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0 votes

Raspberry PI loses IPv4 address randomly but keeps IPv6 address

This is an issue with DHCPCD & Docker on Raspberry, as you already found by yourself. The full discussion is here: Raspberry Pi 4: DHCPCD route socket overflowed. Basically, dhcpcd can be flooded ...
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0 votes

Strange issue with wifi (works only with hdmi)

I have exactly the same problem ? Have you solved? If yes, can you explain the resolution, please ? Thanks
0 votes

Dpkg fatal error - Rasberry Pi - Re-post Need help please

As I mentioned in the comment, it appears to be an error with apt. Perhaps this issue - posted on GitHub - explains it? In any case, it appears to be fixed now.
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1 vote

Open Port 1433 on Raspberry Pi

I run netstat -ano -p |find “1433” in command prompt but the error is No such file or directory. Yes, because find does not process data via standard input, and what find "1433" means is to ...
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0 votes
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Using the Dynamic Device Tree to add Overlays at Run Time

I asked this question 6 months ago, and as I've gotten no answer I'll assume that the answer is that the dtoverlay command is incapable of accessing overlays that were loaded at boot time; i.e. the ...
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0 votes
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pigpio I2C error

The parameter data expects an array of bytes. i2c_write_device gives the following examples. pi.i2c_write_device(h, b"\x12\x34\xA8") pi.i2c_write_device(h, b"help") pi....
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Why is my IDE not opening on raspberry pi?

You need to search for the error log created by the programs when they fail to start. The errors will indicate the problem. If they don't create an error log there may be a command line option to ...
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1 vote

RPi4 won't power on from 5V if any load is present on 3V3

Generating your own 3.3V is actually the most advisable solution, even if you manage to get your solution to work. It makes the power-on sequence of your product independent of the Pi, thus avoiding ...
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pin state after shutdown

Your Question asks about "pin state after shutdown" - in general pins retain their state if powered. You later state "i turn off the raspberry" - if unpowered the pins obviously ...
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1 vote
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'/dev/v4l-subdev1' node not created anymore for 16 MP Arducam with autofocus (IMX519 based) with Rpi 4B

While going through my dmesg logs again, I noticed it said "consider updating imx driver". So I went ahead and tried that that via ./install_pivariety_pkgs.sh -p ...
2 votes

pin state after shutdown

If you want to ensure the GPIO are low at power-off connect each GPIO to ground via a 4k7 resistor.
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1 vote
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monitoring two serial ports simultaneously

It's probably a mistake to use timeouts. You probably should read character by character and assemble each message rather than expecting each message to be ready immediately the first character is ...
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enable ssh on pi4 FreeBSD

Connect your Pi to the router using a cable. Open /etc/rc.conf and add the following lines: ifconfig_ue0="DHCP" sshd_enable="YES" Save and reboot Check your router for the list of ...
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I2C interface not detected

I run the display on 5V and use pull up to 3V3. It works just fine and no display contrast problems. If you look at the I2C specification it is open drain outputs, no sourcing as it depends on the ...
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1 vote

RPi4 won't power on from 5V if any load is present on 3V3

It's likely that your HAT has some components that can "back power" the 3V3 rail (e.g. an IC that uses both 5V and 3V3, and has a leak current into 3V3 rail when it only gets power from 5V ...
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Eth0 accessible via SSH but no internet connection when raspi hosting an AP

The "tutorial" you linked is old and rather confusing. It also omits a vital step in setting up an Access Point using dhcpcd interface wlan0 … nohook wpa_supplicant This would have ...
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0 votes
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Raspi connected to wifi but cant ping network members or outside servers

So, as @Milliways stated, the dhcpcd.conf content was the problem. It was a relict from a previous session where the raspi was a host opening an access point to a local network. Therefore, the dhcpcd....
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getting initramfs shell in initramfs on cm4

Finally figured it out. I have one console (the default seems to have two consoles -- the serial and across hdmi -- I'm only using the serial). I needed to add this to init in initramfs: exec >/dev/...
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2 votes

Raspberry Power Supply via GPIO. No HDMI or Ethernet

You need to supply more power. Your power supply to the GPIO is clearly inadequate. It could be the wires used or the power supply or poor connections. We can't guess which.
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1 vote

RetroPie on Pi 4B won't display on LG smart tv

I don't have RetroPie but I did have the same screen problem after upgrading a Raspberry Pi 4B to Bullseye 64-bit on an LG42LV3550 screen, which had worked well with the official Buster. By ...
-1 votes

RetroPie on Pi 4B won't display on LG smart tv

I don't have RetroPie but I did have the same screen problem after upgrading a Raspberry Pi 4B to Bullseye 64-bit on an LG42LV3550 screen, which had worked well with the official Buster. By ...
0 votes

why does comera image not pop up?

You may be either using VNC or SSH to connect to the Pi. If that's the case, you won't be able to see the image pop-up, and you now have two options to fix that. Connecting the Pi to a monitor using ...
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Raspberry pi wifi point

Thanks for the answer. It actually already worked when i did this: sudo sysctl -w net.ipv4.ip_forward=1 sudo iptables -t nat -I POSTROUTING -o wlx3460f902843e -j MASQUERADE Is there any way to ...
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How to solve ''"Failed to load image Python extension: {e}"?

It looks like opencv has some problem to open your webcam. From the tutorial on PyTorch's website, they have some configuration on "/boot/config.txt". Have you completed this step? Another ...
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Raspberry pi wifi point

Try: sudo sysctl -w net.ipv4.ip_forward=1 sudo iptables -t nat -I POSTROUTING -o wlan0 -j MASQUERADE sudo iptables -I FORWARD -i wlx3460f902843e -o wlan0 -j ACCEPT suco iptables -I FORWARD -i wlan0 -...
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Do you need port forwarding to use SSH from your Pi anywhere?

Not sure if this is allowed, so admin feel free to delete. In many cases where a public IP is not granted (mobile networks, starlink, etc) port forwarding won't work. Further port forwarding does ...
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Do you need port forwarding to use SSH from your Pi anywhere?

Yes, no. perhaps. To access the Pi's ssh port, it needs to be accessible. From the whole Internet, if you want to access it from anywhere. In general, the Pi is connected to your internal LAN (either ...
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0 votes
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Record audio whilst pressing a button in scipy

This example may help you. There they are catching KeyboardInterrupt to stop the continuous recording. What you may do is: using while not button_pressed(): instead of while True: in the example, ...
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3 votes

Can you control your Pi via SSH while it is off?

No, for a Pi to do anything it requires power.
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0 votes
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Can´t SSH into a Raspberry Pi

Your question is very short on details (wrt what you did to setup your SSH keys), but it sounds like you have somehow opted for SSH key authentication (instead of passwords), but failed to either ...
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1 vote

Why is there a severe Raspberry Pi shortage?

My suggestion is to take one of your older PCs and put Linux ubuntu on it. That can be accomplished in an evening with the bells and whistles included. That will give her most of what the Pi offers ...
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bluetoothd CPU usage constant at 100 %

Switching to 64 bit bullseye seemed to work for a few weeks, but now the problem is back. Since Bluetooth devices still work and the issue seems to appear more seldom I'll have to attribute it to a ...
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8 votes

Why is there a severe Raspberry Pi shortage?

Unfortunately, there are no near-term solutions for today's shortages. Your best bets may be to get on a vendor's "waiting list", or spend hours monitoring sources like the one mentioned by @...
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1 vote

raspberry pi - vnc viewer wrong resolution

I had a similar issue with my raspberry and VNC Viewer. I managed to solve it by setting up the headless resolution to the resolution of my screen (the one I use to connect remotely, which is ...
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