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Questions tagged [pi-400]

For questions that apply specifically to the Raspberry Pi 3 and not other/all models.

17 questions
3
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1 answer

Pi 400 key cap replacements

I ordered 6 raspberry pi400s for my class of elementary school students a couple of months ago. Already some of the key caps have broken off and I’m sure this is going to continue. I’m looking for the manufacturer of the key caps so I can just buy a…
OsakaStarbux
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1 answer

DS18B20 not showing up Pi 400

I have a raspberry pi 400 running ubuntu server. I have a DS18B20 with a 4.7k resistor connected from the power to the data wire. I boot up the pi and run the sudo modprobe w1-gpio and sudo modprobe w1-therm commands. I then go to the…
TomB
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vote
1 answer

Raspberry pi 400 HDMI audio problem with Bullseye

I see there is another question about HDMI audio on here but I have a permutation of it so I ask my question as well. I've tried everything to get HDMI audio on my pi400 working properly. I think it's a pulseaudio / ALSA issue, but I'm on Bullseye…
mrDBUG
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1 answer

Pi 400 not working with Pi-Supply PoE Switch Hat

The "official" PoE/PoE+ hats will not work with the Pi 400 for a couple of reasons: The main reason being that there is no access to any of PoE pins on the Pi 400 PCB, as there are on the Pi 4 board (just behind the Ethernet port) - indeed, ignoring…
Greenonline
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Scrolling the Raspberry Pi 400 console

In console mode (without any GUI running), the usual key combination for scrolling is Shift+Page Up/Down. However, on the Raspberry Pi 400, this combination, which should map to Shift+Fn+Up/Down, doesn't work. Is this key combination somehow…
finitud
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1 answer

Raspberry Pi 400 Boot Failure: "failed to open device 'SDCARD'"

Encountered Error: The Raspberry Pi 400 displays the following error message upon boot: failed to open device 'SDCARD' cmd 371a010 status 1fff00001 Background: I used the official Raspberry Pi Imager to flash a 64-bit Ubuntu Server image onto a…
DEBAGNIK KAR
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Raspberry pi 400: no sound through HDMI

I've got a karaoke system with an hdmi input and an hdmi output. It works perfectly when connecting the input to a video player or a computer, but when connected to my pi, the image go through HDMI, but the sound not. My raspebbery is a pi 400, the…
FredericP
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1 answer

OpenCL on rPi 400

I have an rPi 400 running Raspbian (Debian GNU/Linux 11.) If I run clinfo on it, I see 0 platforms. I have no /etc/vendor/ directory either. How do I run OpenCL on my rPi400?
Bram
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raspberry pi wont show the desktop

my raspberry pi 400 does not show the desktop even after reflashing the sd card. the ttys work fine. when i reflash the sd card the setup page will shw and i will be able to set it up and reboot. when i reboot it works as expected. then when i turn…
user21682437
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1 answer

Peer-to-peer networking with ethernet

I had an idea for transferring data between Pi's. It involves directly connecting two Pi's to each other only using a single cat5 ethernet cable, and transferring data in a peer to peer manner. I have a Model 3B+ and a Model 400, both running…
Kami-kun
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Can I install os on Pi 400 without sd card reader?

I've been having problems installing an OS onto my Raspberry Pi 400 as I don't have an SD card reader, I've seen previous posts along these lines but none of them specify if I can do this with a Raspberry Pi 400.
Tobotron
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Recommended software problems

I've just started exploring the Raspberry Pi 400 and I'm getting an error updating package data when I click Recommended software under preferences... E:Repository 'http://rasbian.raspberrypi.org/rasbian buster InRealease' changed its 'Suite' value…
astroroots
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Bluetooth is not connecting

I'm having trouble connecting my Raspberry Pi 400 to my Bluetooth speaker: GDBus.Error:org.bluez.Error.AlreadyExists: Already Exists Any idea on how to resolve this? The same message pops up for my Bluetooth headphones. I can pair just fine to my…
astroroots
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1 answer

Make sure that RPi 400 clock is always synced

tl;dr Exactly what steps must a newbie like me undertake to configure RPi 400 in the way that it obtains current time from some official NTP server every time it boots up? I am just trying my first steps with RPi 400, but I hit the wall with not…
trejder
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1 answer

Can the Raspberry Pi 400 run on a 12 volt battery?

I have powered my Pi 3s and 4s successfully via 12 volts with various battery packs. I'm trying to do the same with the PI400. Has anyone successfully powered the Pi400 via 12v and if so, how?
mgc1
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