Unanswered Questions
811 questions with no upvoted or accepted answers
5
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answers
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Raspberry Pi 4 - Dual Audio with Dual HDMI
I have a Raspberry Pi 4. The thing is, I want to play 2 videos at the same time, since the RPi-4 has 2 HDMI outputs. BUT I also want to have split audio. The audio from video 1 should go out over the ...
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4
votes
1
answer
434
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Does the Raspberry Pi 4's processor support ARM's SHA256 instructions?
According to Wikipedia, every Armv8 processor should support sha256 hashing instructions however /proc/cpuinfo doesn't list it. Could there be a failure to identify the feature by the kernel?
...
CommunityBot
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3
votes
1
answer
205
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Raspberry Pi 4B won't boot, is it dead?
I'm new to the Raspberry Pi world. I was in a charity shop today and I've seen a deal I couldn't resist so grabbed the Pi for 10 euro knowing full well that it could be faulty. Anyway once I got back ...
CommunityBot
- 1
3
votes
2
answers
601
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Raspberry PI 4 B 8Gb running 2 ov9281 cameras with camarray hat: ERROR: *** no cameras available ***
I have a Raspberry PI 4 B 8Gb.
I have this kit (2 ov9281 cameras with camarray hat): https://www.uctronics.com/arducam-1mp-2-stereoscopic-camera-bundle-kit-for-raspberry-pi-nvidia-jetson-nano-xavier-...
CommunityBot
- 1
3
votes
0
answers
230
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External hard drives keep getting unmounted
I have an OpenMediaVault NAS on top of the Raspberry Pi OS Lite set up on my Raspberry Pi 4B.
I have two 1 TB Toshiba HDTB410XK3AA hard drives connected to the Pi through a powered USB hub.
Now I am ...
- 131
3
votes
0
answers
793
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Creating an OS for the raspberry pi in rust, booting from it
I was following this tutorial on how to make your own basic OS for an x86_64 system in rust, but wanted to do it for an ARM64 target, specifically, the raspberry pi 4. I am at the point where I have ...
3
votes
0
answers
1k
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Mimic omxplayer behavior with VLC
I'm trying to mimic the behavior of omxplayer file.mp4 --loop using VLC since omxplayer is going to be deprecated soon.
The use case is a splash screen on an environment without X.
The closest ...
- 131
3
votes
0
answers
1k
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How to netboot Ubuntu 20.04.1 Pi4 to Pi4 with dnsmasq…?
I've been trying to netboot my Pi4's using a Pi4 with dnsmasq on Ubuntu. So the idea is to have one Pi with attached storage serving the others.
My setup is:
master PI with an USB SSD running Ubuntu ...
3
votes
0
answers
420
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help getting ble-mesh (bluetooth mesh) working
I was hoping to get some help. I have been working on getting bluetooth mesh working on my raspberry pi 4 for a few days and feel I am hitting a brick wall.
I am referring to this pdf that was ...
- 31
3
votes
0
answers
3k
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Android Studio on RPi4
So with the release of the 4GB version of Raspberry Pi 4 I started wondering whether installing and running Android Studio on it will be possible. Previous Pi versions were lacking in terms of RAM ...
- 31
3
votes
0
answers
418
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Turning on/off specific HDMI port on Pi 4
According to the docs, vcgencmd now can specify which hdmi port as a second argument for raspberry pi 4, so I did sudo apt update then sudo apt upgrade
but vcgencmd display_power 0 7 returns error=2 ...
- 181
3
votes
1
answer
508
views
RPi 4 second HDMI port does not seem to support CEC
When using the cec-utils on a Pi-4 with 2 HDMI devices connected, the one connected to HDMI1 does not respond to commands or show up in a scan.
Running cec-client -l only shows 1 device. Is there ...
CommunityBot
- 1
3
votes
0
answers
1k
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Raspberry Pi 4: Console on first HDMI screen, X11 on second HDMI screen
The new Pi 4 has two HDMI Ports. After booting Raspbian, the first screen (HDMI-0) should display the console and the second screen (HDMI-1) should display the X11 desktop.
My first thought was ...
3
votes
0
answers
2k
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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 ...
- 2,796
2
votes
0
answers
42
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Ep in and out files not being created when trying to emulate a USB device using libcomposite on Raspberry Pi 4
I'm using the following to set up and emulate a usb device:
modprobe libcomposite
cd /sys/kernel/config/usb_gadget/
mkdir -p g1
cd g1
echo 0x1430 > idVendor # Linux Foundation
echo 0x0150 > ...
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