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by jamesh
Mon Sep 24, 2018 9:39 am
Forum: General discussion
Topic: Updated FAQ page.
Replies: 16
Views: 497

Re: Updated FAQ page.

OK, have made the obvious corrections, but any suggestions that require larger rewrites I have left for the moment, as I just want to correct mistakes.

Website usually follows github changes after about an hour.
by jamesh
Mon Sep 24, 2018 9:12 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 217
Views: 7633

Re: Multiple Frame buffer beta testers wanted

Sounds plausable, however if composite were enabled shouldent any writes to "hdmi" go to composite and be "lost"? What I am seeing is that the image I was sending to hdmi is being over written on the lcd. fyi: When hdmi is connected, fb0 appears to be hdmi. fb1 is lcd. I hard code this in my call t...
by jamesh
Mon Sep 24, 2018 8:00 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 217
Views: 7633

Re: Multiple Frame buffer beta testers wanted

Hay @jamesh I thought that to but when I ls /dev with one screen, I see both fb1 and fb0 even though hdmi is disconnected. stating the two results in: [email protected]:/dev $ stat fb1 File: fb1 Size: 0 Blocks: 0 IO Block: 4096 character special file Device: 6h/6d Inode: 1109 Links: 1 Device type: 1d,...
by jamesh
Sun Sep 23, 2018 7:53 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 217
Views: 7633

Re: Multiple Frame buffer beta testers wanted

raffie78 wrote:
Fri Sep 21, 2018 8:49 am
I fixed it - I had to change ColorDepth from 16 to 24bit and now all is working fine now

other question: will this firmware became part of the distro?
Indeed - for a contiguous desktop, all the FB's must be compatible.

Yes, this will, I hope, become part of the main distro.
by jamesh
Sun Sep 23, 2018 7:52 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 217
Views: 7633

Re: Multiple Frame buffer beta testers wanted

Just check to see if /dev/fb0 and /dev/fb1 exist. Most programming languages allow you to stat a file like that.

You will only get the fb1 if two screens are atached.
by jamesh
Sun Sep 23, 2018 5:49 pm
Forum: Troubleshooting
Topic: The USB power appeal
Replies: 41
Views: 1061

Re: The USB power appeal

Could you answer my question? Not at the moment as I am not at work today :) To answer your question. Yes, it is completely safe to pull current from the USB ports. Millions of people do it without problem with devices from low power to high power with no problems. If you start puling too much the ...
by jamesh
Sun Sep 23, 2018 10:53 am
Forum: General discussion
Topic: aliexpress warranty for raspberry pi
Replies: 3
Views: 178

Re: aliexpress warranty for raspberry pi

They are not an official reseller, so won't be any official warantee help, but what is the problem with the Pi itself?
by jamesh
Sun Sep 23, 2018 10:51 am
Forum: Troubleshooting
Topic: Aircrack
Replies: 1
Views: 48

Re: Aircrack

I'm not sure the Pi wireless chip driver supports monitor mode. Think there is some development going on, or was if I remember the kernel mailing list correctly.

Worth googling I suspect.
by jamesh
Sun Sep 23, 2018 10:47 am
Forum: General discussion
Topic: Updated FAQ page.
Replies: 16
Views: 497

Re: Updated FAQ page.

fbe wrote:
Sun Sep 23, 2018 9:43 am
If you look at the HTML source you will notice that a leading dot is missing.
OK, nice easy fix but not sure why it worked earlier. No worries, its a quick fix Monday.
by jamesh
Sun Sep 23, 2018 6:52 am
Forum: Troubleshooting
Topic: The USB power appeal
Replies: 41
Views: 1061

Re: The USB power appeal

If you stick to using standard mA instead of your "units", it will help others understand your posts a bit better Sorry mate - but the units are not mine only defined in the USB standard. And I think, only pepole who know what does it mean can answer this question. If someone does not - just does n...
by jamesh
Sat Sep 22, 2018 10:31 pm
Forum: C/C++
Topic: Where did the C or C++ thread go?
Replies: 2
Views: 133

Re: Where did the C or C++ thread go?

No idea where it's gone. Wasn't me! Unlikely to be a deliberate complete delete, may have been done in error?
by jamesh
Sat Sep 22, 2018 10:28 pm
Forum: General discussion
Topic: Updated FAQ page.
Replies: 16
Views: 497

Re: Updated FAQ page.

