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Questions tagged [raspberry-pi]

Ultra low-cost computer the size of a credit card. Also check the Raspberry Pi SE: http://raspberrypi.stackexchange.com/

Raspberry Pi logo
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The Raspberry Pi is an ultra low-cost computer ($25 for Model A and $35 for Model B). Features include:

  • RCA (composite) and HDMI video out
  • 3.5mm and HDMI audio out
  • 256 (Model As and old Model Bs) or 512 MB (Model B rev. 2) of RAM
  • Broadcom BCM2835 system-on-chip (SoC)
    • 700 MHz ARM11 processor
    • VideoCore IV GPU
  • SD card used as the boot device

For more information about the Raspberry Pi, please visit the Raspberry Pi FAQ and the Raspberry Pi SE.

Schematics

schematic
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Image

image of a pi
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1747 questions
44
votes
6 answers

How do I set DNS Servers on Raspberry Pi?

I want my Raspberry Pi to use OpenDNS to resolve domain names. How can I modify this setting?
Josiah Sprague
  • 874
27
votes
5 answers

iptables/1.8.2 Failed to initialize nft: Protocol not supported

I'm having a problem using iptables on my Raspberry PI. I've just downloaded a fresh version of Raspbian Lite on my PI and all I'm trying to do is check my iptables rules but it's not working and I'm getting this error:>> iptables -Liptables/1.8.2…
Kenan
  • 271
27
votes
6 answers

What do I need to do to have my Raspberry Pi host a webpage with dials indicating CPU temperature, CPU load, etc., in real time?

I am good with Unix commands and scripting, but I have nearly no web experience. I have a script that grabs metrics I’m interested in, like CPU load or system temp and updates a file every 10 seconds. I would like to point my iPad to a local website…
jake9115
  • 1,249
24
votes
4 answers

TigerVNC viewer: no matching security types

I'm trying to remote control the desktop of a Raspberry Pi (Raspbian Jessie) from a Samsung Chromebook (ARM Arch Linux). The VNC server running on the Pi is RealVNC. The VNC viewer on the Chromebook is TigerVNC I'm getting the following error when I…
rodrunner
  • 529
22
votes
8 answers

How to make Raspberry Pi use an external USB sound card as a default

Does anyone know how to change the sound card boot priority? All tutorials are telling me to edit /etc/modprobe.d/alsa-base.conf, but the file is missing in Raspbian Jesse.
Carl Hudson
  • 323
21
votes
3 answers

How to tell which services run at startup on Raspberry Pi? (raspbian)

I have some services that run on boot but I've actually forgotten how I set them up! If I want to change their activity how might I do that? For instance, maybe I want to disable a service from starting on boot or maybe I want to start it using a…
user1502186
  • 323
21
votes
6 answers

can I display a JPG or PNG to the framebuffer (/dev/fb*)?

I know I can capture the framebuffer in linux using something like cp /dev/fb0 ~/myimage and re-display that by coping back to the device like so cp ~/myimage /dev/fb0. What format is the framebuffer image data in? and how would I go about…
ndmweb
  • 391
21
votes
2 answers

Bluetoothctl connects and disconnects repeatedly

I am using a Raspberry Pi Zero with a Iot pHat and was able to ssh into the Pi using a USB cable using this tutorial. I then set up my home WiFi with the pHat. Then I powered up the Pi with a separate power source. I could then ssh into the Pi…
Jacolack
  • 313
20
votes
4 answers

How do I auto mount a USB drive that all users can write to?

I'm trying to set up a Raspberry Pi to run BitTorrent Sync to back up my files to an external hard drive, but I'm running into some frustrating issues. First, I need to set up the USB hard drive to auto-mount on boot, because the power frequently…
Josiah Sprague
  • 874
18
votes
1 answer

Starting and stopping X11 and LXDE from command line

I have a Raspberry Pi with Debian Wheezy (Raspbian) and so far I've managed to learn quite a lot about Linux just playing around, but I have a few questions for all you seasoned Linux pros out there. 1) From command line, if I execute startx, X11…
radian
  • 203
18
votes
5 answers

Force spin-down of external hard-drive on linux (raspberry pi)

I'm currently setting up a home-server using a Raspberry Pi with an external hard-disk connected via usb. However, my hard-drive will never spin down when being idle. I tried already the hints provided at raspberrypi.org ... without any…
user258346
  • 193
18
votes
5 answers

Wired to wireless bridge in Linux

I am attempting to set up my Raspberry Pi as a bridge, using Debian wheezy. I have a hostapd.conf: (some details changed for security, and yes, I know WEP is no…
adrianmcmenamin
  • 514
15
votes
6 answers

Raspberry Pi SSH Lag

Yesterday I got my Raspberry Pi B+, which I use via SSH. Sometimes the SSH typing takes about 5s and more to respond with an visual feedback after a time of idleness, after that lag everything just works fine. (I started typing the moment the gif…
TimKaechele
  • 259
14
votes
1 answer

How to share a folder as an USB mass storage device (from a raspberry pi)

I'd like to do something quite simple ... in my mind. I've got an "old" photo frame with an usb port and SD card slot (but without networking) that I would like to keep in sync with my NAS "Photo folder" Since I'm looking forward to buy a PI, I'd…
Cerber
  • 257
13
votes
2 answers

Debian apt-get update 404 not found error

My Raspberry Pi 3 is having problems. When I try to run apt-get update, I get a 404 not found error. I am very new to Linux and I am not sure what is wrong. Here is the error code: pi@raspberrypi:~ $ sudo apt-get update Ign…
mteam88
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