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by Technocolour
Tue Dec 10, 2019 6:19 am
Forum: General discussion
Topic: Raspberry pi 4 not working on 16:9 aspcet ratio
Replies: 3
Views: 116

Re: Raspberry pi 4 not working on 16:9 aspcet ratio

I can't see those images.

It's your hdmi cable set to port 1?

Do you use any adapters?

And Google RPi4 EDID and how the RPi engineers want that presented.
by Technocolour
Wed Dec 04, 2019 9:43 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 951
Views: 114619

Re: Raspberry Pi 4 Thread - general discussion

If I recall*, one of the engineers actually commented on that "secret project" and corrected the media, stating that it was more like seven projects. * my mind is known to be prone to bit corruption and read errors. I wouldn't take that comment too seriously. Even if it's true (if), it could be... ...
by Technocolour
Wed Dec 04, 2019 8:53 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 951
Views: 114619

Re: Raspberry Pi 4 Thread - general discussion

If I recall*, one of the engineers actually commented on that "secret project" and corrected the media, stating that it was more like seven projects. * my mind is known to be prone to bit corruption and read errors. I wouldn't take that comment too seriously. Even if it's true (if), it could be... ...
by Technocolour
Sat Nov 30, 2019 7:50 am
Forum: General discussion
Topic: New Raspian Buster with 64 Bit...(arm64v8)
Replies: 69
Views: 3246

Re: New Raspian Buster with 64 Bit...(arm64v8)

MikeDB, ...is there a way of isolating parts of the shared cache ?... That is something I have never heard of. As an aside and a technical curiosity, you can do that on some game consoles. Iirc, he XBox 360 allowed you to segment the cache as you'd like between the three cores. I'm pretty sure ther...
by Technocolour
Fri Nov 22, 2019 9:25 am
Forum: General discussion
Topic: Raspberry Pi 4 Firmware Updates Tested 21/11
Replies: 20
Views: 1108

Re: Raspberry Pi 4 Firmware Updates Tested 21/11

How many other SBC's get that level of support ?? You're lucky if the other Fruity Pi SBC companies even acknowledge there is a problem. Even the venreable BeagleBoards are suceptable to that. I got a Beaglebone AI to play with the EVE DSP units for inferencing. I ran a webcam and some OpenCV code ...
by Technocolour
Sat Nov 09, 2019 6:57 pm
Forum: General discussion
Topic: Bluetooth transmiision?
Replies: 7
Views: 486

Re: Bluetooth transmiision?

Hi folks Well, the bluetooth is hopeless! It finds and connects to my Sony SRS-X2 speaker and then tells me to go to Preferences-> Audio Device Settings. On clicking on Select Controls, all I see is an entry PCM, no mention of the Sony. Also, despite saying it has connected correctly, the pairing l...
by Technocolour
Thu Nov 07, 2019 5:54 pm
Forum: General discussion
Topic: Avnet SmartEdge Raspberry Pi industrial IoT gateway
Replies: 0
Views: 94

Avnet SmartEdge Raspberry Pi industrial IoT gateway

I stumbled over this today, and thought it was kinda neat: https://www.geeky-gadgets.com/avnet-smartedge-raspberry-pi-16-09-2019/ Specifications of the Avnet SmartEdge Raspberry Pi-powered industrial IoT gateway : – Broadcom BCM2837 SoC, 64-bit, Quad-core ARM Cortex-A53 processor running up to 900 M...
by Technocolour
Tue Nov 05, 2019 10:08 pm
Forum: General discussion
Topic: Raspberry Pi 4 as a primary desktop computer?
Replies: 54
Views: 5962

Re: Raspberry Pi 4 as a primary desktop computer?

