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Icons not appearing on LXPanel in Ubuntu 10.04

I have Ubuntu 10.04.2 LTS installed on an AMD K6-2 system.

When logging in with LXDE, certain icons such as the HP Toolbox and the Update Manager do not appear on the LXDE Task Bar when they should. The HP icon should appear after logging in (It automatically does with XFCE.) For the HP icon to appear, I have to manually run HPLIP Toolbox.

The various Update Manager icons (gray - package manager working, orange - updates available, red - important updates available) also do not appear at all under LXDE automatically and the only way to see if there are any updates is to manually run Update Manager after a period of time, which should not be necessary. These same icons also automatically appear under XFCE.

Is there something that I can look at to see why these are not appearing? I know there is a file /etc/xdg/lxsession/LXDE/autostart but I'm not sure if that has anything to do with it. Under "Desktop Session Settings", the only two items listed are Screensaver and PolicyKit Authorization Agent, neither of these are checked. When adding hp-toolbox to the autostart file, it completely launched the HP Toolbox in addition to displaying the icon, I only want the icon to appear and would launch hp-toolbox as needed.

The only icons that appear automatically after an LXDE login, are the Network Connection, ScreenLock and Shutdown icons.

It does not appear to be kernel-dependent as I had both the generic and 386 kernels installed on this (now have only the 386 installed) and the icons did not appear with either kernel used.

Note that this has been posted to two other forums going back two weeks, without any suggested remedies. I learned one other person has the same problem.

Thank you in advance for any suggestions.

Do you have the system tray loaded as one of your panel applets?

Quote:

Originally Posted by edwardp (Post 4272198)

I have Ubuntu 10.04.2 LTS installed on an AMD K6-2 system.

When logging in with LXDE, certain icons such as the HP Toolbox and the Update Manager do not appear on the LXDE Task Bar when they should. ... Under "Desktop Session Settings", the only two items listed are Screensaver and PolicyKit Authorization Agent, neither of these are checked.

I have installed Lubuntu 10.10 (Ubuntu with the LXDE desktop) http://lubuntu.net/
When I go to: Preferences > Desktop Settings, I have many things listed there, including Update Manager. For reference, here are the LXDE packages I have installed:

Code:

tom@desktop1:/data$ aptitude search lx

p  lx-gdb                                                        - Dump and load databases from HP 100LX/200LX palmtops                  

i  lxappearance                                                  - a new feature-rich GTK+ theme switcher                                

p  lxappearance-dbg                                              - a new feature-rich GTK+ theme switcher - debugging symbols            

p  lxappearance-dev                                              - a new feature-rich GTK+ theme switcher - development files            

p  lxc                                                          - Linux containers userspace tools                                      

p  lxde                                                          - Meta-package for the Lightweight X11 Desktop Environment              

p  lxde-common                                                  - the Lightweight X11 Desktop Environment configuration data            

p  lxde-core                                                    - Meta-package for the Lightweight X11 Desktop Environment Core          

p  lxde-icon-theme                                              - LXDE Standard icon theme                                              

p  lxde-settings-daemon                                          - LXDE settings daemon                                                  

i  lxdm                                                          - GUI login manager for LXDE                                            

v  lxdoom                                                        -                                                                        

i  lxinput                                                      - a program to configure keyboard and mouse settings for LXDE            

i  lxlauncher                                                    - Easy-Mode launcher for subnotebook like EeePC                          

i A lxmenu-data                                                  - freedesktop.org menu specification required files for LXDE            

p  lxmusic                                                      - The minimalist music player for LXDE                                  

i  lxpanel                                                      - a lightweight desktop panel for X                                      

i  lxpanel-indicator-applet-plugin                              - lxpanel indicator applet                                              

p  lxr                                                          - Linux Cross-Reference                                                  

i  lxrandr                                                      - simple monitor config tool for LXDE                                    

i A lxsession                                                    - a lightweight X11 session manager                                      

i  lxsession-edit                                                - configure what application start up automaticlly in LXDE              

v  lxsession-lite                                                -                                                                        

i  lxshortcut                                                    - easy way to edit application shortcuts                                

p  lxsplit                                                      - This program is a simple tool for splitting and joining files          

i  lxtask                                                        - process manager for Lightweight X11 Desktop Environment                

i  lxterminal                                                    - desktop independent vte-based terminal emulator

