Go to advanced search

by fanoush
Sun Jun 14, 2020 1:23 pm
Forum: Advanced users
Topic: Pi4 64-bit raspbian kernel for testing - Focus on Pi4
Replies: 350
Views: 131911

Re: Pi4 64-bit raspbian kernel for testing - Focus on Pi4

jiapei100 wrote:
Wed Jun 10, 2020 8:12 pm
Did anybody have the same issue?
yes, search this topic for 'docker'
by fanoush
Tue Jun 09, 2020 9:20 pm
Forum: Raspberry Pi OS
Topic: No Sound on New Pi OS
Replies: 9
Views: 683

Re: No Sound on New Pi OS

Nothing described here helped for me after recent update. No sound from headphone jack. What helped is uninstalling pulseaudio, then it started to work immediately. Tried to reinstall pulseaudio and it stopped working again so looks like pulseaudio cannot cope with this change. I had pulseaudio inst...
by fanoush
Sun Jun 07, 2020 7:49 pm
Forum: Beginners
Topic: USB to SATA dongle disabling WIFI on Pi 4
Replies: 4
Views: 211

Re: USB to SATA dongle disabling WIFI on Pi 4

this is generic usb3.0 issue see whitepaper here https://www.intel.com/content/www/us/en/products/docs/io/universal-serial-bus/usb3-frequency-interference-paper.html I have noticed this with bluetooth low energy devices and my usb 3.0 M.2 ssd. It helped me a lot to wrap the ssd including cable and p...
by fanoush
Sun Jun 07, 2020 7:12 pm
Forum: Beginners
Topic: No sound after update
Replies: 2
Views: 179

Re: No sound after update

if you mean headphone jack there is already thread about this here https://www.raspberrypi.org/forums/viewtopic.php?f=66&t=276110 I have same issue after upgrading yesterday and unfortunately no rebooting or deleting .asoundrc or reselecting source in the applet does not help. I guess it may be rela...
by fanoush
Tue Jun 02, 2020 8:26 am
Forum: Advanced users
Topic: multiple BT connection
Replies: 13
Views: 676

Re: multiple BT connection

You can put almost anything into advertising packet just be aware of size limitation - 31 bytes. There are some assigned ids here https://www.bluetooth.com/specifications/assigned-numbers/generic-access-profile/ e.g. name is 0x09, structure is sequence of length,type,value,.. Good is to use nrfconne...
by fanoush
Mon Jun 01, 2020 6:15 pm
Forum: Advanced users
Topic: multiple BT connection
Replies: 13
Views: 676

Re: multiple BT connection

what to read data (in this case CPU temperature) with multiple device from the Pi. ATM if I connect with nRF Connect to the PI with a smartphone I can't connect another smartphone without disconnect before the first one You don't need connection for that, you can put temperature and more informatio...
by fanoush
Tue Mar 10, 2020 2:50 pm
Forum: Off topic discussion
Topic: How do I recover a bricked SD card
Replies: 10
Views: 1941

Re: How do I recover a bricked SD card

For some reason the adapters that came with the new micro SD cards were faulty and set to read only despite the position of the lock switch being in the correct position. Happened to me too. This is purely mechanical issue. Maybe the lock plastic is moving to read only position when you insert it a...
by fanoush
Wed Mar 04, 2020 6:40 pm
Forum: Troubleshooting
Topic: Pi4 won't boot after apparently loading
Replies: 9
Views: 630

Re: Pi4 won't boot after apparently loading

Sorry I wasn't clear. i'm not using a hdmi-to-vga adapter. I did not expect you to be using one and still it may make sense to try reconnecting the cable if the system looks booted and you see nothing on display. In my case I guess the adapter slows down display identification at early boot time an...
by fanoush
Wed Mar 04, 2020 11:51 am
Forum: Troubleshooting
Topic: Pi4 won't boot after apparently loading
Replies: 9
Views: 630

