Problem: ubunbu安装nvidia显卡驱动后黑屏
导致黑屏原因：
运行完如下命令后，系统就呵呵了
sudo add-apt-repository ppa:xorg-edgers/ppa sudo apt-get update sudo apt-get dist-upgrade sudo apt-get install nvidia-current
This is a simple and short tutorial on how to set up Kinect for your Linux Mint 12 (It also should work fine with Ubuntu 12.04 or 12.10). For this task OpenNI Framework is going to be used. The official short description of OpenNI is :
The OpenNI Framework provides the interface for physical devices and for middleware components. The API enables modules to be registered in the OpenNI framework and used to produce sensory data. Selecting the hardware or middleware module is easy and flexible.
This Tutorial will use the NITE middleware to enable skeleton tracking.
To install KInect with OpenNI and NITE please follow the next 5 steps, with your Kinect Unplugged.
Step 1 - Install Required support library
First step is to check if you have all the needed libraries, and if they are up to date.
sudo apt-get install libusb-1.0-0-dev freeglut3-dev g++
If you have a Nvidia graphics card it's recommended to have the latest drivers: Instruction here
Step 2 - Create a folder for holding the download and the installation
I recommend to create a 'kinect' in your home folder:
cd ~ mkdir kinect
Step 3 - Download the OpenNI , NITE
It's going to be necessary to download to the created folder the latest OpenNI Binary and the NITE middleware. Until the publication of this tutorial the most recent version available were :
Update 06-JUN-2012*
If you are using Ubuntu 12.04 make sure to have the following versions (I tried Openni version 2.1.0, not working, but 1.5.4 works!):
Step 4 - Extract the downloaded zip to the desired folder
Now Extract The files and Rename the folders:
Your 'kinect' folder should have 3 zipped files.
cd ~/Kinect/OpenNI-unstable/Platform/Linux/CreateRedist$ ls sudo ./RedistMaker cd ../Redist sudo ./install.sh
cd ~/Kinect/SensorKinect/Platform/Linux/CreateRedist sudo ./RedistMaker cd ../Redist/ sudo ./install.sh
cd ~/kinect/NiTE-2.0.0/ sudo ./install.sh
Step 5 - Test it!
cd ~/Kinect/OpenNI-unstable/Platform/Linux/Redist/OpenNI-Bin-Dev-Linux-x86-v1.5.4.0/Samples/Bin/x86-Release ./Sample-NiSimpleViewer
Bug Fix:
" Failed to set USB interface "
this module allows Kinect to be used as a standard camera, so you can record video from it with the applications you're used to. Thus, it conflicts with OpenNI when trying to access the Kinect.
And then blacklisting to avoid it to be auto-loaded on boot:
sudo modprobe -r gspca_kinect sudo sh -c 'echo "blacklist gspca_kinect" > /etc/modprobe.d/blacklist-kinect.conf'
Reference:
http://igorbarbosa.com/articles/how-to-install-kin-in-linux-mint-12-ubuntu/
https://groups.google.com/forum/?fromgroups=#!topic/openni-dev/LZpcyCfh9UE
http://adriangerardcooke.com/kinect-on-ubuntu-12-04/
http://www.20papercups.net/programming/kinect-on-ubuntu-with-openni/
THIS NICE ARTICLE IS ORIGINALLY FROM OzBotz
http://www.ozbotz.org/opencv-installation/
(few modifications are made for 12.10 version ubuntu system here)
To install and configure OpenCV 2.4.1, complete the following steps. The commands shown in each step can be copy and pasted directly into a Linux command line.
