Linux is a high-profile computer operating system. The Raspberry Pi can run one of a number of Linux distributions, the most pupular being Raspbian (Debian-based) and Arch Linux.

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Live streaming of Android phone in raspberry PI using android app

I want to do live streaming of my presentation in raspberry PI through my android phone. Please help me. I am new in this.
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Raspberry Pi OS is not starting after executing bad Shell Script [duplicate]

Today I was trying to setup Owncloud in my Raspberry Pi, then I stuck when there is need to giving ownership or adding Owncloud file to www-data user and group. After trying all possible options I ...
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1answer
23 views

Verify working of I2C bus though command

I am trying to verify I2C bus through command (i2c tools) only. For this purpose I detect my I2C buses as follows ls -l /sys/bus/i2c/devices/i2c* lrwxrwxrwx 1 root root 0 Jan 27 ...
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1answer
44 views

making WiFi adapter run in dual mode - STA and AP

I am trying to make RaLink RT 5370 WiFi adapter run in dual mode - station as well as AP. I have tiny core linux installed on PI, built on top of 3.18.10 linux kernel version. I have been able to make ...
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1answer
37 views

I am using hih9000 series temperature & humidity sensor in that first 2 byte for humidity data and last 2 byte for temperature how can i decode that

import smbus import time import datetime #SMBus(0) - Raspberry Pi Model A #SMBus(1) - Raspberry Pi Model B bus = smbus.SMBus(1) #I2C address of sensor address = 0x27 def temp(): #rvalue0 = ...
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27 views

Rasp Pi PPTPD Service Not Starting on Boot

I have configured the PPTPD serice on my Pi and it works well. When I reboot the Pi the PPTPD service is not starting automatically. When seaching Google there are many ways suggested. Should I use ...
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1answer
37 views

Preparing/setup a SD card with NOOB using Linux

The stages for preparing a SD card with NOOBS describe at https://www.raspberrypi.org/help/noobs-setup/ are amid for Windows and Mac. At least, the part when formating the SD card is different in ...
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3answers
37 views

how to run GDM on raspberry pi 2

I need to run GDM on raspberry pi 2 with a fresh arch linux. I installed: xf86-video-fbdev xorg-xinit gdm I created a ~/.xinitrc containing: exec gdm But when I use startx I get some text then ...
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47 views

Manually mounting ext hdd works, mounting via fstab fails

I have 2 external HDD connected to my Raspberry Pi 2. One [NTFS] (auto)mounts and flawlessly. The other one does not mount via /etc/fstab and returns a filesystem error but mounts when I manually ...
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32 views

Controller Not connecting to “Mac adress” with bluetoothctl (connect cmd)

Hy, I'm trying to use a 8bitdo Controller on a Raspberry Pi 2, I read many posts on forums, and tried several things but i still don't manage to get it to work. Here is my problem. I followed the ...
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3answers
110 views

Connecting raspberry pi 2 to pc without internet

I want to be able to run a server (created with python sockets) on a raspberry pi 2 and connect to a client running on pc via wifi without having a connection to a router or to the internet. I've ...
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1answer
30 views

Tkinter on linux start up

I put a python Tkinter (GUI library) program on startup (/etc/profile) for my Raspberry Pi Linux and the program just has a label. Now i restart my raspberry pi and it's on my screen without any close ...
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1answer
84 views

how can i install LANTERN into RASPBIAN

purpose I bought a Raspberry Pi 2 B , and I want to build a lantern network at home. So I want to use the raspberry pi as a router what i know I know the lantern for linux version is based on ...
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63 views

Raspberry Pi install screen - Internal Error, ordering was unable to handle the media swap

I am trying to install screen in my Raspberry Pi. If I run sudo apt-get install screen, I get the following error: E: Unable to fetch some archives, maybe run apt-get update or try with ...
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1answer
52 views

/var/swap file abnormally large

I ran this command because my Raspberry Pi's SD card is full: sudo find /var -type f -a -printf '%s %p\n'| sort -nr | head -10 The output: 104857600 /var/swap 46641296 ...
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1answer
68 views

Disk full but NCDU shows only 22.2 mb used

I have a Raspberry Pi that is running a bunch of scripts 24/7. Recently it has been giving me errors because the Disk is full. I checked /var/log and there were no gratuitously large files there. I ...
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1answer
27 views

how to swap dbus versions in rpi/linux?

