Questions tagged [pi-4]

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

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23 views

Can you use a raspberry pi for a 5-6 player Minecraft server?

I am trying to use a new Raspberry Pi 4 (with 4 GBs RAM) as a Minecraft server for 5-6 players. Would it perform well or is it just more worth my time to build a server.
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32 views

Very poor OpenVPN performance on Raspberry Pi 4B

Recently I configured OpenVPN via PiVPN on my Raspberry Pi Model 4B with newest Raspbian Buster (4.19.58-v7l+) to have an access to my home network from anywhere. Since beginning I have a very poor ...
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1answer
35 views

Can I supply power with 5V 2Amp to Raspberry pi 4 [duplicate]

Can I supply power with 5V 2Amp to Raspberry pi 4? Currently 5V 3Amp chargers by Raspberry Pi are out of stock , so I am using phone charger with 5V 2Amp along with Type C adapter.
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1answer
28 views

Pi 4 X-Display resolution doesn't match frame buffer

I just picked up a Pi 4 and imaged a new card with Raspbian Buster. I'm running this headless (using VNC) but noticed the resolution doesn't match what I've set via raspi-config (which updates /boot/...
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1answer
44 views

Raspberry pi 4 gets hot while installing raspbian [on hold]

I just got Raspberry pi 4 and it too hot while installing raspbian OS. > vcgencmd measure_temp temp=78.0'C Is this normal ? I installed NOOBS Lite from Windows 10 and installed in SD card. It's ...
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1answer
43 views

Is Raspberry PI 4 capable of playing two HD videos simultaneously?

RPi 4 can drive two displays with the two HDMI ports. Will it be able to simultaneously decode and play two different HD Quality videos - one on each display?
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24 views

raspberry pi 4 New uart configuration

New raspberry pi 4 has uart on gpio 12 and 13 under ALT4. how could a character device /dev/ttyS5 be created out of it? Thanks
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1answer
94 views

64bit OS on Raspberry Pi 4

Looking for a 64bit version of Linux for the Raspberry Pi 4. I'm aware that support under Ubuntu Mate is in the works, apparently Ubuntu Server works but it limited to using 1GB of ram. Are there ...
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14 views

Raspberry PI 4 can the power be software controlled to the camera?

With the new Raspberry Pi 4. Can the power to the Raspberry Pi 4's camera on the CSI connection be controlled by software?
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37 views

Pi4 Screen Res and Overscan

With my new Pi 4, I am having a ton of difficulty getting the display output correct. I have eventually managed to get the resolution correct with a combination of the boot config and the screen ...
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0answers
14 views

Lakka Retroarch ignores hdmi mode, and cannot correct it via SSH effectively

Disclaimer, I am using HDMI => VGA to a 480p CRT, raspberry pi 4b When I change the config.txt to: #480p hdmi_group=2 hdmi_mode=4 the boot screen looks fine (with the lakka logo) Then when ...
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21 views

NOOBS hangs on rainbow screen, does not boot

I've installed NOOBS using the standard instructions included in the zip file, but every time I insert the SD card, boot hangs on the rainbow screen. What's funny is that if I flash the card with ...
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2answers
50 views

Can't OpenGL render points and lines on RPi4 (specifically)

How to get OpenGL.glDrawElements(GL_POINTS, ..) (or GL_LINE_LOOP, GL_LINE_STRIP, GL_LINES) to work with the latest Raspberry Pi? I maintain the pi3d module and, though it works on windows, linux and ...
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1answer
21 views

I want to use a 3rd party USB-WIFI dongle

My Raspi 4 has a custom metal case, which means the on-board Wifi chip has a hard time getting a reliable signal to my router downstairs. Therefore I want to use an external USB-Wifi adapter and then ...
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2answers
72 views

Resizing partition on an external disk renders it unusable as a root partition?

I'm attempting to configure my raspberry pi 4 to boot from an external disk, and it works pretty well! I've configured it to boot from the partition ID I get from sudo blkid corresponding to my boot ...
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2answers
51 views

Can I power raspberry Pi 4 with variable power supply?

I'm trying to power my new Raspberry Pi 4 via an external power supply, that only has positive and negative leads coming out of it. So I can set that to 5 volts, but then I need to connect it to the ...
2
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1answer
46 views

RPI4 won't boot with powered USB hub

I have an RPI4 running a Plex server, Pihole, etc etc. Power kept dropping while running certain tasks involving the attached HDD, so I started using a powered USB3 hub - problem solved. But now the ...
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0answers
34 views

How to make a splitter cable for the USB2 OTG port on the RPi 4B?

