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8 votes
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How to stream sound to a bluetooth device from a raspberry pi zero

I did manage to play sound and record using my Marshall MID headphones using a Raspberry Pi Zero W, which has a builtin WiFi + Bluetooth adapter, but no audio jack. Please note that there are ...
Besi's user avatar
  • 884
6 votes
Accepted

What are the pros and cons of the new Raspberry Pi OS Bullseye?

This version seems to have been designed for users who use the GUI Desktop on a Pi4/Pi400 with little consideration for those running older models, headless or at CLI (and even less testing of these ...
Milliways's user avatar
  • 60.3k
5 votes
Accepted

Will RaspiOS Lite (no Desktop environment) be able to start a software with GUI made with Tkinter?

I assume Tkinter requires a “window manager” from an OS that has a desktop environment. To clarify a few terms that have a specific technical meaning in GNU/Linux based operating systems: Window(ing)...
goldilocks's user avatar
  • 59.1k
4 votes
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Upgrading libc (libc6) raspberry pi os (rasbian buster)

The Pi can still boot because the kernel does not use userspace libraries, so it's unaffected. However, almost every userspace Linux program uses glibc, so when you replace that library, you will ...
Dmitry Grigoryev's user avatar
4 votes

Run script when Pi connects to any network

Dhcpdcd, which is used for DHCP client negotiation by default in Raspbian/RpiOS, has a "hooks" directory in /lib/dhcpcd/dhcpcd-hooks. Beware not to confuse dhcpcd with dhclient, which can ...
goldilocks's user avatar
  • 59.1k
4 votes

Can't connect to Pi on local network via raspberrypi.local from Windows

One possibility, which I just ran into myself: avahi may have swapped to a different (incorrect) network interface. I was similarly seeing ping: cannot resolve raspberrypi.local: Unknown host from a ...
dimo414's user avatar
  • 752
3 votes
Accepted

RPI 0w: automatic timezone syncronization

I used solution from here with my small changes: zone=$(wget -O - -q http://geoip.ubuntu.com/lookup | sed -n -e 's/.*<TimeZone>\(.*\)<\/TimeZone>.*/\1/ p') if [ "$zone" != "...
Rougher's user avatar
  • 99
3 votes

RPI 0w: automatic timezone syncronization

From Terminal call setuo by command: sudo raspi-config Select Internationalization Option to set Time Zone Time and date are automatically set from network if you connected to the internet. If you are ...
user16181's user avatar
3 votes

Bluetooth connection between Android smartphone and Raspberry Pi fails

The problem is that there is no Audio Sink defined. Check with rpi ~$ bluetoothctl show Controller DC:A6:32:7F:38:48 (public) Name: raspberrypi Alias: raspberrypi Class: ...
Ingo's user avatar
  • 42.2k
3 votes

Raspberry Pi 3 high IO

Since you know the PID of the offending process (4076), you should find out what started it. Run ps -aef --forest (as root, because it's a root process) and search for the PID in the process tree. The ...
Dmitry Grigoryev's user avatar
3 votes

Does terminating ssh connection, terminates the installation process too?

Any program started in the foreground within the ssh session will terminate when closing the ssh session. You have to ensure to send the program to the background before closing the session. have a ...
Ingo's user avatar
  • 42.2k
3 votes
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Raspberry pi 3 B+ wlan0 not found

You can try what you want, as long as you don't see the WiFi interface wlan0 on an unmodified Raspberry Pi installation, nothing will work. It could be that your WiFi is simply broken. To verify this ...
Ingo's user avatar
  • 42.2k
3 votes

Is it possible to Cross Grade raspbian to make it 64-bit?

Your error comes from the fact that you're targeting the wrong repositories. Raspbian has separate repositories for 32-bit (http://raspbian.raspberrypi.org/raspbian) and 64-bit (http://archive....
Dmitry Grigoryev's user avatar
3 votes

Is it possible to Cross Grade raspbian to make it 64-bit?

