Ingo
  • Member for 3 years, 11 months
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Unable to change config.txt or cmdline.txt permanently
4 votes

A SD Card has a limited lifetime with writing cycles to it. When this limit is reached it goes into read only mode to be able to backup the data before the card completely fails. So I strongly ...

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Can't resolve hostname in sub-network
4 votes

You are asking for a general tutorial in name resolution which has nothing to do with Raspberry Pi. It is a general networking issue and I can only give an overview where you can look for more details....

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how to transfer file between two RPI over Wi-fi?
4 votes

To answer your last point This is a good "scenario" ? and with the announcement I am a a beginner and I wanted to start with a simple project : connecting 2 RPI together and send data( ...

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Make ifplugd available with systemd
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4 votes

ifplugd is running as daemon so we have to use a systemd service to manage it. I will only use the daemon program /usr/sbin/ifplugd without the management scripts from Debian. Tested with Raspberry Pi ...

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Can I make my raspberry pi zero W distinguish between 2.4 and 5Ghz SSID’s
4 votes

That's curious. The Raspberry Pi Zero W is only working with the 2.4 GHz band. It is not able to detect and use the 5 GHz band because it's WiFi device simply does not support 5 GHz. I'm afraid to ...

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Roboust Network connectivity
4 votes

With the built-in wifi-device of a Raspberry Pi it is possible to create an access point together with an uplink client connection. This can be done with creating a virtual interface ap0 (or what name ...

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What exact wireless chip does Pi 4 use?
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4 votes

You asked for the output of sudo journalctl -b | grep brcmfmac. Here is it: Oct 25 14:42:57 raspberrypi kernel: brcmfmac: F1 signature read @0x18000000=0x15264345 Oct 25 14:42:57 raspberrypi kernel: ...

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Wireless communication between a RPI and a Android app - without internet
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4 votes

You can setup an access point on the RasPi so the smartphone can connect to it. There are hundreds of tutorials about this on the web, but many of them are outdated. The official Raspberry Pi web site ...

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Connect WiFi and Ethernet simultaneously
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4 votes

The setup should not be a big problem because there are no routing requirements. The wired subnet is isolated from the wireless subnet. So you can just connect wireless to the internet router with ...

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Downloading large pdf fails
4 votes

Any suggestions as to how I can get the download to succeed? Maybe there is a problem with Chromium or with the GUI? You can try to use the command line (always a good idea on Unix if things making ...

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Does Raspbian keep a security log file, and what is its location?
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4 votes

The Raspberry Pi OS uses systemd, so you will find logs in its journal. It also contains the logging from the OpenVPN server. Look at it to the current boot with: rpi ~$ journalctl --boot=0 --pager-...

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IP address missing from router DCHP table
4 votes

To answer your question: Any idea why it might not be showing up? A static ip address is a static ip address is a static ip address. It is not manged by any DHCP server, so you will not find a ...

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How to pre-configure raspbian for ssh key-only access?
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4 votes

Raspbian is installed on two partitions: a fat32 boot partition for kernel and firmware and an ext4 partition for the root filesystem. To disable password authentication and only use public/private ...

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Raspberry Pi 4 doesn't show a wireless interface - what drivers are required?
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4 votes

On a Raspberry Pi 4 only Raspbian Buster is running out of the box. On a Buster installation you will find the firmware with: rpi ~$ apt list *raspberrypi* Listing... Done libraspberrypi-bin/testing,...

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Dual boot RetroPie and Windows XP on Raspberry Pi 3B
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4 votes

You are able to execute different installations on the SD Card using programs like NOOBS or better PINN instead, berryboot, U-boot etc. to start them. But the installations must be compiled for the ...

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USB external antenna not working
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4 votes

What you have purchased isn't only an antenna to replace the built-in antenna (I don't believe that's possible), it is a complete new WiFi transmitter/receiver that can be used in addition to the ...

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How to convert a Layer 3 VPN to a Layer 2 VPN?
4 votes

First some general information to get an idea what to do. As you already have found there are in general two ways to configure a Virtual Private Network: a bridged setup on OSI Layer 2 and a routed ...

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Determining kernel release of kernel .img on disk
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4 votes

if you are running a Raspbian Buster image it is easy to find the version in the image of the new 64 bit /boot/kernel8.img. You can just use: rpi ~$ strings /boot/kernel8.img | grep 'Linux version' ...

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hostapd AP over both wlan0 and eth1
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4 votes

If you are open to use another modern all-in-one networking environment without needing additional helpers like hostapd, dnsmasq or bridge utils you can use systemd-networkd. It makes life easier. It ...

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Configuring Raspberry pi as Router, Wifi and Ethernet Bridge
4 votes

I will show a solution in two steps using systemd-networkd. First I create an access point (wlan0) and bridge it with the wired connection (eth0). Then I configure routing between the bridge (br0) and ...

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Configure my Raspberry Pi 4 B to become a Tor-powered Hotspot
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4 votes

What you need is to configure a Tor proxy that will act like an internet router but connect to the Tor network instead. You can use the tor.service with the big advantage that it does not need a ...

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Serial output in case of no OS
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4 votes

is there a possibility to read information trough the serial device even if there is no boot device? Yes! It is possible since Raspberry Pi 4B. The RPi 4B comes with an EEPROM containing the boot ...

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Adding Debian Security Repository GPG key
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4 votes

Get the missing public keys from the Ubuntu keyserver and try if it helps: rpi ~$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys AA8E81B4331F7F50 112695A0E562B32A Executing: /tmp/apt-...

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After Noobs Raspbian installation Pi won't start
4 votes

You want to use Raspbian, not NOOBS. As you see NOOBS is very error prone so most of us use the Raspbian image direct. You can get it from Raspbian Download. Please don't follow the link for NOOBS ...

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Is it possible to set a static IP for the first boot of headless Pi ethernet gadget?
4 votes

If you can mount the root partition of your SD Card with the ext4 file system on a PC you simply can set a static ip address in /etc/dhcpcd.conf. There are some examples in it. You may consider to ...

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Pi Zero W configuration to run AP + Client Mode on Raspbian Buster lite
Accepted answer
4 votes

There are many quirks with creating the virtual interface ap0. You have to follow exactly a sequence, otherwise it won't work. If other applications bind to the wifi port it cannot be set. create a ...

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start chromium on raspberry pi in kiosk mode using systemd service instead of through LXDE-pi/autostart
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4 votes

The Unit file looks very good for a program to start as service. systemd runs services automatically in the background. But your script is sending unclutter and chromium-browser to the background ...

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Running a Python Telegram bot at startup and 24/7
4 votes

Using sudo in /etc/rc.local is not needed. You should avoid it. But in general you should not use rc.local anymore. rc.local is only emulated by systemd and known to have problems. Use a systemd unit ...

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Change to Testing Suite
Accepted answer
4 votes

Usually you have an image of the Raspbian version that you can download from https://www.raspberrypi.org/downloads/raspbian/ or from https://downloads.raspberrypi.org/. But as far as I know there is ...

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How do I install the libssl1.0.0 package?
4 votes

Your installation says Package libssl1.0.0 is not available ... So just look what's available with rpi ~$ apt list libssl* Listing... Done libssl-dev/oldstable 1.1.0k-1~deb9u1 armhf libssl-doc/...

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