According to the answer to Where is the USB2 OTG port on the RPi 4 Model B located? the Raspberry Pi 4B has a "hidden" OTG port in the USB-C power connector. My first idea to use this port was to ...
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0answers
46 views

How to verify id of installed firmware?

The release notes for example to date 2019-07-10 shows * Linux kernel 4.19.57 * Raspberry Pi firmware cb3a32adf39f45a49be454e30c7464920ad7c605 After an update I can verify the current kernel version ...
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1answer
58 views

Booting Alpine linux on Raspberry Pi 4

has anyone had success running Alpine Linux on the Raspberry Pi 4? I have copied the contents of the Alpine release for rpi 64bit from here to an SD Card formatted with FAT32, but I only get to the ...
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2answers
61 views

ufw and iptables on buster

I've got a RPi4 and I'm trying to configure ufw. The problem is that I get this error ERROR: Couldn't determine iptables version The versions of iptables and ufw are iptables 1.8.2-4 ...
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4answers
473 views

Where is the USB2 OTG port on the RPi 4 Model B located?

According to this answer the Raspberry Pi 4 Model B has a total of five USB ports (two USB3 host, two USB2 host, one USB2 OTG). Where is the fifth USB2 OTG port located and how can I use it? Can I ...
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1answer
41 views

Raspberry Pi does not reboot with powered external HDD attached

I have recently set up a Plex Media Server on a new Raspberry Pi 4 (4 Gb). This is powered using it's own official power supply, the Pi is connected via USB to a powered USB hub which has a 1TB WD ...
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2answers
330 views

How to disable wifi in Raspberry Pi 4

How to disable WiFi in Raspberry Pi4, possibly keeping the chip powered off.
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0answers
62 views

Different resolutions HDMI-1/HDMI-2 in Screen Layout Editor

I have a Raspberry Pi 4 (2GB) connected to 2 displays of resolution 3840x600 each (58:9 aspect ratio), running the latest version of Buster. To have the display in correct resolution, I have edited ...
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35 views

Single webcam using /dev/video0 and /dev/video1

With just one webcam attached, I get two devices: /dev/video0 and /dev/video1 They appear to have identical attributes. It's random which one gets bound to which entry, and only 1 of them actually ...
3
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1answer
109 views

What is the purpose of PD_SENSE in the Raspberry Pi 4 power circuit?

Here the schematics of the USB-C power input of the Pi 4 : You can see that there is a resistor connected to the USB_CC lines of the USC-C socket, the other side is labelled PD_SENSE and is going ...
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1answer
37 views

No video after “Powered by Rasbian” splash screen RPi 4

RPi 4B 1GB Installed Noobs as per instructions onto 32Gb micro SD card. Powered on Pi, Noobs does its stuff and loads the operating system. So far so good. When power reapplied I get the following: 1....
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1answer
57 views

Can you use the Raspberry Pi 4 B to control 1 or more Raspberry Pi Zero's?

My project is going to use Pi 4 to connect to 1 or 2 Pi Zeros. I would want the Pi 4 to control the Pi Zeros. Would that work? Also I am going to connect the Pi 4 to the Ethernet. Also would the Pi 4 ...
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2answers
57 views

Raspberry Pi4 extension to PCIe

Is it possible to extend the Raspberry Pi 4 to provide a PCIe connection? I have a PC which has as only purpose to play music using this Soundcard (no Linux drivers that work well) "PCI Express X-Fi ...
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1answer
49 views

pi-4 cryptsetup benchmark output?

On the pi-4 what is the output of "cryptsetup benchmark"? I want to asses its performance compared to the pi-3. Apparently the new "quality standards" require this question to be needlessly verbose ...
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2answers
173 views

Why doesn't the RPi 4 power on when RUN pin is grounded?

I'm trying to power on a RPi 4 using the RUN pin. The RPi is runing LibreELEC (Leia) 9.2 ALPHA1. I tried shutting down the RPi from LibreELEC's GUI, then grounding the RUN pin for a second by ...
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31 views

Performance of OS install on SD vs USB 3

I was wondering if I should think about installing the OS on a USB 3.0 stick and using the USB 3.0 port rather than the Class 10 Micro SD card to enhance read/write speeds. Is there a performance ...
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1answer
81 views

Can I plug my SD card from Pi 3 into a Pi 4?