It is possible but tricky. The way I did it is: boot with the 64-bit kernel, update the repositories, copy the apt metadata from the raspios image, reinstall all the packages with apt, delete the 32-...
auxsvr's user avatar
  • 131
2 votes

The usb-storage driver seems to be constantly accessing external USB drive on a Pi B+

If there's a userspace process that keeps the drive busy, running lsof /mnt/FileArchive while the partition is mounted should list it. If the activity is internal to the mass storage driver, it could ...
Dmitry Grigoryev's user avatar
2 votes

Raspberry Pi 4 as server with connection to two networks

The following answer is assuming you could connect your Raspberry Pi to your router via Ethernet. You can start a hotspot in your Raspberry Pi and connect your ESP32 via the hotspot. As per my ...
Irfanuddin's user avatar
2 votes

Raspberry Pi 3 high IO

The questioner updated his question with the solution. It seems he doesn't like to create a correct answer as suggested in a comment. Here is it: After spending a lot of time I finally found the root ...
Ingo's user avatar
  • 42.2k
2 votes

why doesn't the [dtoverlay=dht22,gpiopin=xx] way not work, when Python on pin 21 does?

It probably has something to do with the face that DHT22 DOES NOT use the 1-Wire protocol, but a proprietary non-standard protocol - which is similar, but not the same and very critical on timing. (It ...
Milliways's user avatar
  • 60.3k
2 votes
Accepted

Raspberry Pi wifi scan working, but cannot connect to wifi

You answer your question and asked for details: "Can anyone explain this?". As shown with ip addr the wlan0 interface is down. So you have to look why it doesn't comes UP on bootup. Using /...
Ingo's user avatar
  • 42.2k
2 votes

How to remove the bootloader startup screen on RPi 4 Buster?

I was able to solve this much more easily by calling: sudo -E rpi-eeprom-config --edit Adding: DISABLE_HDMI=1 and Save For me that works fine.
Thomas Krcal's user avatar
2 votes

How to configure a non-regular display (1920x480 CET) for Pi3 and Pi4 running Raspbian buster?

I have an 8.8" LCD with 480x1920 as well. I have looked at this post as well as another one that is similar. I have the same issue as you had with it no being full screen. I added your buffer ...
Brodieman's user avatar
2 votes

How to configure a non-regular display (1920x480 CET) for Pi3 and Pi4 running Raspbian buster?

I have managed to get this partially working with an ultrawide screen (also 480x1920) so I think this may be the same one you are using. For reference I am using a PI3B. I put the following lines in ...
Paul Worman's user avatar
2 votes

problem with wlan0 on a rpi4 with raspbian + kodi

With another setup I have found that the image versions of the Raspberry Pi OS come with an unstable firmware for the built-in WiFi device. I don't know if it is the same issue than with your problem ...
Ingo's user avatar
  • 42.2k
2 votes
Accepted

Dual Access Point Connection Issue

As noted in a comment you are also agreed with using systemd-networkd. Here in short a configuration I have just tested, based on Setting up a Raspberry Pi as an access point - the easy way. Switch ...
Ingo's user avatar
  • 42.2k
2 votes

Boot Raspberry Pi to GUI Qt app using OpenBox doesn't work

Unless you have a compelling reason not to use the default graphical environment, I would rather configure your Pi to autologin to desktop via raspi-config, and then edit the /etc/xdg/lxsession/LXDE-...
Dmitry Grigoryev's user avatar
2 votes

Boot Raspberry Pi to GUI Qt app using OpenBox doesn't work

Raspberry Pi OS Desktop based on Buster runs the LXDE Desktop environment by default. Its main component is the Openbox Window Manager. So if you run a fresh flashed RaspiOS image with Desktop you ...
Ingo's user avatar
  • 42.2k
2 votes

RPI 0w: automatic timezone syncronization

The timezone is the area in which the device is located. The problem is that something must know what timezone your client is in. If you don't know it, how should the client know it? It could connect ...
Ingo's user avatar
  • 42.2k
2 votes

Setting up a raspberry pi as a gateway firewall for security purposes?

On the Raspberry Pi OS you have its firewall nftables available. It is the successor of iptables and replaces the old popular iptables, ip6tables, arptables and ebtables. So I suggest to use nftables ...
Ingo's user avatar
  • 42.2k

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