Questions tagged [pi-400]

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

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How to prevent fstab errors from bricking Raspberry pi 400?

I'm trying to set something up on a Raspberry PI 400 with an external USB drive, and every time I make the slightest mistake in fstab I have to start again from scratch. It just boots to emergency ...
Nestor's user avatar
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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, ...
FredericP's user avatar
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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 ...
trejder's user avatar
  • 141
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trying to run the pi400 on battery/12v

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? thx
mgc1's user avatar
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Missing vulkan extension: VK_KHR_storage_buffer_storage_class

According to Igalia the v3dv driver should have the extension. But vulkaninfo on an rpi-400 only reports back with these extensions: Device Extensions: count = 5 ---------------------------- ...
Bram's user avatar
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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's user avatar
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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 ...
user21682437's user avatar
-2 votes
1 answer
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What damage can a Y-Cable plugged to the the USB-A 3.0 port do to the PI400? [duplicate]

I'm using a USB Y-Cable with my Pi400 to power and use an old WD 2TB MyPassport Usb3.0 HDD. I'm using a separate 5v-1a PSU so the HDD doesn't have brown-outs. So far I've been using using the cable ...
luckyluca's user avatar
1 vote
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Y Cable to power Usb3 HDD on Pi400

I'd like to use an external usb3 2Tb WD MyPassport 5200rpm HDD with my Raspberry Pi400 for a large Retropie project. I think having it running powered from the Pi400 alone is not giving enough power ...
luckyluca's user avatar
-2 votes
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Why does Raspberry Pi 400 use white color (and not black) for its USB 2.0 port?

On a quick look up, it seems the general trend is white for USB 1.0 and black for USB 2.0. I also glanced through the USB 2.0 specification to try find anything relevant but it seems a bit ...
ritiek's user avatar
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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 ...
TomB's user avatar
  • 34
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1 answer
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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 ...
mrDBUG's user avatar
  • 11
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1 answer
140 views

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 ...
Kami-kun's user avatar
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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 ...
Tobotron's user avatar
3 votes
1 answer
383 views

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 ...
OsakaStarbux's user avatar
-1 votes
1 answer
382 views

Sense HAT stuck on Rainbow test, will not show any blue light in normal RGB

I am new to this, and my Sense HAT is stuck on a rainbow setting and only shows Red and green, instead of Red, Green, and Blue. I have a Raspberry Pi 400, an Acer monitor, and I am using a 40 pin ...
Sophi's user avatar
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1 vote
1 answer
223 views

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 ...
Greenonline's user avatar
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430 views

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/...
astroroots's user avatar
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204 views

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 ...
astroroots's user avatar
1 vote
0 answers
133 views

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, ...
finitud's user avatar
  • 121