Re: Pi4 won't boot after apparently loading

Also if you will hardcode some display mode and after boot you see no picture it may help to disconnect hdmi cable and reconnect it again after the system is booted, the picture might appear. I have flat panel monitor with analog VGA input only and use it with hdmi to vga adapter. I have 1280x1024 m...
by fanoush
Fri Feb 28, 2020 6:31 am
Forum: Networking and servers
Topic: Problems adding a USB 3.0 SSD to PI4
Replies: 35
Views: 2884

Re: Problems adding a USB 3.0 SSD to PI4

ejolson wrote:
Fri Feb 28, 2020 5:35 am
I wonder if shielded USB cables would help. Are you sure the noise isn't coming from your power supply instead?
Interesting paper about this usb 3.0 interference issue
https://www.intel.com/content/www/us/en ... paper.html
by fanoush
Fri Feb 21, 2020 1:10 pm
Forum: Advanced users
Topic: Pi4 64-bit raspbian kernel for testing - Focus on Pi4
Replies: 350
Views: 131911

Re: Pi4 64-bit raspbian kernel for testing - Focus on Pi4

I don't get it. Why you cannot confirm it yourself by commenting out the 'arm_64bit=1' in config.txt, rebooting, testing if the issue is gone and reenabling that line again? Takes like 1 minute?
by fanoush
Fri Feb 21, 2020 8:39 am
Forum: Advanced users
Topic: Pi4 64-bit raspbian kernel for testing - Focus on Pi4
Replies: 350
Views: 131911

Re: Pi4 64-bit raspbian kernel for testing - Focus on Pi4

After upgrading I noticed that vscode server, used for remote development using vs-code, doesn't seem to work any more on the pi. Well, anything that tries to determine architecture of the system now gets 'aarch64' from the 64bit kernel so that may break it. You can confirm this is the case by swit...
by fanoush
Tue Feb 11, 2020 11:43 am
Forum: Bare metal, Assembly language
Topic: Pi Zero W - Alternative boot options
Replies: 11
Views: 964

Re: Pi Zero W - Alternative boot options

I was wondering if No-one has done it because it isn't worth the effort for what you get. is true? I saw that christinaa's work was not finished but at least somewhat working. Or do you mean that no one has made a Pi successfully and completely boot with a custom bootloader? There is also fork that...
by fanoush
Mon Feb 10, 2020 3:41 pm
Forum: Bare metal, Assembly language
Topic: Pi Zero W - Alternative boot options
Replies: 11
Views: 964

Re: Pi Zero W - Alternative boot options

It can boot over USB, so if your chip can do USB host it is possible. Also there is possibly SPI boot mode but I didn't find working example. But as the boot ROM can be read and disassembled it is possible to figure it out I guess.

BTW why not to use Circle or Ultibo?
by fanoush
Wed Feb 05, 2020 6:26 pm
Forum: General discussion
Topic: Raspberry Pi Zero - Version 2?
Replies: 76
Views: 7933

Re: Raspberry Pi Zero - Version 2?

jdb wrote:
Wed Feb 05, 2020 5:52 pm
Because you would get a model that had neither Ethernet nor USB. Well, no USB host ports - but a single OTG port.
Which is just like A+ or 3A+?
And maybe on 4A+ you could put M.2 or mini pci-e slot on the bottom side?
by fanoush
Sat Feb 01, 2020 6:44 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 63820

Re: New Pi 4B v1.2?

W. H. Heydt wrote:
Sat Feb 01, 2020 6:18 pm
This is a minor error. Unless one is going to particularly expensive power cables or supplies, one would never notice the "problem".
There is also the reboot issue with hat attached https://github.com/raspberrypi/linux/issues/3065
by fanoush
Fri Jan 31, 2020 1:31 pm
Forum: Beginners
Topic: ARM Frequency
Replies: 16
Views: 1924

Re: ARM Frequency

Botspot wrote:
Wed Jan 29, 2020 12:38 am
Please ignore Gavinmc42 , they misunderstood the question being asked.
Oh, I always thought there must be far more people behind Gavinmc42 than just one ;-)
However in this case I think at least one of them did understood the question and answered quite sensibly :-)
by fanoush
Fri Jan 31, 2020 12:57 pm
Forum: Troubleshooting
Topic: Swap file full with real RAM at 5% ??? Memory doubts
Replies: 9
Views: 834