sudo apt-get remove ffmpeg x264 libx264-dev
sudo apt-get update sudo apt-get install build-essential checkinstall git cmake libfaac-dev libjack-jackd2-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libsdl1.2-dev libtheora-dev libva-dev libvdpau-dev libvorbis-dev libx11-dev libxfixes-dev libxvidcore-dev texi2html yasm zlib1g-dev
sudo apt-get install libgstreamer0.10-0 libgstreamer0.10-dev gstreamer0.10-tools gstreamer0.10-plugins-base libgstreamer-plugins-base0.10-dev gstreamer0.10-plugins-good gstreamer0.10-plugins-ugly gstreamer0.10-plugins-bad gstreamer0.10-ffmpeg
sudo apt-get install libgtk2.0-0 libgtk2.0-dev
sudo apt-get install libjpeg8 libjpeg8-dev
cd ~ mkdir src
cd ~/src
wget ftp://ftp.videolan.org/pub/videolan/x264/snapshots/x264-snapshot-20120528-2245-stable.tar.bz2
tar xvf x264-snapshot-20120528-2245-stable.tar.bz2
cd x264-snapshot-20120528-2245-stable
./configure --enable-static make sudo make install
IMPORTANT: If you are running a 64-bit version of Ubuntu, you must configure x264 as shown in the following command
./configure --enable-shared --enable-pic
The -shared and -pic options might also be required when you compile for some other architectures, such as ARM. You know you need these options if you get the following error when compiling OpenCV:
[ 25%] Building CXX object modules/highgui/CMakeFiles/opencv_highgui.dir/src/bitstrm.cpp.o Linking CXX shared library ../../lib/libopencv_highgui.so /usr/bin/ld: /usr/local/lib/libavcodec.a(avpacket.o): relocation R_X86_64_32S against `av_destruct_packet' can not be used when making a shared object; recompile with -fPIC /usr/local/lib/libavcodec.a: could not read symbols: Bad value
cd ~/src wget http://ffmpeg.org/releases/ffmpeg-0.11.1.tar.bz2 tar xvf ffmpeg-0.11.1.tar.bz2 cd ffmpeg-0.11.1
./configure --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grabmake sudo make install
IMPORTANT: Just like with x264 in the previous step, you must configure ffmpeg with the -shared and -pic options if you are running a 64-bit version of Ubuntu or some other architectures, such as ARM.
./configure --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-shared --enable-pic
cd ~/src
wget http://www.linuxtv.org/downloads/v4l-utils/v4l-utils-0.9.3.tar.bz2
tar xvf v4l-utils-0.9.3.tar.bz2
cd v4l-utils-0.9.3
./configure
make
sudo make install
cd ~/src
tar xvf OpenCV-2.4.2.tar.bz2
cd OpenCV-2.4.2/ mkdir build cd build cmake -D CMAKE_BUILD_TYPE=RELEASE ..
make sudo make install
export LD_LIBRARY_PATH=/usr/local/lib
Add the command to your .bashrc file so that you don’t have to enter every time your start a new terminal.
Alternatively, you can configure the system wide library search path. Using your favorite editor, add a single line containing the text /usr/local/lib to the end of a file named /etc/ld.so.conf.d/opencv.conf. In the standard Ubuntu install, the opencv.conf file does not exist; you need to create it. Using vi, for example, enter the following commands:
sudo vi /etc/ld.so.conf.d/opencv.conf G o /usr/local/lib <Esc> :wq!
After editing the opencv.conf file, enter the following command:
sudo ldconfig /etc/ld.so.conf
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH
After completing the previous steps, your system should be ready to compile code that uses the OpenCV libraries.
The following example shows one way to compile code for OpenCV:
g++ `pkg-config opencv --cflags` my_example.cpp -o my_example `pkg-config opencv --libs`
Sample c++ file here, my_example.cpp, used for opening an image:
#include <stdio.h>
#include <opencv2/opencv.hpp>
using namespace cv;
int main( int argc, char** argv )
{
Mat image;
image = imread( argv[1], 1 );
if( argc != 2 || !image.data )
{
printf( "No image data \n" );
return -1;
}
namedWindow( "Display Image", CV_WINDOW_AUTOSIZE );
imshow( "Display Image", image );
waitKey(0);
return 0;
}
Once compiled, run command to see the sweetie :D
./my_example cLena.bmp
Problem Description:
Ubuntu 12.10 , Chrome Version 22.0.1229.94
For unknown reason it could not play any videos or sounds
and error "could not load plugin" reported.
Solution:
Run command in terminal :
rm -rf ~/.config/google-chrome/PepperFlash/
There are easier ways to force quit apps, of course.
Hit Alt-F2 to bring up the "Run Application" dialog, then type xkill there and hit enter.
先按Alt+F2
输入xkill会出现一个黑色小骷髅
把小骷髅移到程序上点一下就可以了