DBus version installed: 1.10.6 Programs look at 1.1.1. How to get rpi to look at newest DBus? RPI Project/programs: alertR Home Alert System via github. Current status: 12/30/2015 14:26:08 INFO: ...
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329 views

rPi 'no installation candidates', updated repositories, no change

So, I tried to install chromium on my rPi B+, running raspbian. I encountered 'no installation candidate', and the Internet recommended updating my repo files. So, I did so, expecting the error to be ...
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25 views

How to change the font size in Raspbian LXDE

How to change the font size in Raspbian LXDE? I've already tried the right-click on the desktop menu approach. That changes some fonts, most in fact. But the Konsole menu fonts are still big. Given ...
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2answers
126 views

Build custom Raspbian Jessie distribution image from source

I am wanting to generate a custom image of Raspbian Jessie (primarily modifying the UI and adding some extra packages). Thusfar, I have taken the image provided by the Foundation, modified it 'after ...
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1answer
160 views

Rpi can't see external hard drive

I got stacked. I have a Raspberry Pi 2 Model B with OSMC installed on it. I want to connect an external drive (Seagate Backup Plus 1TB) to it. I connected it through a usb hub and there is an ...
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3answers
194 views

Raspberry Pi Email Notifier Python Script not working

I followed the instructions on Adafruit's Website to no avail. The Python script keeps spitting out a ton of errors: Press Ctrl-C to quit. Traceback (most recent call last): File "checkmail.py", ...
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2answers
62 views

Energy profiling tools for linux

I was wondering if you can give me any tools for energy profiling in linux. I'm going to use it to compare between two algorithms that are going to be used on a Raspberry Pi, and if possible, I need ...
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3answers
68 views

how to inspect Rasperry Pi 1A from Laptop (Ubuntu Linux 14.04)

I won a Raspberry Pi at a contest about 2 years ago. Finally I got the proper wire to connect it to my laptop, but it's not doing anything! The light goes on, but nothing appears in my operating ...
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1answer
105 views

Auto reload new images in feh image viewer

I am making a project about wireless notice board using an android app and a raspberry pi. I am using feh image viewer to display images as slideshow from a specific folder. The command I am using: ...
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1answer
44 views

Boot of device is slow when previous connected wlan network is unavilable

My boot time increased if the connected wlan network is not available. If the connected network random_rants is not available it takes more time to boot. My etc/network/interface configuration is: ...
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32 views

How to detect wlan network is out of range

Is there any suggestion how to detect the wlan network is out of range ? I've successfully made my device to connect access points and connected other access points also. I'm using the ...
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1answer
25 views

Setting Rasp Pi screen resolution remotely for remote access

I have a Raspberry Pi that I am accessing via Screen Connect for remote access. Is there a way to set the pi so that when it boots up it uses a specific screen resolution? Editing the HDMI settings ...
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87 views

GTK “theme name” in Raspbian

I get the following message QGtkStyle was unable to detect the current GTK+ theme. when I run Konsole (a Qt based app). Following this, it seems the solution might be to gconftool-2 --set --type ...
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1answer
92 views

Freeing up cache when memory is low

I have my raspberry pi A+ in my embeeded project and every byte of memory is important when I've only got 128 MB to my CPU (I need 128 MB for the GPU because I use the camera module). Unfortunently ...
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41 views

xpra server error (error accepting new connection)

I'm having trouble connecting to my xpra server. I've installed Xpra version v0.14.10, on my raspberry pi 2 which running on Raspbian Jessie Distro. I connect to my RPi through putty with X11 ...
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1answer
127 views

How do I use the I2C bus?

I want to attach an I2C device; it has 4 lines (SCA, SDL, +, -). I understand I can connect the first two to pins 3 and 5, and the last two to various places. I also understand I can multiplex the ...
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1answer
60 views

Where is syslog being written?

I have an out of the box Pi. See below on what I have done. If I have <?php syslog(LOG_INFO,'where are you'); ?> in a PHP script, where the the message being logged? $ sudo apt-get install ...
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1answer
123 views

Cannot connect Raspberry Pi 2 to my computer (Ubuntu) using USB-to-Serial. No prompt shown

I was trying to connect Raspberry Pi 2 to my computer (Ubuntu) using USB-to-Serial. I have exactly followed the tutorial on the internet. I can find the usb device, and I am in the group ...
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1answer
77 views

Stop raspberry pi rc.local executing

I've added a security python script to the rc.local which unfortunately has a bug - This causes the pi to shut down on start up. Is there a way to bypass this script on start, or boot the pi into an ...
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2answers
176 views

How do I get the configuration and Module.symvers for a Raspbian kernel to compile a loadable module for my RPI 2?

