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by jamesh
Sun Aug 19, 2018 4:48 pm
Forum: Troubleshooting
Topic: Bandwidth from RPI higher than TO RPI from W10
Replies: 5
Views: 112

Re: Bandwidth from RPI higher than TO RPI from W10

This looks like a flow control issue, you need to turn on flow control on your router to ensure that the receiving Raspberry Pi doesn't get flooded by packets. It might be called pause frames or something similar. The symptoms are the download speeds are around 60 to 80 megabits per second whereas u...
by jamesh
Sun Aug 19, 2018 4:43 pm
Forum: General discussion
Topic: Link Spammers
Replies: 1
Views: 138

Re: Link Spammers

Yes, well aware of the problem. We have just added some extra spam filtering, but I don't think it covers this particular issue. As mods we do keep an eye out for this on first posts, but you cannot catch everything. So use the report system to flag up those that get through. Thanks for the heads up.
by jamesh
Thu Aug 16, 2018 6:01 pm
Forum: Off topic discussion
Topic: With software, there's always a better way to do it
Replies: 24
Views: 562

Re: With software, there's always a better way to do it

I really do think we're talking about refactoring or completely rewriting rather than optimisation. if you are throwing away the existing code and rewriting from scratch perhaps using Neon instructions that's not optimisation, that is a complete rewrite. You now have the opportunity to parallelize a...
by jamesh
Thu Aug 16, 2018 3:08 pm
Forum: Off topic discussion
Topic: With software, there's always a better way to do it
Replies: 24
Views: 562

Re: With software, there's always a better way to do it

The bigger picture - the software that runs the world falls in the same bucket. What on earth is that supposed to mean? The software that runs the world has been developed over that last 50 years and is now being optimised in hardware with every new processor (just wait for commercial scale quantum...
by jamesh
Thu Aug 16, 2018 12:24 pm
Forum: Off topic discussion
Topic: With software, there's always a better way to do it
Replies: 24
Views: 562

Re: With software, there's always a better way to do it

Heater wrote:
Thu Aug 16, 2018 11:26 am
One question might be, why does Apple use an un-optimised reference version of this library?
Is it so that not many people use or care about this thing?
Because perfection is the enemy of good enough?
by jamesh
Thu Aug 16, 2018 11:09 am
Forum: Off topic discussion
Topic: Nomenclature of the Future
Replies: 9
Views: 263

Re: Nomenclature of the Future

To be honest it seems unlikely that there will be a Pi4 without wireless.
by jamesh
Thu Aug 16, 2018 11:06 am
Forum: Off topic discussion
Topic: With software, there's always a better way to do it
Replies: 24
Views: 562

Re: With software, there's always a better way to do it

Once you've taken the x264 open source library and optimised that run even faster then I think I might believe you. Until then I found your article lacking in any real statistical relevance. You've extrapolated from one open source library to say the same thing happens in tens of thousands of other ...
by jamesh
Mon Aug 13, 2018 6:17 am
Forum: For sale
Topic: Terrible service from an official Pi reseller. The Pi Shop
Replies: 4
Views: 259

Re: Terrible service from an official Pi reseller. The Pi Shop

I'll leave this post up, but closing the thread as we don't want a slanging match.
by jamesh
Mon Aug 13, 2018 6:16 am
Forum: For sale
Topic: Terrible service from an official Pi reseller. The Pi Shop
Replies: 4
Views: 259

Re: Terrible service from an official Pi reseller. The Pi Shop

They not, afaik, an official supplier. They pick us, we don't pick them.
by jamesh
Sun Aug 12, 2018 7:44 am
Forum: Troubleshooting
Topic: Wired Ethernet upload faster than download
Replies: 21
Views: 455

Re: Wired Ethernet upload faster than download

Upload can simply go as fast as the router allows. Download requires the flow control since the Pi cannot handle receiving data at the full gigabit rate.

