Unanswered Questions

7,800 questions with no upvoted or accepted answers
9
votes
1answer
1k views

Autologin into a webpage via the default GNOME-Webbrowser

I'm trying to call an HTML page like this with the Raspbian's default web browser and it leads me just to the default login-page. Neither does it with Midori on the desktop. When calling the exact ...
9
votes
2answers
1k views

Pi won't boot after initramfs update

I have been trying to get Raspbian Jessie, installed from the image to boot with an encrypted root partition. I was successful in following the guide here. When I boot the Pi, it drops to an ...
8
votes
0answers
13k views

How Can I Emulate An x86 CPU on a Raspberry Pi with Qemu?

!!DISCLAIMER!! I am aware that this question has been asked before HERE, but after having followed that question step by step, troubleshooted on my own and having done plenty of research on the ...
7
votes
0answers
369 views

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 ...
7
votes
0answers
515 views

connmanctl having problem with complex passphrase

The built in WiFi module seems to work fine, as it can connect to both of my open networks I created for testing, i.e. the 2.4GHz, and the 5.0GHz ones. If I set a simple passphrase (i.e. contains ...
7
votes
0answers
567 views

USB OTG on Compute Module 3

Has anyone ever tried configuring the USB of the Compute Module 3 as USB OTG? In the default kernel (Raspbian Stretch - Kernel7), support for usb otg appears to be disabled. Has anyone managed to ...
7
votes
1answer
7k views

Running Selenium & Firefox & geckodriver on Raspberry Pi 2 Model B

I'm trying to run Selenium on my Raspberry Pi 2 Model B but I'm having trouble finding a compatible combination of versions of Selenium, Firefox, and geckodriver. (I've already run sudo apt-get ...
7
votes
1answer
1k views

How to start Xorg while showing splashscreen?

I'm creating a simple device with a Raspberry Pi and a touchscreen display connected to it. On boot, I want to show a loading image (a simple gif or jpg) while X is starting. Then a chromium-browser ...
7
votes
1answer
1k views

Thermal printer with Raspberry Pi 2 outputs only Chinese chars

Following thermal printer + raspi2 tutorial for printing images (https://learn.adafruit.com/networked-thermal-printer-using-cups-and-raspberry-pi/connect-and-configure-printer), I've already connected ...
6
votes
0answers
709 views

How fast can GPIO pins toggle on the Pi 4?

Benchmarking of the Pi 4 using the Python GPIO Zero library shows a significant increase in the frequency of toggling a GPIO pin on and off compared to previous models. This result is attributed to ...
6
votes
4answers
2k views

Raspberry Pi - Rainbow screen

I'm trying to boot up Exton's Android build on Raspberry Pi 2, but I seem to be getting the rainbow screen. Here is what I have - 4 partitions as follows boot which has 512 MB, flagged as bootable ...
5
votes
0answers
49 views

Is debug logging (to file or UART) available for firmware (start4.elf) portion of boot? [Pi4]

Is there any place that debugging messages get logged during the start4.elf portion of the boot process? BEFORE start4.elf runs, when the EEPROM is running, it's possible to configure UART output. ...
5
votes
3answers
1k views

Clients connected through OpenVPN unable to process DNS requests through Pi-hole

I am on Rasbian Stretch. I installed OpenVPN (via PiVPN) and Pi-Hole (4.2). I setup my Pi-Hole (that runs on 192.168.1.6 on the LAN) to use Cloudflare DNS over TLS (using the cloudflared service on ...
5
votes
0answers
157 views

Raspberry as I2C Slave, how to slow down transfer rate?

I have had minor success using the PIGPIO library and interfacing the Pi as an I2C Slave (Using GPIO Pins 18 and 19 as SDA and SCL) with a Campbell CR1000X Datalogger I am encountering a problem ...
5
votes
1answer
623 views

Rasberry Pi zero and 3 bluetooth transfer speed is slow RFCOMM

I am trying to send a series of bytes from the Raspberry Pi zero W to the Raspberry pi 3 via bluetooth. Im using the PyBluez python package. I believe that Raspberry Pi Zero has Bluetooth 4.1 and ...

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