I installed Raspbian using NOOBS_lite_v1_4.zip on a new microSD. After the initial install I ran sudo apt-get update sudo apt-get upgrade Running "uname -r" tells me I am running Linux version ...
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1answer
191 views

Raspberry Pi (raspbian) tick rate in HZ

How can I find the Linux tick rate of my Raspberry Pi 2. I have a Raspberry Pi 2 with Raspbian OS. Is it 100 or 1000 HZ ? Can I read it from the command line or a C program ? I want to know this ...
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11 views

Is there any way to run program on startup with root permissions in Raspberry Pi? [duplicate]

I am doing a project. In it I want to run program on startup with root permissions. Now I can run it after starting in the usual way and it's working fine. I tried many ways I saw on the internet and ...
0
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1answer
44 views

stty command lag and queue issue

I have plugged in a serial-USB, and run the command: stty -F /dev/ttyUSB0 38400 Then I am using PHP to send calls to the serial-USB like: file_put_contents("/dev/ttyUSB0", ...
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5answers
221 views

Why won't Linux Applications run when the file is executable?

So I've downloaded Eclipse IDE for Linux onto a usb flash drive, put the usb into the Raspberry Pi and tried to execute the eclipse application. It says that the file is executable but it still won't ...
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2answers
128 views

PHP USB serial port call from Windows to Linux

I have a piece of simple code that works on a Windows - WAMP environment, e.g. <?php `mode com3: BAUD=38400 PARITY=N data=8 stop=1 xon=off`; file_put_contents(com3, ...
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41 views

Is there a Raspberry Pi cluster OS that supports HOT SWAPPING or replacing dead units?

Thanks for the info if there is a raspberry cluster OS which can do this. I know Raspeberry's fail infrequently, but we could be building 99.99% redundant servers with cheap hardware if this was ...
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1answer
74 views

Creating a SD card image over network from unmounted/readonly rootfs [closed]

tl;dr Why is the /dev/mmcblk0 gone when i umount -l / or why can't i mount -r -o remount / ? Long text: I create backups from the SDcards of my RPIs from time to time. Until today i have to power ...
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2answers
1k views

Can't get a CIFS network drive to mount on boot

I have added a share in fstab to access a network drive with all my files on... fstab looks like: proc /proc proc defaults 0 0 /dev/mmcblk0p1 /boot vfat defaults 0 2 /dev/mmcblk0p2 / ext4 ...
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1answer
127 views

using os.path.expanduser(“~”) I am getting /root instead of /home/pi

While logged in as "standard" pi user, I am expecting the path to the user directory to be /home/pi – which is the case when I open File Manager, for example. However, when I run this script I get ...
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8 views

How can I resize my SD card? [duplicate]

Folks....I'm using a Raspberry Pi NOOBS origin SD card. I have already used this reference (http://www.raspberrypi-spy.co.uk/2012/06/resize-sd-card-partitions/) and gparted to resize the system ...
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2answers
1k views

Installing Kali Pi using all available storage space?

Is there any way to install kali linux for raspberry pi using all space that is available on the micrSD card initially or do you HAVE to go back later and resize partitions in order to utilize the ...
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1answer
24 views

Create my own Linux using Ubuntu Source [closed]

Customize Linux Ubuntu or Debian for my raspberry pi. How can I remove packages and Applications from the ubuntu or Debian? And Also I would like to know if its possible to modify the GUI (graphich ...
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1answer
69 views

Touchscreen Keyboard for the Mentally/Physically Challenged

Hi this is my first time posting but i wanted to ask a question. First of all i'll outline my situation. Im currently working on a project to make a portable computer system for people who are ...
2
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1answer
354 views

Raspberry Pi Linux, Android, and bridging it all together

I'm running a Raspberry Pi 2 with Raspbian as a central controller. I have an external modem that feeds the Pi an internet connection through USB, and now I'm trying to reverse tether the rooted ...