Looks like your router has pause frames turned off.
by jamesh
Sun Aug 12, 2018 7:40 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 169
Views: 5466

Re: Multiple Frame buffer beta testers wanted

:D Hi jamesh, Made some further tests yesterday where I was simply running omxplayer in window mode (outputing to DPI or HDMI). As already reported in an earlier post this may result in the other screen going all black, or not working at all (irregular display due to screwed-up timings). What I wan...
by jamesh
Fri Aug 10, 2018 3:40 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Add/Remove SW tool does not have the latest distributions
Replies: 3
Views: 99

Re: Add/Remove SW tool does not have the latest distributions

The RPD is based on the Debian distribution - in effect all we do it add our own desktop (plus a few other bits and pieces), and package it all up. So really, as the fruit says, it's down to Debian to detemine what they include. They are very conservative and have specific rules on what they upgrade...
by jamesh
Fri Aug 10, 2018 1:23 pm
Forum: General discussion
Topic: Announcements
Replies: 36
Views: 18558

Various Docs updates

Various documentation additions/changes https://www.raspberrypi.org/documentation/hardware/raspberrypi/peripheral_addresses.md https://www.raspberrypi.org/documentation/hardware/raspberrypi/otpbits.md https://www.raspberrypi.org/documentation/hardware/raspberrypi/frequency-management.md https://www....
by jamesh
Fri Aug 10, 2018 1:18 pm
Forum: General discussion
Topic: Announcements
Replies: 36
Views: 18558

PoE HAT compliance

by jamesh
Fri Aug 10, 2018 1:17 pm
Forum: Add-ons
Topic: ETA for Official POE Hat for 3B+
Replies: 52
Views: 1175

Re: ETA for Official POE Hat for 3B+

Also, compliance documentation has been uploaded

https://www.raspberrypi.org/documentati ... formity.md
by jamesh
Fri Aug 10, 2018 1:16 pm
Forum: Advanced users
Topic: What value are those parts?
Replies: 36
Views: 941

Re: What value are those parts?

Why not ditch silkscreen printing on the actual device, just upload JPGs of front and back of the boards with the part numbers &c. marked on them? I would suggest some documentation along those lines already exists or almost no one within RPT would be able to identify which components were which. T...
by jamesh
Fri Aug 10, 2018 1:11 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 169
Views: 5466

Re: Multiple Frame buffer beta testers wanted

Not sure you can play a HW decoded video over two screens...in fact I think that might be impossible from a HW perspective. You need to specify which screen OMXPlayer outputs to, using the --display option. Takes numbers from 0 to 6 as follows DISPMANX_ID_MAIN_LCD 0 DISPMANX_ID_AUX_LCD 1 DISPMANX_ID...
by jamesh
Fri Aug 10, 2018 12:51 pm
Forum: Other projects
Topic: navigation computer
Replies: 11
Views: 5861

Re: navigation computer

I was fiddling with a similar idea for a bit, it was fairly easy to get everything set up, and at least competitive with the prices of lower end products (about 45$ for GPS chip from Adafruit, 5$ pi zero from anywhere, gpio attached screen 25-60$ depending on various qualities of the screen). The e...
by jamesh
Fri Aug 10, 2018 12:18 pm
Forum: Graphics, sound and multimedia
Topic: Exploring Python-Timidity
Replies: 10
Views: 208

Re: Exploring Python-Timidity

To the OP, can you improve your post by creating a more descriptive title, and also putting some more information in the post itself - its difficult to know what you are asking.
by jamesh
Fri Aug 10, 2018 10:42 am
Forum: General discussion
Topic: Recommended software to install on RPi?
Replies: 17
Views: 4473

Re: Recommended software to install on RPi?

Ceppetto wrote:
Fri Aug 10, 2018 10:29 am
putty

Code: Select all

sudo apt-get update sudo apt-get install putty
Often worthwhile checking the date of the last post in a thread to make sure you are not 'necroing' it.

In this case, you might actually have won the prize for the oldest necro - nearly 5 years since the last post.
by jamesh
Fri Aug 10, 2018 10:40 am
Forum: Advanced users
Topic: What value are those parts?
Replies: 36
Views: 941

Re: What value are those parts?

... And when the BBC Micro was around ... The world has changed, whether people like it or not. Those were the days ... I remember when mobile phones were brick-sized, and schematics were printed on actual paper! Why not ditch silkscreen printing on the actual device, just upload JPGs of front and ...
by jamesh
Fri Aug 10, 2018 10:08 am
Forum: Advanced users
Topic: What value are those parts?
Replies: 36
Views: 941

Re: What value are those parts?

OK, here's a challenge. Look at the collection of components on the underside of the board, betweemn the memory and the SD card slot. I have to use a magnifier just to make some of them out. Now explain to me how you silkscreen the board to describe those components. It's not really possible for com...
by jamesh
Fri Aug 10, 2018 9:57 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 169
Views: 5466

Re: Multiple Frame buffer beta testers wanted

Here's the latest builds, might be worth trying these.

https://drive.google.com/open?id=1At1jm ... FYE_HxOa9Z

This is for kernel 4.14.61 - so the current rpi-update.

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