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by knute
Thu Jul 30, 2020 10:47 pm
Forum: General discussion
Topic: Notepad++
Replies: 51
Views: 6090

Re: Notepad++

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...
by knute
Thu Jul 30, 2020 7:25 pm
Forum: Troubleshooting
Topic: PI 4 8gig no sound ever
Replies: 2
Views: 160

Re: PI 4 8gig no sound ever

Are you running the 5.4 kernel and the vc4-kms-v3d overlay?
by knute
Thu Jul 30, 2020 7:14 pm
Forum: General discussion
Topic: Notepad++
Replies: 51
Views: 6090

Re: Notepad++

I've got wine on my Xubuntu box and Notepad++. Seems to work fine. I think it would work on a Pi too.
by knute
Wed Jul 29, 2020 10:24 pm
Forum: Troubleshooting
Topic: Pi 4 no sound
Replies: 3
Views: 281

Re: Pi 4 no sound

Do you have the 5.4 kernel and the vc4-kms-v3d overlay?
by knute
Fri Jul 24, 2020 2:46 pm
Forum: Beginners
Topic: Questions about programming on the Raspberry Pi [spam]
Replies: 10
Views: 623

Re: Questions about programming on the Raspberry Pi

If you are used to C# I would just use Java. But then I would use Java anyway :-).
by knute
Thu Jul 23, 2020 8:09 pm
Forum: Troubleshooting
Topic: allo piano 2.1 dac , no audio after updating kernel to 5.4.51
Replies: 4
Views: 288

Re: allo piano 2.1 dac , no audio after updating kernel to 5.4.51

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.
by knute
Wed Jul 22, 2020 3:11 pm
Forum: Troubleshooting
Topic: 5.4 kernel audio stopped and Pi freezes - Update!
Replies: 0
Views: 126

5.4 kernel audio stopped and Pi freezes - Update!

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...
by knute
Tue Jul 21, 2020 11:03 pm
Forum: Troubleshooting
Topic: allo piano 2.1 dac , no audio after updating kernel to 5.4.51
Replies: 4
Views: 288

Re: allo piano 2.1 dac , no audio after updating kernel to 5.4.51

I'm seeing the same problem, no audio after kernel 5.4. I installed 5.4 through apt.
by knute
Tue Jul 21, 2020 10:54 pm
Forum: Beginners
Topic: Creating GUI to control GPIO using qt 3d studio
Replies: 3
Views: 148

Re: Creating GUI to control GPIO using qt 3d studio

I wrote one in Java that you could modify: http://pi.knutejohnson.com
by knute
Tue Jul 21, 2020 10:43 pm
Forum: Java
Topic: 64-bit Java on RPi4
Replies: 4
Views: 2026

Re: 64-bit Java on RPi4

bell-sw.com
by knute
Tue Jul 21, 2020 10:34 pm
Forum: Advanced users
Topic: Moving Linux Kernel to 5.4
Replies: 474
Views: 84807

Re: Moving Linux Kernel to 5.4

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.
by knute
Sun Jul 19, 2020 8:13 pm
Forum: Automation, sensing and robotics
Topic: Remote Wireless Temperature Sensor
Replies: 2
Views: 414

Re: Remote Wireless Temperature Sensor

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...
by knute
Wed Jul 15, 2020 4:24 pm
Forum: Troubleshooting
Topic: pigpiod error message?
Replies: 13
Views: 591

pigpiod error message?

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
by knute
Wed Jul 08, 2020 6:56 pm
Forum: Beginners
Topic: FTP server -vsftpd show wrong time +3 from my time
Replies: 4
Views: 276

Re: FTP server -vsftpd show wrong time +3 from my time

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
by knute
Tue Jul 07, 2020 3:50 pm
Forum: Beginners
Topic: FTP server -vsftpd show wrong time +3 from my time
Replies: 4
Views: 276

Re: FTP server -vsftpd show wrong time +3 from my time

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 ...
by knute
Mon Jun 29, 2020 4:15 pm
Forum: Java
Topic: Java JIT availability on OpenJDK 11
Replies: 1
Views: 709

Re: Java JIT availability on OpenJDK 11

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.
by knute
Tue Jun 23, 2020 7:33 pm
Forum: Networking and servers
Topic: Help installing Oracle JDK 8/Airsonic
Replies: 7
Views: 445

Re: Help installing Oracle JDK 8/Airsonic

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/...
by knute
Tue Jun 23, 2020 12:56 am
Forum: Networking and servers
Topic: Help installing Oracle JDK 8/Airsonic
Replies: 7
Views: 445

Re: Help installing Oracle JDK 8/Airsonic

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...
by knute
Sun Jun 21, 2020 6:22 pm
Forum: Networking and servers
Topic: Help installing Oracle JDK 8/Airsonic
Replies: 7
Views: 445

Re: Help installing Oracle JDK 8/Airsonic

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
by knute
Sun Jun 21, 2020 6:07 pm
Forum: General discussion
Topic: Shortest possible firewall rule set
Replies: 1
Views: 160

Re: Shortest possible firewall rule set

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?
by knute
Fri Jun 12, 2020 2:38 am
Forum: Troubleshooting
Topic: UFW Firewall Rules
Replies: 6
Views: 291

Re: UFW Firewall Rules

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...
by knute
Tue Jun 09, 2020 3:48 pm
Forum: Troubleshooting
Topic: UFW Firewall Rules
Replies: 6
Views: 291

Re: UFW Firewall Rules

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...
by knute
Mon Jun 08, 2020 3:13 pm
Forum: Troubleshooting
Topic: UFW Firewall Rules
Replies: 6
Views: 291

Re: UFW Firewall Rules

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.
by knute
Sun Jun 07, 2020 8:44 pm
Forum: General discussion
Topic: USB MSD bootloader EEPROM second update 2020-06-03 - BETA
Replies: 54
Views: 5952

Re: USB MSD bootloader EEPROM 2020-06-03 - BETA

If you want to use a JMicron controller, quirks are your only option. I didn't know there was an issue with JMicron controllers so I just used it and it appears to work just fine? Bus 002 Device 002: ID 152d:0583 JMicron Technology Corp. / JMicron USA Technology Corp. [ 3.145447] usb 2-2: new Super...
by knute
Thu Jun 04, 2020 7:05 pm
Forum: General discussion
Topic: Questions about programming on the Raspberry Pi
Replies: 20
Views: 1330

Re: Questions about programming on the Raspberry Pi

If you are familiar with C# I would suggest Java. I would suggest Java anyway but that's just me :-) You can develop on any computer and run it on the Pi or you can develop on the Pi. It has a good selection of widgets, excellent graphics capabilities, a huge stable API and runs quite fast once load...

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