I think all the current changes should be in a apt full-upgrade. There are still issues with multiple BT audio devices paired at the same time, we are waiting a fix from the developer of the appropriate library. Ok! This is just one device. I sat down to have a look at this today. And began by runn...
by Technocolour
Wed Oct 30, 2019 7:08 am
Forum: General discussion
Topic: Pi 4 - full specification of VideoCore 6
Replies: 82
Views: 17301

Re: Pi 4 - full specification of VideoCore 6

Just want to leave here - my evaluation of VC6 performance (via GLES 3.1/ComputeShader from latest mesa 19.3-dev - see @jamesh post from 20191011) show good performance dependency from frequency only on few values: 500MHz(std), and downclocked 300MHz, 250MHz. Values like 400, 600 and 700MHz don't s...
by Technocolour
Mon Oct 28, 2019 12:50 pm
Forum: General discussion
Topic: Raspberry Pi 4 as a primary desktop computer?
Replies: 54
Views: 5962

Re: Raspberry Pi 4 as a primary desktop computer?

jamesh wrote:
Mon Oct 28, 2019 10:41 am
I think all the current changes should be in a apt full-upgrade.

There are still issues with multiple BT audio devices paired at the same time, we are waiting a fix from the developer of the appropriate library.
Ok! This is just one device.
by Technocolour
Mon Oct 28, 2019 10:29 am
Forum: General discussion
Topic: Raspberry Pi 4 as a primary desktop computer?
Replies: 54
Views: 5962

Re: Raspberry Pi 4 as a primary desktop computer?

I fixed the audio by starting again. I suspect you should do the same :-) Not sure what you mean by this - we have been making changes to the bcm audio drivers and Desktop panel applets to make the audio destination specification easier. Have those changes gone live BTW? I've got a BT speaker ( Duk...
by Technocolour
Fri Oct 25, 2019 10:16 am
Forum: General discussion
Topic: Trying to measure current going into Raspberry Pi
Replies: 6
Views: 566

Re: Trying to measure current going into Raspberry Pi

There are meters that compensate for the load and specialized devices to measure small currents, such as the EEVBlog microcurrent.

Have a look around. :)
by Technocolour
Thu Oct 24, 2019 8:06 pm
Forum: Troubleshooting
Topic: Latest Raspbian Buster + Upgrades - Still No BT Audio, not not even with speaker-test
Replies: 9
Views: 972

Re: Latest Raspbian Buster + Upgrades - No BT Audio

I have the same issue. I have some downloaded music on my raspberry pi 4 which works fine and I can hear the music on my jbl flip 2 which is connected to my raspberry pi 4. But when I go to youtube, I cannot hear any audio. Please check if you have the same issue. Try the following. 0 Close Chrome ...
by Technocolour
Thu Oct 24, 2019 8:03 pm
Forum: Troubleshooting
Topic: Latest Raspbian Buster + Upgrades - Still No BT Audio, not not even with speaker-test
Replies: 9
Views: 972

Re: Latest Raspbian Buster + Upgrades - No BT Audio

I tried to connect to my "Duke" BT speaker, it worked, and it outputs sound. The BT stack is a bit naughty in that you need to connect it first, and then you start Chrome, should you want to use your browser for music/sound. But the BT connection kept dropping? That has not happened before, previous...
by Technocolour
Sun Oct 20, 2019 1:04 pm
Forum: C/C++
Topic: cc: error trying to exec '/usr/lib/gcc/arm-linux-gnueabihf/8/cc1'
Replies: 2
Views: 1157

Re: cc: error trying to exec '/usr/lib/gcc/arm-linux-gnueabihf/8/cc1'

That's a good post, I learnt a bit, and I got things running again.

Well kind of, I still need to chase down what caused the calamity or reinstall things. But that's on me, not you.

Thank you swampdog!
by Technocolour
Sat Oct 19, 2019 8:41 pm
Forum: C/C++
Topic: cc: error trying to exec '/usr/lib/gcc/arm-linux-gnueabihf/8/cc1'
Replies: 2
Views: 1157

cc: error trying to exec '/usr/lib/gcc/arm-linux-gnueabihf/8/cc1'

So I've been messing with C a bit, but it seems like I've managed to break someting. When I run: make ex16 (Because it's exercise 16 in the book I'm using, I get) cc -Wall -g ex16.c -o ex16 cc: error trying to exec '/usr/lib/gcc/arm-linux-gnueabihf/8/cc1': execv: Formatfel på körbar fil make: *** [<...
by Technocolour
Sat Oct 19, 2019 8:35 am
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 3095

