Unanswered Questions
873 questions with no upvoted or accepted answers
10
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0
answers
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Cannot Use SPI frequency above 500 kHz
I am running Arch Linux ARM on a Raspberry Pi 2 Model B, and I am attempting to communicate with a TFT display. I am writing a kernel module to interface with the display using SPI, and it works, but ...
- 60.1k
7
votes
1
answer
2k
views
How to start xorg on a physically connected display via SSH?
The pi is configured to start into text mode so that no xorg libraries are loaded during normal operation. Yet I would like to be able to occasionally run an xorg desktop session when connected to an ...
CommunityBot
- 1
5
votes
0
answers
3k
views
Why doesn't extract-vmlinux work with Raspbian's /boot/kernel*.img?
To monitor if a reboot is necessary, I wanted to compare the version of /boot/kernel*img against the version of the running kernel.
To get the kernel version of a compressed linux kernel image (...
- 1,210
4
votes
1
answer
2k
views
How to change default apache folder to Flash drive on Raspbian?
I have apache 2.4 on my raspberry pi and need to change DocumentRoot to flash drive folder.
But I have 403 Forbidden.
In apache logs:
AH01630: client denied by server configuration: /media/pi/www/...
CommunityBot
- 1
3
votes
0
answers
77
views
RPI(2) Bare Metal: does GPU support text mode and what is the default video mode?
I'm struggling with trying to find any information about text-mode capability in Raspberry Pi. I'm reading about decompression, 3d, etc. fancy features but I'd like to learn about fundamentals:
Is ...
- 131
3
votes
0
answers
169
views
Enabling SPI card reader in device tree on Raspberry Pi
Good evening,
I have MFRC522 card reader. It works well with generic spidev kernel-level driver and high-level python driver. However, as I wanted to learn device trees in linux, I tried to bind ...
- 81
3
votes
0
answers
2k
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Error while Starting Raspbian
Enviroment:
Device: Rasberry Pi 2
OS: Raspbian
Last sign of life: 8.March 2021
Problem
Since 8th of march I've got no message of my raspberry pi, so I get them and try to boot with a connected monitor....
- 141
3
votes
2
answers
8k
views
PiHole Not Resolving Local DNS Entries for clients with static IPs
I have a Raspberry Pi 2 running Pi Hole 5.2.2 and Cisco Linksys E2000 router running DD-WRT v24-sp2 (08/12/10) std-usb-ftp
I want to be able to have PiHole resolve a DNS entry such as MyDevice to an ...
CommunityBot
- 1
3
votes
0
answers
331
views
Coin acceptor misbehave when connected on raspberry pi
I have a Bill note acceptor and a Coin acceptor, and I have wrote a program in C# to communicate with these two machines, and it worked perfectly on windows, after that I migrated this application to ...
- 131
3
votes
0
answers
673
views
Moonlight (Wifi): Dropped Frames, Multiple Errors, Crash
Casting any media from a PC to the RPi, other than on a Ethernet connection, results in a large number of errors, and an eventual crash. Streams are very responsive, and smooth at 720p at 30fps, but ...
- 31
3
votes
0
answers
136
views
service for mongodb 3.4 server on SLES 12 SP2 Doesn't start(Raspberry Pi 3)
The link below was the source:
https://software.opensuse.org/download.html?project=server:database&package=mongodb
It was the only mongodb 3.4 which could be installed correctly but unfortunately ...
- 131
3
votes
0
answers
157
views
Implementing a system call for CPU hotplug on RPI3/ModelB
My goal is to implement a system call in linux kernel that enables/disables a CPU core.
First, I implemented a system call that disbales CPU3 in a 4-core system.
The system call code is as follows:
...
- 11.9k
3
votes
0
answers
725
views
Disable Screensaver of XServer on Raspbian Jessie Lite
I setup a Raspberry Pi 2 with Raspbian Jessie Lite in read only mode. To run a Qt application I installed the packages "xserver-xorg" and "xinit". I am starting the application automatically after ...
- 31
3
votes
0
answers
2k
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Pi 2 Windows IoT support for onboard CSI camera port
I am working on IoT technology, in one of my project I want to connect to on-board camera with Raspberry Pi 2 having Windows 10 IoT core.
Two months back I found Windows IoT on the Raspberry Pi 2 ...
- 60.1k
3
votes
0
answers
3k
views
Arecord not working with USB Microphone anymore
Before I start, I'd like to tell you that I've used arecord in the past with the Raspberry Pi 2 using the same USB Microphone and it has worked just fine. For some reason, it doesn't seem to work ...
- 334