[TerminalIPythonApp] Unrecognized flag: '-wthread'

Without this flag, the Mayavi plots lock up the UI and hangs. If you want to get the possibility back to rotate and play around with the plots, just start IPython the following way from now on:

ipython --pylab=qt

This will launch IPython with the Qt backend and threading. Using only –pylab does not include threading. For easy and quick access, add the following to a file named .bashrc in your home folder:

alias pylab='ipython --pylab=qt'

From now on you can launch IPython just by typing

pylab

in a terminal.

ImportError: No module named enthought.mayavi.mlab

Now, to avoid switching the import statement every time you switch systems, you can make Python check if one of the versions is installed during import. If it is not, we’ll tell it to try the other. This is done in this simple command:

try:
    from enthought.mayavi.mlab import *
except ImportError:
    from mayavi.mlab import *

Just replace any other similar import statements the same way and your code should once again be working across all your installations.

ALT + 8 = [
SHIFT + ALT + 8 = {
SHIFT + ALT + 7 = \
SHIFT + 4 = $

To set up these fixes, the first thing you need to do is to go to System Settings and Keyboard Layout (might be hidden under Region and Language) and select advanced options. Here you need to enable “Key to choose third level: Left Alt”.

The next is to run the following commands:

xmodmap -e "keycode 13 = 4 dollar 4 currency dollar onequarter"
xmodmap -e "keycode 16 = 7 slash 7 slash braceleft backslash"
xmodmap -e "keycode 17 = 8 parenleft 8 8 bracketleft braceleft"
xmodmap -e "keycode 18 = 9 parenright 8 8 bracketright braceright"

To store these settings permanently, create a file named .bashrc in your home folder and add them to this file.

In addition, the graphics card seemed to heat itself more easily with the noveau driver.

Sadly this lead me to realize that I would still have to use the proprietary NVIDIA driver to make use of my graphics card and the applications I use daily. Even worse, getting this installed would prove to harder than in earlier versions of Ubuntu. I don’t know if this is due to using Kubuntu or not, but if you should experience some of the same symptoms, here is how I fixed it.

First of all, the symptoms were as follows after installing the nvidia-current package:

• The computer started only with one display and with a very low resolution (640 x 480)
• Enabling the nvidia driver using jockey-kde or jockey-text resulted in errors such as
• ERROR: XorgDriverHandler.enable(): package or module not installed, aborting
• WARNING: modinfo for module nvidia_current_updates failed: ERROR: modinfo: could not find module nvidia_current_updates
• Finally, installing nvidia-current only gave the error:
• Module build for the currently running kernel was skipped since the
  kernel source for this kernel does not seem to be installed.

So, if you experience any of these, the reason is most likely missing kernel source and header libraries. The fix is thankfully simple, just run the following commands in a terminal:

sudo apt-get update
sudo apt-get purge nvidia-current
sudo apt-get install linux-source
sudo apt-get install linux-headers-generic
sudo apt-get install linux-image
sudo apt-get install nvidia-current
jockey-text -e xorg:nvidia_current

After this, if you get no errors, try to reboot and run

nvidia-settings

after booting. Now you should be able to set up and use your system with full graphics acceleration.

Good luck!

I’ll assume that you have a Linux system set up with sudo and mysql already installed. Fire up a terminal and type

sudo su

Open up ~/.my.cnf in your favorite editor (the ~ points to the root account now).

vim ~/.my.cnf

and add the following contents:

[client]
user = root
password = yourpassword

Follow up with logging out of root:

exit

And run sudo to start MySQL. Remember to use the -H option to point all requests for ~ to root’s home directory:

sudo -H mysql

It is a simple as that

—-

This is strange, since it worked fine on a laptop i tried to install Lighting on just a few days ago. But in any case, it works now, so if you want Thunderbird with Lightning on Ubuntu and are having trouble installing it, you might want to try this command in a terminal:

sudo apt-get install thunderbird xul-ext-lightning libstdc++5

That should do the trick.

to nameofbookmark

To install apparix in Ubuntu, type

sudo apt-get install apparix

in a terminal window.

After installation you need to set up the aliases “bm” for bookmarking and “to” for going to a bookmark by adding a few functions to your .bashrc file in your home folder (if you don’t have this file, you can create it yourself).

You’ll find the functions you need to add by issuing the command

apparix --shell-examples

in a terminal window. Copy everything below “Bash-style functions” except the “CSH-style aliases”. Paste this into your .bashrc file.

Open up a new terminal, cd to your directory of choice and type

bm mybookmark

to bookmark the folder. Afterwards you can go to any folder and type

to mybookmark

to go to your bookmark.

This tool is of course available for other Linux distributions too.

Fixing this is thankfully simple even though I keep forgetting. I guess this has to do with the fact that I’m only doing this once every six months.

If you’re having the same issue, open up a terminal and open the file “/etc/pulse/default.pa” in your favorite editor:

gksudo gedit /etc/pulse/default.pa

Change the line that says

load-module module-udev-detect

into

load-module module-udev-detect ignore_dB=1

Save and close the file.

Now, let’s restart pulseaudio and open alsamixer in terminal

pulseaudio -k
alsamixer

Use the arrow keys on your keyboard to bring down the PCM volume to about 50 % (or whatever suits your ears). Close alsamixer with ESC.

Now you should be able to enjoy your listening without blowing out your ears. Just note that whenever you are using your speakers and need them back at full volume, you might have to open up alsamixer again and bring the PCM volume back up.

Editing the default.pa file just makes pulseaudio respect your PCM setting. Otherwise it would set it to 100 % whenever you change the volume.

Although they call it a preview, it seems to be a very finished and good-looking product, and I finally might get rid of those annoying sudden playback stops I experienced while Spotify under Wine. At least I haven’t experienced any of them yet.

I wish they would release it as an open source application as well, but for now, I’m very satisfied seeing that the money I’m spending on it pays off for Linux users as well. At the moment though, it seems like it is only packaged for Ubuntu and Debian, but hackers using other distros out there are probably going to figure out how to run it on other machines.

Now I’ll be hoping for a native version for N900, as most of the projects attempting to run Spotify on Maemo appear to be left unusable each time Spotify updates their API.