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

Ok so following: http://longsteve.com/wiki/index.php/USB_Hard_Drive_Encryption_on_a_Raspberry_Pi I have recrypted the drive with: cryptsetup --verify-passphrase luksFormat /dev/sda1 -c aes -s 256 -h sha256 and used EXT4 inside as suggested and guess what happened? It solved absolutely nothing, I wa...
by Technocolour
Fri Oct 18, 2019 2:45 pm
Forum: General discussion
Topic: Pi for Video processing and video hardware acceleration
Replies: 11
Views: 812

Re: Pi for Video processing and video hardware acceleration

Time is money, so look around the forums first before buying. If it seems to be ok, get one and play around a bit. If you're a hobbyist, you can learn a lot from it, and you get to be 100% sure if your particular use case works out or not. If it's for professional use, you should always run complian...
by Technocolour
Fri Oct 11, 2019 1:38 pm
Forum: General discussion
Topic: Pi 4 - full specification of VideoCore 6
Replies: 82
Views: 17301

Re: Pi 4 - full specification of VideoCore 6

So now we have an electromagnetic anechoic box from Micronix, and we are writing GPGPU library for VideoCore VI: https://github.com/Idein/py-videocore6 . It's working very well with simple loops e.g. https://github.com/Idein/py-videocore6/blob/master/tests/test_qpu.py and should work with more comp...
by Technocolour
Thu Oct 03, 2019 4:30 pm
Forum: General discussion
Topic: Where is the GPU on the Pi4 ?
Replies: 19
Views: 993

Re: Where is the GPU on the Pi4 ?

If prop_fail_during_lifetime*RPi_price* > heatsink_price*, then and only then should you buy a heat sink.

*Includes hassle, and what not.
by Technocolour
Thu Oct 03, 2019 10:10 am
Forum: General discussion
Topic: Raspi4 first usage
Replies: 11
Views: 513

Re: Raspi4 first usage

jamesh wrote:
Thu Oct 03, 2019 9:31 am
What power supply are you using?
The above is pertinent, since system instability may well be caused by an unsuitable PSU.

I also tested with my PC, it is just dead
There may be multiple reasons why a card doesn't show up on your PC, if you haven't tried it before.
by Technocolour
Thu Oct 03, 2019 4:59 am
Forum: General discussion
Topic: Raspberry Pi 4 and Buster Issues
Replies: 11
Views: 969

Re: Raspberry Pi 4 and Buster Issues

To get back on topic, you know with the OP that needed help: Specifically I would like to get a solid build of Alexa running. If I could have it display stuff on my magic mirror that would be a huge plus. All of the builds I have tried...probably 4 at this point all end in failure upon install. Usua...
by Technocolour
Tue Oct 01, 2019 3:15 pm
Forum: General discussion
Topic: Raspberry Pi 4 as a primary desktop computer?
Replies: 54
Views: 5962

Re: Raspberry Pi 4 as a primary desktop computer?

make, edit and flash codes to microchips You wouldn't happen to have experience with programming Atmel AVR under latest OS? This is one of the last barriers to my use as 'primary' PC. I had it working on a PC with USBASP but not on Pi and a couple different tutorials using GPIO w/o success either. ...
by Technocolour
Mon Sep 30, 2019 10:03 am
Forum: General discussion
Topic: Gap inside SPI clock
Replies: 14
Views: 843

Re: Gap inside SPI clock

https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=220428&p=1520375#p1520375 is where Eben Upton says it is fixed but reading closer, it may be that only the additional I2C controllers were fixed. Found this: https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=243372&start=850#p1534406 [ed...
by Technocolour
Sat Sep 28, 2019 8:46 pm
Forum: General discussion
Topic: Why did my post disappear?
Replies: 10
Views: 626

Re: Why did my post disappear?

B.Goode wrote:
Sat Sep 28, 2019 8:40 pm
...From recollection the substantive advice was to talk to the vendor.
That sounds like good advise, if it's a board that OP suspects is faulty.

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