Linux no sound after resuming from suspend/hibernate

This problem was annoying me under a Debian-based distro. I read a lot of tricks to solve that, some of them like to “install the latest kernel version”.

Anyway, at least for me the command below solved the problem:

sudo alsa force-reload

LaTeX Error: LaTeX2e command

When using one of the Lecture Notes stye for an article I faced the following error with LaTeX: ! LaTeX Error: LaTeX2e command \usepackage in LaTeX 2.09 document.

To solve that I changed the \documentclass{llncs} command to \documentstyle{llncs}.

For more informations why check out here.

That’s all.

ffmpeg Unknown encoder ‘libmp3lame’

I was trying to convert a .flv file to mp3 when using the command ffmpeg -i video.flv -acodec libmp3lame -ab 196k -ac 2 -ar 44100 audio.mp3 came up with Unknown encoder ‘libmp3lame’. It was because I did not install the ffmpeg from source and in the binary the –enable-libmp3lame was not defined. Ps.: To see what options are enabled just ffmpeg –help

To solve this problem I did the following:

• Installed the libmp3lame from source: wget http://easynews.dl.sourceforge.net/sourceforge/lame/lame-3.97.tar.gz; tar -xvf lame-3.97.tar.gz; cd lame-3.97;./configure; sudo make && make install
• Removed the pre-compiled ffmpeg installation: apt-get remove ffmpeg
• Downloaded its source: svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg
• Installed the source setting the –enable-libmp3lame option up: sudo ./configure –enable-libmp3lame; sudo make && make install
• And ffmpeg -i video.flv -acodec libmp3lame -ab 192k -ac 2 -ar 44100 audio.mp3 command should works properly

ffmpeg -i video.flv -acodec libmp3lame -ab 196k -ac 2 -ar 44100 audio.mp3

Page-crunch, the Linux Fineprint.

Since I’ve been using only Linux for some years I missed Fineprint a lot. It is a nice app and I’ve never found nothing similar for Linux, even with the raw psutils (that I’ve been struggling with for some weeks long) I could not have the things done the way I would like.

I was pleased with Page-crunch, a tk-based application that does a front-end to psutils with everything I wish to print pdf files maximizing the useful space. Check out the following screenshot, the interface displays the enough options for printing and visualization. With some tests, for sure, Page-crunch will provide you a nice print work. Voilà.

Ubuntu : Real transparence in Terminator

Hi fellows,

Following a tip to configure the terminator terminal to real transparence.

First, if you don’t know terminator take a look (it’s a useful tool!)

Once you have installed it:

sudo apt-get install terminator

You’ll see that even if you mark “real transparency” through righ click in the screen > Edit Profile > Appearence tab, it didn’t work.

So the workaround to this issue is to use transset-df tool that turn any window transparent:

Unfortunately, the transset that are found in apt is not the right one, so you should install it from the source:

wget http://forchheimer.se/transset-df/transset-df-4.tar.gz
tar -xvzf transset-df-4.tar.gz
rm transset-df-4.tar.gz
cd transset-df-4/
make
make install
rm -r transset-df-4

Once installed, create a launcher to terminator (at /usr/local/bin for instance):

sudo touch /usr/local/bin/terminator
sudo chmod +x /usr/local/bin/terminator

And paste the following commands (using vim with sudo for instance):

#!/bin/sh
exec /usr/bin/terminator $@ &
sleep 2s
transset-df --id `xprop -root |
grep "_NET_ACTIVE_WINDOW(WINDOW): window id # " |
grep -o -E -e 0x[a-z0-9]+` 0.75 &> /dev/null
exit

Now run terminator from this launcher and it should be transparent!



Some useful shortcuts:

Ctrl + Shift + O: Split horizontally
Ctrl + Shift + E: Split vertically
Ctrl + Shift + P: Turn to the previous terminal view (ou Ctrl + Shift + Tab)
Ctrl + Shift + N: Turn to the next terminal view

Ctrl + Shift + W: Close the current terminal view
Ctrl + Shift + Q: Quit terminator

If the Terminator’s title-bar is showing “None” in spite of the current directory it is because your environment does not know the variable PROMPT_COMMAND. So, add the following line to your .bashrc file:

PROMPT_COMMAND=’echo -ne “33]0;${USER}@${HOSTNAME}: ${PWD/$HOME/~}07″‘

See ya

See more:

http://crunchbanglinux.org/forums/topic/1003/terminator-transparency-workaround/
https://help.ubuntu.com/community/TransparentTerminals