Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Questions tagged [pi-4]

For questions that apply specifically to the Raspberry Pi 4 and not other/all models.

2103 questions
7
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1 answer

Distinguishing RPi4 models with USB-C issue and without

The first model of the RPi4 seems to have an issue with USB-C, as reported by ArsTechnica in July 2019. The effect is that E-marked cables do not work well. The Raspberry Foundation has confirmed this issue and wanted to provide a fixed variant in…
Thomas Weller
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5
votes
4 answers

At what max temperature is a cooling fan recommended?

I have a RPi4 now, have cooling sinks mounted on the processors and it runs pretty smooth, but sometimes I worry about the temperature development of my processor. At what level should I worry, and consider a fan?
Wolk9
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4
votes
1 answer

Distrubute program execution on 3 cores, RPi 4, RPi OS

I have a Raspberry Pi 4, running the latest Raspberry Pi OS version. I have a C++ program running on the Raspberry Pi and i want to distribute the execution of this program on cores 1+2+3, while Raspberry Pi OS runs on core 0. Down below is a…
jrn6270
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4
votes
1 answer

Display_rotate=3 only filling half screen Raspberry Pi 4

I have an issue such that when I rotate my screen to portrait with Display_rotate=3, the raspberry pi only fills the bottom half of the screen.
Talving
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3
votes
3 answers

Freenove 4WD car with Raspberry 4 won’t boot up from batteries but will when plugged in

We have been building the 4WD Freenove car with a Raspberry Pi 4. We purchased two Samsung 18650 batteries. When we try boot up from battery power the red LED turns on the Pi. However the green ACT LED doesn’t or barely lights up and we get no…
Saul
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3
votes
1 answer

How can I enable the fan on the official POE HAT under fedora?

I have a raspberry PI 4 (8GB) with the raspberry POE HAT installed. When I run the RPI with raspian OS the fan will cycle on and off as needed. Under fedora the fan does not come on. There is a similar question posted at PoE hat fan activation on…
Brad Smith
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3
votes
1 answer

How to hibernate raspberry pi4? suspend-to-disk, aka power off state

I apologize for the lack of knowledge. I am attempting to Hibernate / leave all open applications open, unplug power take the PI somewhere else and reboot starting up right where I left off. This way if I am working on multiple documents I can…
yourmother
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2
votes
1 answer

Installing missing php extensions - NEMS/ Cacti

I'm installing Cacti Server v1.2.23 on my NEMS 1.5.2 for Raspberry Pi (Raspberry Pi 4) I'm just learning about Raspberry Pi's and NEMS and I'm just in the process of installing Cacti. On the Cacti Pre-installation Checks page, I have an issue with…
Yeah Nah
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2
votes
2 answers

Why is there a severe Raspberry Pi shortage?

I liked Raspberry Pi because they are affordable and cheap computers for low income kids to have. I have one and its been a godsend. I went to buy one for my niece and they are sold out everywhere!!! Can someone point in a direction to where I can…
SugarFoot
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2
votes
2 answers

Incorrectly configured black border pi-4

When you install and configure the raspberry pi desktop for the pi-4 you can select a box if you have black border on your screen. I selected this box but when I restarted the edges of the toolbar and edges of the desktop are outside the visible…
Seth
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2
votes
2 answers

Raspberry Pi 4 Dual Monitor Mirroring

I have two of the exact same monitor on my Rpi4 up and running plugged into hdmi0 and hdmi1. It is extending the desktop, but I am looking for a way for them to mirror. I have tried searching all over, but either I get how to set it up the way I…
MichRX7
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2
votes
1 answer

What does one of the icons mean on the manual included with a Pi?

What does this icon mean? (2 row, 2 column):
Peter
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2
votes
1 answer

Upgrade from Raspberry Pi3 to Pi4 caused loss of USB drive partition

I could see both partitions in Pi3, but now one has disappeared in Pi4 (using identical install steps). Raspberry Pi 3 UUID NAME FSTYPE SIZE MOUNTPOINT LABEL MODEL 5A08901A088FF375 ├─sda2 ntfs 1.8T /home/pi/g…
RKO
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2
votes
2 answers

Raspberry pi 4 rebooted without notice

I have a raspberry pi 4 that runs a samba server (+ 2TB HDD) and it suddenly rebooted. I use a pretty big heatsink to keep the pi cool and I use the official raspberry pi power supply.
Florin Baciu
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2
votes
1 answer

Raspberry Pi screen blanking when playing multimedia

My Raspberry Pi is a Pi 4 Model B. The screen blanks out whenever I am doing the following: Running Zoom Clicking to play a YouTube video Running Google Meet Playing a music from SoundCloud Basically it seems like the screen will blank itself out…
Jackson Ng
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