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1500 questions
13
votes
1 answer
Is it safe to remove the xserver?
I do not use a digital monitor and no TV either with my Raspberry Pi. I would like to remove unnecessary packages to save disk space and memory consumption. I would like to preserve the possibility of forwarding X to an SSH client.
Is it safe to…

Bengt
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13
votes
6 answers
How can I reduce the writing to log files
A common worry of Raspberry Pi users is the wearing out and destruction of their SD card (which have limited write cycles) by too many writes. The experience reported by users supports this assumption.
Logging is one source of frequent write…

Frank Breitling
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13
votes
4 answers
Can I have 1 processor core just for my program?
I have to time the time difference between high -> low and low -> high signal edge on GPIO pins. I have written simple program that does this. After running it for some time I was quite happy with the result (0,01 s variations). But from time to…

NonStandardModel
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13
votes
3 answers
Why are certain resistors not populated on the device?
I just took a closer look at my board, and a few of the resistors have pads but are not actually soldered on. It seems R4, 5, 7 and 10 by the GPIO header are absent, as well as 36 and 37 on the other side by the USB. Does anyone know what happened…

teraquendya
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13
votes
2 answers
Qt applications don't work due to libEGL
I am developing some (simple) GUI applications for the RPi2 in Qt5.
The setup:
The code development is performed on a Windows laptop using Netbeans + Qt Designer and remotely built on the RPi running Raspbian Jessie with tools that come with it (g++…

Andrey Pro
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13
votes
4 answers
How to boot into own python script (GUI) only?
I have the following problem: Using a RaspPi 3B running Raspbian Jessie (version 4.4.26-v7+) I would like the GUI of a self-written python script to be executed on startup.
I know that this question has been asked on this website as well as on…

Fantilein1990
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13
votes
1 answer
Pi Zero as HID: How to control PC Mouse from Pi Zero through USB?
I'm asking this because I haven't found anything clear about this subject after searching for days. So, I'm sorry if the question already exists.
I'm working in a project, just for fun, where I want to control the PC mouse from the Raspberry Pi. The…
user54774
13
votes
1 answer
Where is the wifi password stored on Raspbian?
Say I type in my wifi password and press "Remember" or something. It should store it, either as a hash or plain text, in a file somewhere.
Where is that file?
Is it stored as a hash or plain text?

asdf
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13
votes
5 answers
Where can I share my cool scripts?
I've written a few (what I consider to be cool) bash scripts (that are specific to the Raspberry Pi), and I'd like to share them with the community.
Is there a jsfiddle-like site where I can put up the scripts?
Maybe even a community-based,…

Jim
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13
votes
4 answers
Java IDE for Raspberry Pi
Anyone know a good Java IDE for the Pi? I tried downloading Eclipse but it didn't work (probably because it's too heavyweight). I need an IDE with low RAM usage and low memory usage, just so it will actually work :) Help appreciated.

imulsion
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13
votes
5 answers
How Do I Change Pi-Hole's URL Path?
How do I change pi hole's URL?
It's currently 10.0.0.20/admin.
I want to use the /admin path for something else but couldn't find a way to change Pi-Hole's path to something else.

Michael Yochpaz
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13
votes
1 answer
Turning 'tvservice' on and off leaves screen blank
I'm running the Qt5 application on my raspberry pi and I would like to introduce some kind of a power-saving feature.
I don't use x11 or wayland, because I don't need it, but I use gles2 (OpenGL for Embedded Systems).
I want to use tvservice --off…

lewiatan
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13
votes
3 answers
Is there some kinda serial number available from OS level?
I would like to identify which RaspberryPI hardware instance is booting on my network.
I have plans for using a LOT (not just 10) of them as clients in a larger solution, but I would like to reuse the SD-image for them all.
Is there any kinda way…

BerggreenDK
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13
votes
1 answer
RasPi 3 - wlan0 not associated
I have two RasPi3, both on the newest Jessie and updated && upgraded. The problem is that both Pis can see networks but are not connecting to them.
sudo iwlist wlan0 scan
Gives me multiple networks including the one I want to connect to. Typing in…

BallerNacken
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13
votes
7 answers
Raspberry Pi 3 and 64-bit kernel, differences between armv7 and armv8
Is there any 64-bit kernel for Raspberry Pi 3? I looked around and from sources I check official page and following kernels are listed there:
NOOBS - this is installer, no OS by itself, right?
Rapsbian - just one download, so I assume 32 bit…

graywolf
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