

brad
Member
Registered: 2007-02-06
Posts: 9

Re: Panel has disappeared

Are there any warnings printed when you run xfce4-panel inside a terminal emulator?

Yes, thanks for the idea.

It seems to depend on what User Interface preference is selected. Sometimes I just get a Seg Fault. Most times the  error is:
***glibc detected *** xfce4-panel: free(): invalid pointer: 0x082ee3b0 ***

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#8 2007-02-06 18:45:24

Nick
Dev
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Registered: 2005-02-17
Posts: 1,143
Website

Re: Panel has disappeared

Can you compile xfce4-panel with debug support? (replace the prefix with the correct one)

CFLAGS="-O0 -g3 -ggdb" ./configure --prefix=/usr/local --enable-debug && make && make install

Create a backtrace in gdb (gdb xfce4-panel -> run -> bt) and create a bugreport here. I'll take a look ASAP.

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#9 2007-02-06 18:47:44

brad
Member
Registered: 2007-02-06
Posts: 9

Re: Panel has disappeared

hmm.. also interesting is that if I run  xfce4-panel in Terminal, it works.

But, if I run it in the default terminal (what is that called? just a reg 'ol xterm I think) I get the error I mentioned in my last post.

Again, if run in Alt+f2 -> xfce4-panel -> run, it just flashes and goes away.

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#10 2007-02-06 18:51:25

Nick
Dev
From: ~
Registered: 2005-02-17
Posts: 1,143
Website

Re: Panel has disappeared

Weird. Well if you can find a (good) way to reproduce it (maybe some plugin causes the crash for example), I'd like to hear it...

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#11 2007-02-07 01:48:03

brad
Member
Registered: 2007-02-06
Posts: 9

Re: Panel has disappeared

It seems to be the weather plugin.
I can provide a trace if someone wants it

brad

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#12 2007-02-07 04:00:30

justakiwi
Member
Registered: 2007-02-03
Posts: 49

Re: Panel has disappeared

brad wrote:

It seems to be the weather plugin.
I can provide a trace if someone wants it

brad

Ah! That makes sense because I did install the weather plugin around the time the panel disappeared. As it turned out the weather plugin didn't work properly - it was really glitchy and I couldn't  get rid of it via "remove from panel". I had to uninstall it.  Now that I think about it the panel probably disappeared sometime after I uninstalled the plugin.

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#13 2007-02-07 08:42:25

Nick
Dev
From: ~
Registered: 2005-02-17
Posts: 1,143
Website

Re: Panel has disappeared

Mm yeah I'd like to have some trace information. Can you put this in a bug report, including your location code, gtk/glib version etc?

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#14 2007-02-07 15:30:39

brad
Member
Registered: 2007-02-06
Posts: 9

Re: Panel has disappeared

Mm yeah I'd like to have some trace information. Can you put this in a bug report, including your location code, gtk/glib version etc?

Uhh.. is there Mantis or Bugzilla or other defect tracker for xfce plugins? I'm not familiar with this development so I don't know the particulars. Tell me what you want and how to do it and I'll be glad to.

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#15 2007-02-07 21:23:00

Nick
Dev
From: ~
Registered: 2005-02-17
Posts: 1,143
Website

Re: Panel has disappeared

At least file a bug report here with your weather settings and some version information about gtk and glib. Maybe there is a warning printed when (run xfce4-panel inside a terminal) after the crash?

Debugging a plugin is not very easy (sometimes not even possible), because the panel starts a new process.

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#16 2007-02-19 23:25:00

AlexIT
Member
Registered: 2007-02-18
Posts: 1

Re: Panel has disappeared

Ok, I have the same problem.

I recognized, that I have to say in terminal

xfce4-panel

I recognized too, that the problem module is

xfce4-xfapplet-plugin

I know - I have to remove this plugin,

what files I have to edit?  roll

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#17 2007-02-20 19:01:24

Jellybean
Member
Registered: 2007-02-17
Posts: 43

Re: Panel has disappeared

Inside ~./config/xfce4/panel
remove it from panel.xml
remove its configuration file

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