Note: The output was edited for brevity and relevance.
If you want to use LXDE exclusively, you should consider just installing Lubuntu in the future. It is fast and light, just like Ubuntu was back in the days of Warty 4.10 and Hoary 5.04. And it is totally free of that resource hogging scourge that is known as pulseaudio.

Interestingly, I do not have a /etc/xdg/lxsession/LXDE/autostart file. What I do have is a
/etc/xdg/lxsession/Lubuntu/autostart file. And here is the contents:

Code:

tom@desktop1:/data$ less /etc/xdg/lxsession/Lubuntu/autostart 

@nm-applet

@lxpanel --profile Lubuntu

@xscreensaver -no-splash

@gnome-power-manager

@pcmanfm --desktop --profile lubuntu

@/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1

/etc/xdg/lxsession/Lubuntu/autostart (END)

I am providing this info for reference in case it helps.
If you like LXDE (as I do) consider using Lubuntu for your future *buntu installs. I have been very happy with it.

BTW, I do all of my updates and package management tasks with apt-get from the terminal. This is one of the reasons why I appreciate the light weight Lubuntu.

Thank you for the replies so far.

The System Tray is listed as one of the panel applets. When I manually launched hp-toolbox, it opened and the HP logo appeared on the System Tray. When I then removed the System Tray, the HP icon disappeared, then when adding it back again, the hp icon reappeared. It is present so it appears to be working, somewhat, but why isn't it displaying the icons automatically...

As to using Lubuntu (or any Ubuntu variants) version 10.04 is the last version to run on this CPU, the AMD K6-2 is a non-CMOV CPU. A few other distros also dropped support for non-CMOV i686 and all i586 and below CPU's with their latest releases, so this is likely the last Linux distro to run on this hardware, unless I can find one that still supports older CPU's.

This is all that is in the autostart file on this system:

Code:

@xscreensaver -no-splash

@lxpanel --profile LXDE

@pcmanfm -d

@/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1

@xrandr -s 1024x768

As to the LXDE packages, the only ones not installed on this system are lxappearance-dbg, lxappearance-dev and lxpanel-indicator-applet-plugin. I did not check for lxappearance-dbg and -dev, but the distro does not include lxpanel-indicator-applet-plugin.

Quote:

Originally Posted by edwardp (Post 4273002)

As to using Lubuntu (or any Ubuntu variants) version 10.04 is the last version to run on this CPU, the AMD K6-2 is a non-CMOV CPU. A few other distros also dropped support for non-CMOV i686 and all i586 and below CPU's with their latest releases, so this is likely the last Linux distro to run on this hardware, unless I can find one that still supports older CPU's.

You may want to consider using Slackware. According to the system requirements page at Slackware.com:

Quote:

Slackware ... will run on systems as far back as the 486.

http://slackware.com/install/sysreq.php
Slackware is also much lighter on system resources than the increasingly bloated Ubuntu. Slackware with the XFCE or Fluxbox should run ok on your system. You may even be able to use KDE, although KDE will use more of your system's resources.

Zenwalk (based on Slackware) is very fast and light. The Zenwalk site says the minimum system requirements include a Pentium III CPU:
http://zenwalk.org/ I just installed the Zenwalk 7.0 RC on my laptop and it is very good. It is also the first distro to ship with the newest XFCE 4.8 desktop.

Debian also supports systems as far back as i386 CPUs.

The status has not changed. Icons are still not appearing in the System Tray.

There is nothing I can look at???