Hi, I've got a weird problem with a freshly upgraded (from 3.5.10) KDE: whenever I start KDE with a clean profile, everything works fine. But then, after I log out and back in, the panel disappears. Later I noticed, that to get the panel back it's enough to remove the .kde4/share/config/plasma-appletsrc file (every time before logging in, though), so maybe the problem is somewhere there - here it is:

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$ cat plasma-appletsrc
[Containments][1]                                         
formfactor=0                                               
geometry=0,0,167:,1050                                     
immutability=1                                             
location=0                                                 
plugin=desktop                                             
screen=0                                                   
wallpaper=/usr/share/wallpapers/Blue_Curl/contents/images/1920x1200.jpg
zvalue=0                                                               

[Containments][3]
formfactor=2     
geometry=0,-44,167:,38
immutability=1       
location=4           
plugin=panel         
screen=0             
zvalue=150           

[Containments][3][Applets][4]
geometry=0,0,48,48           
immutability=1               
plugin=launcher             
zvalue=0                     

[Containments][3][Applets][4][Shortcuts]
global=                                 

[Containments][3][Applets][5]
geometry=0,0,22,23           
immutability=1               
plugin=notifier             
zvalue=0                     

[Containments][3][Applets][6]
geometry=0,0,121,88         
immutability=1               
plugin=pager                 
zvalue=0

[Containments][3][Applets][7]
geometry=0,0,500,58
immutability=1
plugin=tasks
zvalue=0

[Containments][3][Applets][8]
geometry=0,0,22,23
immutability=1
plugin=systemtray
zvalue=0

[Containments][3][Applets][9]
geometry=0,0,150,75
immutability=1
plugin=digital-clock
zvalue=0

[Containments][3][Configuration]
maximumSize=167:,38
minimumSize=167:,38

The problem is with the panel only, regular plasmoids stay in place.

Any help would be much appreciated

I don't have this problem, so perhaps this may help to fix it. Here's the appropriate part of my plasma-appletsrc:

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[Containments][3]
formfactor=2
geometry=0,-44,1024,38
immutability=1
location=4
plugin=panel
screen=0
zvalue=150

[Containments][3][Applets][10]
geometry=934,3,70,35
immutability=1
plugin=digital-clock
zvalue=0

[Containments][3][Applets][11]
geometry=0,3,35,35
immutability=1
plugin=lancelot_launcher
zvalue=0

[Containments][3][Applets][11][Configuration]
activate=hover
geometry=0,3,35,35
icon=kde
immutability=1
plugin=lancelot_launcher
show=main
zvalue=0

[Containments][3][Applets][5]
geometry=39,3,35,35
immutability=1
plugin=notifier
zvalue=0

[Containments][3][Applets][6]
geometry=78,3,47,35
immutability=1
plugin=pager
zvalue=0

[Containments][3][Applets][6][Configuration]
displayedText=2

[Containments][3][Applets][7]
geometry=129,3,746,35
immutability=1
plugin=tasks
zvalue=0

[Containments][3][Applets][7][Configuration]
showOnlyCurrentDesktop=true


[Containments][3][Applets][8]
geometry=879,3,51,35
immutability=1
plugin=systemtray
zvalue=0

[Containments][3][Configuration]
maximumSize=1024,38
minimumSize=1024,38

[General]
immutability=1

The biggest difference that I see (at a quick glance) is that I have


[General]
immutability=1

at the end.

EDIT: Could you post a diff of plasma-appletsrc before and after the panel is messed up? It may be helpful in finding the problem.

Thanks for the reply!

Here's the diff between the file generated just after logging in ("1") and the one from just after logging out ("2"):

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--- 1   2008-10-13 22:53:30.000000000 +0200
+++ 2   2008-10-13 23:03:03.000000000 +0200
@@ -8,6 +8,15 @@
 wallpaper=/usr/share/wallpapers/Blue_Curl/contents/images/1920x1200.jpg
 zvalue=0
 
+[Containments][1][Applets][2]
+formfactor=0
+geometry=6,6,600,400
+immutability=1
+location=0
+plugin=folderview
+screen=-1
+zvalue=0
+
 [Containments][1][Applets][2][Configuration]
 url=desktop:/
 
@@ -21,7 +30,7 @@
 zvalue=150
 
 [Containments][3][Applets][4]
-geometry=0,0,48,48
+geometry=0,4,34,34
 immutability=1
 plugin=launcher
 zvalue=0
@@ -30,31 +39,31 @@
 global=
 
 [Containments][3][Applets][5]
-geometry=0,0,22,23
+geometry=38,4,34,34
 immutability=1
 plugin=notifier
 zvalue=0
 
 [Containments][3][Applets][6]
-geometry=0,0,121,88
+geometry=76,4,55,34
 immutability=1
 plugin=pager
 zvalue=0
 
 [Containments][3][Applets][7]
-geometry=0,0,500,58
+geometry=135,4,1296.:,34
 immutability=1
 plugin=tasks
 zvalue=0
 
 [Containments][3][Applets][8]
-geometry=0,0,22,23
+geometry=1435.:,4,152,34
 immutability=1
 plugin=systemtray
 zvalue=0
 
 [Containments][3][Applets][9]
-geometry=0,0,150,75
+geometry=1591.:,4,68,34
 immutability=1
 plugin=digital-clock
 zvalue=0
@@ -62,3 +71,6 @@
 [Containments][3][Configuration]
 maximumSize=167:,38
 minimumSize=167:,38
+
+[General]
+immutability=1


However, copying the first file into place after logging out still leaves me with no panel.

I tried using your file and got this: http://img381.imageshack.us/img381/7253/screenhy9.png

That is: a panel, but no desktop

By the way, I just noticed Dolphin crashes every time I drag a file to a folder...:-S

yabolus wrote:I tried using your file and got this: http://img381.imageshack.us/img381/7253/screenhy9.png

That is: a panel, but no desktop

Yeah, because I only copied the part about the panel (containment 3), not the desktop.

Hopefully someone with some more plasma knowledge will be able to help you with that diff.

I'm not sure if this will help, but it is possible that Plasma is crashing when you logout, just before it is able to save the panel changes that you made. You can try forcing a "save" of the current plasma settings with by restarting it with this command:

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kquitapp plasma && plasma

Jucato wrote:

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kquitapp plasma && plasma

Nope, this command itself leaves me with no panel.

maybe you configured Kde4.1 to start from an empty session ... in Kde3 the empty session was "empty" but with kicker ... in kde4 it is real empty.

Try to save the session then configure kde to start from the last saved session

No, that didn't work - I always used KDE with empty sesion, also KDE 4.1 in Kubuntu and didn't have this problem.

From someone in IRC:

neverendingo, I think I found the problem from this bug report: http://bugs.kde.org/show_bug.cgi?id=166009 and its name is ffast-math for qt
Jucato, maybe you should suggest to that person on the forum as well to compile qt without ffast-math as a possible fix I'll try now

Hope that helps.

Jucato wrote:From someone in IRC:

neverendingo, I think I found the problem from this bug report: http://bugs.kde.org/show_bug.cgi?id=166009 and its name is ffast-math for qt
Jucato, maybe you should suggest to that person on the forum as well to compile qt without ffast-math as a possible fix I'll try now

Hope that helps.

Thanks, I think that might be it. I'll try ;]

Yes, it worked! Thanks, Jucato!