LXDE Forums

Hello, i just installed Ubuntu 12.04 "Precise Pangolin" Minimal CD 27MB, kernel 3.2.0-35-generic-pae, with LXDE.

Problem:
The taskbar is not visible on my computer.
I can access it by going into the bottom left corner and clicking: then, the Menu appears.

10 days ago I had installed Ubuntu 12.10 "Quantal Quetzal" Minimal CD 28MB with LXDE on the same computer, and didn't have this problem.
Since then it broke, and i realised that it was not a "stable" version, nor Long Term Support. That is why i re-installed Ubuntu 12.04 instead.

PS: I searched but couldn't find how to know which version of LXDE i have.

In the first place, 12.10 is the latest stable release of Ubuntu or Lubuntu. From your post I take it that you have a minimal install of Ubuntu 12.04 LTS with the lxde desktop. With the minimal install I'm not sure what you have installed. Have you updated using the terminal?

Hello,
I have updated yes. I realized today that it's probably just my screen resolution which is not right. Funny that it's not the same as in 12.10. I'm trying to change it with xrandr but i don't manage. It might be because i'm not doing it properly: i tried the command line, now i'll try the /etc/X11/xorg.conf file. Or because i didn't install the monitor's driver.

So either way, it's not an LXDE issue, i can close the thread. Sorry about that. It was surprising

edit : i didn't have a /etc/X11/xorg.conf file, i'm creating it now.

If anybody had the same problem, here is how i fixed it on my computer (i wrote it down so i can refer to it if i have a problem, or need to reinstall and do it again) :

to see my hardware, do:
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09)

1. First, i created the /etc/X11/xorg.conf file by doing:
Ctrl+Alt+F2 (terminal-only mode, closing the graphical user interface)
sudo stop lightdm
sudo Xorg -configure => this command said "Number of created screens does not match [...]." ignore it.
sudo start lightdm
Ctrl+Alt+F7 (back to graphical user interface)
This creates the ~/xorg.conf.new file, that you move:
sudo cp ~/xorg.conf.new /etc/X11/xorg.conf

2. Then i restarted the graphic server (is this necessary??) with
sudo /etc/init.d/lightdm restart
which bugged and stayed blocked, so i had to Ctrl+Alt+Del
And i used "automatic detection" to populate the /etc/X11/xorg.conf file:
sudo dpkg-reconfigure xserver.org
and in the end, do Ctrl+Alt+Backspace to restart X

3. install the latest Intel GPU drivers with:
sudo apt-add-repository ppa:glasen/intel-driver
sudo apt-get update
sudo apt-get install xserver-xorg-video-intel
Then, restart lightdm with:
Ctrl+Alt+F2
sudo stop lightdm
sudo start lightdm
=> and the problem was solved !

4. Then, i can change the screen resolution with
xrandr --auto
or
xrandr -s 1024x768

Excellent. Thanks for providing your solution so that other people can benefit.

Oh i'm so glad I wrote this a year and a half ago.
New install, same problem. The solution is here!

PS: Step 2. is not necessary.