If I upgrade the OS to buster on an OS disk (SD card or USB stick) on my pi 3, will it work if I boot a pi 4 off that?
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37 views

What came out of the team up with Google AI for the rpi 4?

I remember back in 2017 I had read several blog articles such as this one where it was mentioned that the rpi foundation had teamed up with Google and that we could expect Google AI for the raspberry ...
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0answers
121 views

Stadia running on Raspberry Pi 4

I'm wondering if Google Stadia would run on a Raspberry Pi 4. It seems to run on Google Chrome that doesn't seem available on Raspbian. However, Chromium is available. So I have two questions: Does ...
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0answers
328 views

Can't set output to 4k 60hz on Pi 4

What I've tried: Setting "4Kp60 HDMI" I did this in the GUI config application and rebooted. Also tried disabling it and then enabling it in the config.txt and rebooted. Installing updates My ...
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2answers
112 views

What Revision(s) does cat /proc/cpuinfo return on the new Pi 4 1/2/4GB?

To enhance my bash script decoding the Revision returned by cat /proc/cpuinfo I'd like to know what the RaspBerry Pi 4 codes for ModelName,Processor and Memory are. (my own one is still underway) ...
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0answers
57 views

What sort of throughput is achievabe over the USB 3.0 port on the Pi-4?

Looking to run a router application on the rPi-4, and was wondering if anyone has experience using usb 3.0 -> gigabit ethernet adapters on it - specifically what adapter/chipset worked with what ...
2
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0answers
67 views

How fast can GPIO pins toggle on the Pi 4?

Benchmarking of the Pi 4 using the Python GPIO Zero library shows a significant increase in the frequency of toggling a GPIO pin on and off compared to previous models. This result is attributed to ...
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0answers
102 views

New Pi Model 4 hangs at most boots

Greatings all Pi eaters! Got the latest Pi "Raspbian Buster full" on a 16 gig SD card but it hangs apx 50% of the time at boot right after log messages disappear. One monitor has a valid HDMI signal ...
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4answers
443 views

Choosing a Pi4 power supply

I'm trying to decide what is the best option for powering a Pi4. The specs mention for a minimum of 3A. Let's consider we would also like to connect a 2.5" drive to the Pi4. Could someone more ...
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0answers
61 views

HDMI power circuit on the Raspberry Pi 4

The previous models of the Raspberry Pi used different circuits to connect its 5 V power rail to the HDMI connector, i.e. How much current can I draw from each model's HDMI socket? Especially the ...
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1answer
201 views

Powering the Pi 4 - safe voltage levels and current requirements

How to safely power the Pi 4, more specifically: What voltage levels are safe to power the Pi 4 via the USB-C connector or via the GPIO header? What are the current requirements? What Power ...
8
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1answer
1k views

Pi 4 I/O interface options… and where to find them

The BCM2711's hardware documentation lists multiple I/O interface options. Among others these are: up to 6 × I2C, up to 6 × UART (muxed with I2C), up to 6 × SPI (only five exposed on Raspberry Pi ...
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1answer
68 views

What is the configuration of the 4-pole A/V jack on the Pi 4?

What is the configuration of the combined analogue audio and composite video 3.5mm jack on a Raspberry Pi 4?
3
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1answer
294 views

Can the Raspberry Pi 4 better distribute Python scripts to all four cores?

This relates to previous questions regarding the GIL (Global Interpreter Lock) for Python on the Raspberry Pi. My question has to do with the new processor on the Pi 4 - does it still have the same ...
2
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1answer
246 views

Can Raspbery Pi 4 hardware decode 4k@60hz H.265 10bit video?

I have seen it has H.265 support, but not specifically for 10 bit. Can anyone confirm this?
2
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1answer
344 views

Is Raspberry Pi 4 fast enough to watch online videos with 1080p?

The Pi 4 has a faster processor (1.5 GHz Quad-Core ARM-Cortex A72). I am wondering if it is now possible to watch HTML5 videos on a browser (for example YouTube) and with 1080p quality without lagging ...
25
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1answer
6k views

Does the Pi 4 resolve the Ethernet+USB bottleneck issue of past versions?

The Pi 3 (and previous models) had an issue of bottlenecked bandwidth when using Ethernet and USB simultaneously. Is this resolved in the Pi 4?