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Questions tagged [linux]

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.

6
votes
2answers
935 views

Raspberry Pi One Touch Audiobook *Updated*

I am looking for anyone to help me out. I am trying to build this for my blind grandmother for Christmas. **Update, since I couldn't get it to work I switched to this guys update python script, ...
2
votes
0answers
2k views

raspberry pi booting failed on custom kernel [closed]

hello I have compiled my custom kernel and pack initramfs into it. I have created two partition fat32 and ext3. fat32 contains bootloaders and kernel and ext3 contains rootfs. I have made a raw disk ...
3
votes
3answers
5k views

How to use Pi for standalone automation?

I want to use the Pi for standalone home automation. As such, the Pi must boot up automatically and run a Java program. I am running Debian Wheezy hardfloat. I have little Linux experience, what ...
11
votes
2answers
17k views

building kernel image (.img) including ramdisk

I have built my Linux kernel (3.0.1) for my Raspberry Pi with these following steps: 1. Downloading kernel source 2. tar xvf source.tar.bz2 3. downloading arm cross compilation tool. 4. tar xvf arm-...
4
votes
1answer
1k views

Periodic task in kernel module

I currently developing a gpio based kernel module for a custom protocol. As per requirements of protocol, I have to send data, clock and enable signal to output device throgh gpio. This data is 16-bit....
6
votes
0answers
2k views

Any CANopen adapters supported on the PI? [closed]

Does anyone know if there are any CANopen protocol converters supported on the Pi, or if ones that work under Linux could be ported to it?
8
votes
1answer
2k views

SSH not landing default user directory

I have recently installed Raspbian onto a Raspberry Pi. As part of the installation process I changed the user name and group from the default (pi) to my own (let's call it user) using usermod and ...
8
votes
2answers
7k views

How to use Java to read/write data to/from the header pins?

I just got Java running on my Raspberry Pi which took a lot more screwing around than i had hoped. I want to be able to read/write data to/from the header pins from Java. How can I do this? Do I need ...
6
votes
6answers
558 views

Playing around with servers

I want to get some hands on knowledge with linux servers (sine the last internship I applied for, required some experience with linux servers, but I had none), and I'm wondering if the RPi would give ...
5
votes
2answers
672 views

Is there a Linux image wich was compiled with -mfloat-abi=softfp?

I'm trying to find an OS that was compiled with -mfloat-abi=softfp to be able to use my precompiled ARM binaries on my Raspberry. Although I understand the reason why Raspbian and Arch are compiled ...
58
votes
8answers
47k views

Is it possible to run real time software?

I know it runs Linux and there are real time patches available for Linux. Would those patches work? Has anybody tried another real-time-os on the Raspberry Pi? The idea is to use the board for ...
15
votes
3answers
21k views

Can anyone recommend a simple image viewer?

My boss asked me to find a cheap mediaplayer for some stuff at work. That inspired me to build something on my own, using a Raspberry Pi. My plan is to use udev-rules, to detect usb/sdcard and then ...
39
votes
4answers
56k views

How do I disable suspend mode?

Whenever I leave my Raspberry Pi on overnight, it always seems to have entered some kind of suspended state. The red power light is still on but the light on the USB WiFi device is off and I can't ...
5
votes
2answers
4k views

ALSA volume ignored when beginning playback

I ran into an interesting problem today. I noticed I don't have a "Master" channel in amixer. I only have PCM. And changing the volume on PCM is really finicky. It seems only 85%+ is actually ...
50
votes
5answers
83k views

How do I determine the current MHz?

I've been trying to get an accurate reading of my Raspberry Pi's MHz, since I overclocked it in /boot/config.txt My /boot/config.txt is as following: pi@raspbmc:~$ cat /boot/config.txt arm_freq=900 ...
18
votes
2answers
11k views

What is Raspbian?

Being new to Linux, maybe this is a stupid question! I don't quite understand how this distro thing all works, is Raspbian just compiled packages with source code taken from the individual ...
31
votes
4answers
40k views

How do I load a module at boot time?

As stated in Why is my Audio (Sound) Output not working?, to initialise the sound driver, you must run sudo modprobe snd_bcm2835 every time you want to output sound. How do I get this to run on boot? ...
47
votes
4answers
34k views

Emulation on a Linux PC

How can I connect an SD card containing a Raspberry Pi OS to my Linux PC, and boot the OS in an emulator? Why won't VMWare work? What are the limitations of this method? Related: Emulation on a ...