Re: Swap file full with real RAM at 5% ??? Memory doubts

BTW what is the purpose of a 100MB swap file To kill your SD card with swap-hell when you go slightly over physical memory limits ;-) It was important to make is too small or otherwise you would notice and could prevent it when you notice the slowdown. With 100MB it is from full speed into swap hel...
by fanoush
Fri Jan 24, 2020 4:11 pm
Forum: Beginners
Topic: Is this possible to do with RaspberryPi - serial control of TV
Replies: 8
Views: 515

Re: Is this possible to do with RaspberryPi - serial control of TV

If you go this route, it is ESSENTIAL to use an adapter based on MAX3232, or equivalent with 3V3 connection to the Pi. Good point about 5V vs 3.3V. The adapter looks like it has only 4 pins - GND,VCC,RX,TX so hopefully you can put 3.3V from Pi to VCC and TX/RX levels will then match. Here is anothe...
by fanoush
Fri Jan 24, 2020 12:21 pm
Forum: Beginners
Topic: Is this possible to do with RaspberryPi - serial control of TV
Replies: 8
Views: 515

Re: Is this possible to do with RaspberryPi - serial control of TV

Looks like it can be done in two different ways , with multiple HDMI ports and a serial port. I also have the documentation for this serial port which shows that via serial commands it should be possible to change standby to on and off, and change input from HDMI1 to HDMI2. If the serial port on TV ...
by fanoush
Wed Jan 22, 2020 11:15 pm
Forum: Advanced users
Topic: Pi4 64-bit raspbian kernel for testing - Focus on Pi4
Replies: 350
Views: 131911

Re: Pi4 64-bit raspbian kernel for testing - Focus on Pi4

In that GitHub issue: https://github.com/docker/distribution/issues/3008 they've posted some workarounds. You can add either --privileged or --security-opt seccomp:unconfined . Wow that's great, it works! And there is also third solution mentioned which hopefully keeps security restrictions enabled...
by fanoush
Tue Dec 31, 2019 10:31 pm
Forum: Beginners
Topic: Pi Zero W - mini hdmi to VGA
Replies: 11
Views: 658

Re: Pi Zero W - mini hdmi to VGA

W. H. Heydt wrote:
Tue Dec 31, 2019 3:17 am
it is unlikely that you'll find a mini-HDMI to VGA converter.
I have one from ebay, was for same price like the full hdmi to vga (~5USD?). see photo here https://ibb.co/KD4TBkj
by fanoush
Mon Dec 23, 2019 8:31 am
Forum: General discussion
Topic: Pi Zero W multi purchases
Replies: 64
Views: 5189

Re: Pi Zero W multi purchases

X-Gen wrote:
Mon Dec 23, 2019 7:00 am
The wifi on the Zeros can easily be switched to a different channel.
In USA there are about 11 channels (I believe 13 for UK) to set each device to.
This prevents cross talk, network collisions etc...
In fact those channels overlap a lot. What you said it true only when using channels 1,6 and 11.
by fanoush
Tue Dec 10, 2019 1:53 pm
Forum: General discussion
Topic: Pi Zero W multi purchases
Replies: 64
Views: 5189

Re: Pi Zero W multi purchases

The $5 Pi Zero price, and the $10 Pi Zero W price are a One-Per-Customer introductory price (so everyone can get at least one cheap computer). This is what we were told years ago by representatives of RPF, and nothing has changed (and is not likely to change, ever). When mentioning this it would be...
by fanoush
Thu Dec 05, 2019 3:00 pm
Forum: Off topic discussion
Topic: Does this forum have a 'dark' mode ?
Replies: 26
Views: 4904

Re: Does this forum have a 'dark' mode ?

I think OP asked for visual dark mode of this forum ;-)
Sometimes it is quite dark even with shiny colours.

Go to advanced search