Raspberry Pi Forums

knute

I managed to get my other one working by installing new 5/27 RPiOS, rebooting, running the rpi-update rollback command, and rebooting again. Not sure why I couldn't get it to work before.

knute

I've got two brands of those little screens that don't work with the 5.4 kernel. One is a Waveshare and the other is an goodtft/LCDwiki(?). The only fix I found was to go back to the 4.19 kernel. I managed to do that with rpi-update on one but the other I had to burn a new card with the 05/27 Raspbi...

knute

I've got wine on my Xubuntu box and Notepad++. Seems to work fine. I think it would work on a Pi too. Well... Aside from the fact that Notepad++ is written to run on an x86 hardware architecture and Pis use ARM architecture... Yes you need an emulator too. https://www.youtube.com/watch?v=cb-Ruos-O2...

knute

Are you running the 5.4 kernel and the vc4-kms-v3d overlay?

knute

I've got wine on my Xubuntu box and Notepad++. Seems to work fine. I think it would work on a Pi too.

knute

Do you have the 5.4 kernel and the vc4-kms-v3d overlay?

knute

If you are used to C# I would just use Java. But then I would use Java anyway

.

knute

I found a problem with the vc4-kms-v3d overlay and the new kernel was stopping my audio. You might check to see if that is enabled in your /boot/config.txt file. The fkms version works and no overlay works.

knute

So I had two problems with the new kernel on my 3B+. First I was getting screen freezes. I would look away from the Pi for a bit and the screen would be black. No response to mouse and I couldn't SSH in from another computer. I'm not sure this is resolved but it may be related to the next problem. A...

knute

I'm seeing the same problem, no audio after kernel 5.4. I installed 5.4 through apt.

knute

I wrote one in Java that you could modify: http://pi.knutejohnson.com

knute

bell-sw.com

knute

The new kernel has killed my little 3.5 inch displays. Apparently their drivers aren't compatible with 5.4. I reverted the kernel with rpi-update and that solves the display issues for now. I emailed the maker and if I hear back on a solution I'll post it here.

knute

I think the simplest way would be to have your Pi send the data to the web server by whatever means you normally use to upload content. I wrote some software for a Pi that gets a photograph and data from a mountain top radio repeater site, creates a composite image with the photo and the sensor data...

knute

On occasion I get the following during shutdown or reboot:

A stop job is running for Daemon required to control GPIO pins via pigpio (... / 1min 30s)

Raspberry Pi 3B+
Latest up to date Raspi OS
pigpiod enabled at startup

knute

I think it has to be a timezone problem. What timezone are you in? What are the contents of /etc/timezone? What is the output of the date command?

pi@raspberrypi3B-1:~ $ cat /etc/timezone
America/Chicago

pi@raspberrypi3B-1:~ $ date
Wed 08 Jul 2020 01:56:40 PM CDT

knute

I checked my installation of vsftpd running on a Pi3+. I tried sending a file to it from my Xubuntu desktop and the times are correct. You might check to make sure that there aren't timezone issues with either your client or server computer. Changing the use_localtime option to NO might help you to ...

knute

I like Azul's JDK because you can get it with JavaFX but I don't think it is any faster than OpenJDK. You can also look at Bell Software's JDK, bell-sw.com, it also has a version with JavaFX built in. The advantage of Bell's is that they have version 14 available with JavaFX for ARM.

knute

If it is the same package you have in your first post: sudo mv jdk-8u251-linux-arm32-vfp-hflt.tar.gz /opt cd /opt sudo tar xvf jdk-8u251-linux-arm32-vfp-hflt.tar.gz I think it will create a directory something like jdk-8_251. All of the programs are in jdk-8_251/bin. Create some links in your /home/...

knute

Actually you've linked to Open Java which i'm trying to avoid as it hangs the boot for an hour apparently. This is why i've been at pains to get hold of the Oracle package. Since the license arrangements changed you can only get hold of it through a registered Oracle account which i've done so .. h...

knute

I looked at that webpage and it says you need at least version 7. Since 11 is the current long term support version, I would install that.

sudo apt update

sudo apt install openjdk-11-jdk

knute

sudo apt ufw install

sudo ufw allow <your services eg. ssh>

sudo ufw enable

I can't imagine why you would want to block outgoing ports, it is only going to give you grief. Tell me what harm you think you would be preventing?

knute

You don't need the deny in rules. If you have a router you can connect from the outside to your network with a VPN. From there you can ssh into your Pi and restrict it to local addresses. You need to decide if you need to get to your webserver from the wild or if you can VPN to your network first. A...

knute

Not really. The default for UFW is to block inbound so you don't need any deny in rules, just allow rules. Just allow the ports for services that are running on your Pi. If you can restrict where they are coming from you should do that too. Do you have a router between your Pi and the internet or do...

knute

The simple solution to this is don't block all outgoing, it's just going to make your life difficult and not make your computer any more secure. View your camera through an SSH tunnel.

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