Lubuntu 12.10: problems and solutions

In my ongoing quest for computing minimalism, I’m using the LXDE desktop environment (via Lubuntu) on my new laptop in place of XFCE, which (via Xubuntu) I’d been using for the past few years. I’m happy with it: it’s fast, flexible, and it doesn’t get in the way. It didn’t quite work right out of the box, though. The fixes were all simple, but not so easy to find.

My Lubuntu 12.10 desktop

It’s not really Lubuntu’s fault that things aren’t quite right. Most of its packages come from regular Ubuntu, and all the problems I encountered were due to Ubuntu packages that either contained bugs or didn’t specify all their dependencies.

I hope that if I write down the problems and fixes here, I’ll at least save someone else a late night.

Problem 1: No IBus IME indicator

If you use an IME for entering complex scripts (like, say, Japanese, as I do), you’ll notice that the indicator that shows the current input status is missing.

This is simply due to missing dependencies. The indicator applet uses Python, and needs a few libraries to work properly.

The solution is to install the following packages (via apt-get install or similar):

  • libappindicator1
  • python-appindicator
  • python-gconf
  • python-glade2
  • python-pexpect

Problem 2: Dead keys don’t work when IBus is used

If you use IBus in Lubuntu for the aforementioned complex script input, you might find that typing simpler scripts becomes impossible. For example, I use a keyboard layout that allows me to type AltGr + " followed by a to produce ä.

What I got instead was just a plain old a, at least in GTK apps.

The solution is to install GTK support for IBus, by installing these packages:

  • ibus-gtk
  • ibus-gtk3

Problem 3: No window shadows when using xcompmgr for compositing

This isn’t a serious problem. Openbox, LXDE’s window manager, doesn’t do compositing by itself. It’s easy to add compositing just by running a compositing manager like xcompmgr. This gives buffered windows, true transparency, and window shadows. Window shadows aren’t essential, but I find them helpful in making window ordering and edges clearer without wasting precious pixel space.

Version 1.1.6 of xcompmgr doesn’t draw window shadows with Openbox. The previous version, 1.1.5, does.

The solution is to install the older version and lock it. Version 1.1.5 can be found via (amd64 or i386 versions). Download it, then:

sudo dpkg -i xcompmgr_1.1.5*.deb
echo xcompmgr hold | sudo dpkg --set-selection

Incidentally, my settings for xcompmgr are:

xcompmgr -cCfF -r4 -l-5 -t-5

Apart from those small (now resolved) hassles, I’m really happy with Lubuntu so far.


  1. Fasih Rehman

    Wrote at 2013-06-07 00:00 UTC using Chrome 27.0.1453.110 on Linux:

    Paul – after upgrading to 13.04 – I decided to switch to LXDE from XFCE too. Xubuntu has some XFCE breakages which were not getting addressed. I have been using LXDE on VMs at work so I thought I would give it a try on my actual desktop. So far so good but it still is not perfect. I’m running LXDE with Thunar + xcompmgr + docky + launchy + conky. What was your reason for moving over?