Thanks all, will sort out this stuff on Monday. Not sure what's happened to all the links, it all worked in my tests so something went pear shaped when transferred to the website.
by jamesh
Fri Sep 21, 2018 3:31 pm
Forum: Other projects
Topic: Reusing/Interfacing a Mini PCIe wifi Card
Replies: 3
Views: 5166

Re: Reusing/Interfacing a Mini PCIe wifi Card

Please start a new thread.
by jamesh
Fri Sep 21, 2018 2:30 pm
Forum: Troubleshooting
Topic: The USB power appeal
Replies: 41
Views: 1061

Re: The USB power appeal

What model is the dongle you plug in that causes the problem? Can you provide a link to its specification?
by jamesh
Fri Sep 21, 2018 12:11 pm
Forum: Troubleshooting
Topic: The USB power appeal
Replies: 41
Views: 1061

Re: The USB power appeal

No - as I wrote it was just the Pi connected to the monitor + the dongle . Nothing else. Most odd then. I suspect the dongle is broken and shorting something out, but difficult to tell. Clearly not in inherent issue with the Pi itself, if all other devices seem to work fine (ie for everyone else ou...
by jamesh
Fri Sep 21, 2018 10:48 am
Forum: Troubleshooting
Topic: The USB power appeal
Replies: 41
Views: 1061

Re: The USB power appeal

Yes -- just the dongle and the HDMI to set the WiFi password and to enable the SSH. Then I access the Pi remotely. My hats actually are not connected to the USB -> https://www.diymat.co.uk/product-category/raspberry-pi-hats-accesories/diymat-raspberry-pi-hats/ By the time it happens I did not conne...
by jamesh
Fri Sep 21, 2018 10:27 am
Forum: Troubleshooting
Topic: The USB power appeal
Replies: 41
Views: 1061

Re: The USB power appeal

Most of the boards died (I have killed 3 of them this way) when I was connecting the HP wireless dongle Occam's Razor means that its your wireless dongle that is suspect Thank you :) But if you read my previous post - it is not the suspect. As I wrote I have tested it an hour ago. Works as it shoul...
by jamesh
Fri Sep 21, 2018 10:22 am
Forum: General discussion
Topic: Announcements
Replies: 39
Views: 19557

Updated FAQ page

We have moved the FAQ page to the github repo, and updated it at the same time. New location is https://www.raspberrypi.org/documentation/faqs/ but we have a redirect on the old page so links should still work. Any comments or mistakes, please use this thread https://www.raspberrypi.org/forums/viewt...
by jamesh
Fri Sep 21, 2018 10:22 am
Forum: General discussion
Topic: Updated FAQ page.
Replies: 16
Views: 497

Updated FAQ page.

Moved to github and updated.

https://www.raspberrypi.org/documentation/faqs/

Please report any issues or request additions in this thread.

Thanks.
by jamesh
Fri Sep 21, 2018 10:13 am
Forum: General discussion
Topic: Which Raspberry Pi Should I Buy
Replies: 27
Views: 638

Re: Which Raspberry Pi Should I Buy

What was the figure quoted above ? 40 issues? Out of approximately 2 million 3B+ sold. Yes, that many. Not only that but some of those issues caused by people shorting out the Pi whilst powered up. So user error. The 3B+ is not overly delicate, unless you count a 0.002% failure rate as overly delic...
by jamesh
Fri Sep 21, 2018 8:47 am
Forum: Troubleshooting
Topic: The USB power appeal
Replies: 41
Views: 1061

Re: The USB power appeal

It would make life easier if unveil that "secret" part of your schematic. I am pretty sure that you have replaced a huge number dead USB RPIs Now I eve do not know if I should port my software as the RPi is not conforming the USB2 standard and the device may potentially damage the device. Thank you...
by jamesh
Fri Sep 21, 2018 8:17 am
Forum: Troubleshooting
Topic: RPi Zero + Raspbian Stretch send Oops when starting Kodi
Replies: 4
Views: 87

Re: RPi Zero + Raspbian Stretch send Oops when starting Kodi

You have run rpi-update which installs a possibly buggy kernel/firmware - this is a branch for testing only.

Option 1. Revert back to the current release verson of Raspbian.

OR, OPtion 2. There was a recent bug fix that IS in the very very latest rpi-update, which might fix the problem.
by jamesh
Thu Sep 20, 2018 8:03 pm
Forum: General discussion
Topic: Which Raspberry Pi Should I Buy
Replies: 27
Views: 638

Re: Which Raspberry Pi Should I Buy

The 3B+ is not overly delicate, unless you count a 0.002% failure rate as overly delicate. Isn't it a bit disingenuous to imply that out of 2 million sold only 40 have succumbed in this way? I think 40 was an estimate of the number of people who have posted about it in the forum. I'm sure the Raspb...
by jamesh
Thu Sep 20, 2018 7:56 pm
Forum: Official Foundation Display
Topic: official raspberry pi touchscreen registers
Replies: 1
Views: 65

Re: official raspberry pi touchscreen registers

The TS interface is handled by the GPU, so we have never published the datasheet. There is a mailbox call to grab the data rom it though - you can see this usage in the Linux driver.
by jamesh
Thu Sep 20, 2018 7:54 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: how to use the GPIOs
Replies: 18
Views: 479

Re: Hardware

Hai everybody, Thanks for all the input. Apologies for posting this in the wrong forum section: I am a newbie you know ;) I can't imagine that I am the only one getting on-line to find proper schema's to link mains to the raspberry. I think we all agree that safety is important, which is perhaps on...

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