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by RichardS
Tue Jun 12, 2018 8:02 am
Forum: Official Foundation Display
Topic: Using the touchscreen like a touchpad
Replies: 2
Views: 705

Re: Using the touchscreen like a touchpad

Technically, in a Linux X-Windows environment, you are supposed to be able to use xinput set-mode on the touchscreen device to change it to relative mode, but I couldn't get it to work on most of the touchscreen drivers I have tried, and the one time it did sort of work the result was unusable becau...
by RichardS
Sat Jun 09, 2018 7:08 pm
Forum: General discussion
Topic: Replacing RPi 2B -> 3B+ : Worth it?
Replies: 27
Views: 1796

Re: Replacing RPi 2B -> 3B+ : Worth it?

Upgrading to gigabit buys you at most a 3x performance increase, in the case of my setup only 2x, and a whole slew of flow control requirements because the gigabit adapter can not actually receive at gigabit speeds The original 3B barely works at 1.2Ghz, not because of thermal cooling which can be ...
by RichardS
Thu Jun 07, 2018 1:50 am
Forum: General discussion
Topic: Replacing RPi 2B -> 3B+ : Worth it?
Replies: 27
Views: 1796

Re: Replacing RPi 2B -> 3B+ : Worth it?

I agree with that assessment with the caveat that Eben probably already had a pretty fair idea of what was feasible before making that statement and what he was looking for were minor "around the edges" possibilities. While I don't really *expect* a Pi4B around the next anniversay, neither would I ...
by RichardS
Wed Jun 06, 2018 4:55 pm
Forum: General discussion
Topic: Just bought a Rasberry Pi Zero W, Now what?
Replies: 4
Views: 299

Re: Just bought a Rasberry Pi Zero W, Now what?

The Pi Zero W is one of my favorite SBCs - tiny yet incredibly powerful compared to other small hobby boards like the various Arduino models. That said, as several others have pointed out, the Pi Zero will struggle a bit on heavy duty applications like web browsing due to it's limited single core CP...
by RichardS
Wed Jun 06, 2018 4:11 pm
Forum: General discussion
Topic: Replacing RPi 2B -> 3B+ : Worth it?
Replies: 27
Views: 1796

Re: Replacing RPi 2B -> 3B+ : Worth it?

Arrow Electronics just GAVE me a FREE Raspberry Pi 3b+ for ordering only $50 dollars worth of other stuff - not just FREE shipping a TOTALLY FREE $35 RASPBERRY PI 3B+ The $50 dollars didn't count the Pi3b+ itself, but that's still pretty incredible when you consider that they ALSO threw in FREE over...
by RichardS
Sun Jun 03, 2018 7:27 pm
Forum: General discussion
Topic: Raspberry Pi - export restrictions due to crypto?
Replies: 8
Views: 695

Re: Raspberry Pi - export restrictions due to crypto?

Cryptographically speaking, the genie is kind of out of the bottle, since any modern PC, Laptop, or Smartphone is more than capable of easily performing ultra secure encryption that all the super-computers on earth could not break in a million years. Back in the 90's the U.S. government did go kind ...
by RichardS
Sun Jun 03, 2018 5:12 pm
Forum: Raspbian
Topic: Missing boot messages?
Replies: 3
Views: 287

Re: Missing boot messages?

Thanks for the answers. Yes, checking dmesg or the syslog files is a good option since it will allow a more leisurely and detailed examination of the problem - but is only possible if the system finishes booting and is reasonably stable. I have also tried moving the microSD to a card reader in a PC ...
by RichardS
Fri Jun 01, 2018 10:32 pm
Forum: General discussion
Topic: Yet another microSD thread
Replies: 0
Views: 222

Yet another microSD thread

Just picked up an ATP Electronics AF8GUD3A-WAAXX "industrial grade" 8G microSD from Arrow. It's fairly expensive for an 8G card, at almost 27 USD, but believe it or not, this is a fairly good price for a high endurance industrial grade card. The price is much lower than competing SLC cards, because ...
by RichardS
Fri Jun 01, 2018 9:01 pm
Forum: Raspbian
Topic: Missing boot messages?
Replies: 3
Views: 287

Missing boot messages?

Loaded up the latest Raspbian and noticed that the boot messages have been hidden (except for a single line at the bottom, but it flashes by too quickly to be useful for anything). Is there a boot config.txt or some other configuration option that will restore the previous boot message behavior in t...
by RichardS
Wed May 30, 2018 7:32 am
Forum: Raspbian
Topic: HDMI screen saver blanking Pi Zero vs Pi 3b
Replies: 2
Views: 281

Re: HDMI screen saver blanking Pi Zero vs Pi 3b

Adding the following to /boot/config.txt will turn off HDMI when the screen blanks. Then depending on the monitor/TV brand/model and/or OSD settings, the screen will go to no input and shutdown after a period of time much like the TVservice command does. hdmi_blanking=1 Note that different Kernels ...
by RichardS
Wed May 30, 2018 1:01 am
Forum: Raspbian
Topic: HDMI screen saver blanking Pi Zero vs Pi 3b
Replies: 2
Views: 281

HDMI screen saver blanking Pi Zero vs Pi 3b

I have a Samsung 22 inch 1080 HDMI input television that I use for experimentation with my Raspberry Pi and other SBCs. I noticed something interesting - On my Pi Zero, when the default Raspbian screensaver is triggered, the monitors backlight shuts down indicating that it is properly going into low...
by RichardS
Sun May 27, 2018 6:41 am
Forum: General discussion
Topic: MPEG2 Patent expires this month
Replies: 19
Views: 7283

Re: MPEG2 Patent expires this month

Since the explanation given above relates to MPEG LA licensing royalties, I will be contacting them directly to get clarification as to whether they wish to be a party to fraudulently collecting royalty fees for patents which have expired here in the USA - I hope that they will be amenable to reason...
by RichardS
Sun May 27, 2018 12:59 am
Forum: Troubleshooting
Topic: High CPU usage when booting from USB
Replies: 35
Views: 2897

Re: High CPU usage when booting from USB

did some testing on my own... USB device is 2.5" 1TB HDD in Orico enclosure USB3.0, microSD is class10 . . . USB device boot, blank FAT32 formatted microSD in slot, boots normally, green activity LED flashes about once between 10 to 40 secs (and I get 1 extra FAT32 disk space in the microSD) USB de...
by RichardS
Fri May 25, 2018 7:33 pm
Forum: Troubleshooting
Topic: High CPU usage when booting from USB
Replies: 35
Views: 2897

Re: High CPU usage when booting from USB

When USB booting I often leave an non-bootable SD card in the system for faster boot (eliminates the 5 second delay), and as others have suggested, it also eliminates the kworker issue. When booting from SD card I used to keep a USB flash drive in the system for backing up configuration files, scri...
by RichardS
Fri May 25, 2018 5:03 pm
Forum: Troubleshooting
Topic: High CPU usage when booting from USB
Replies: 35
Views: 2897

Re: High CPU usage when booting from USB

I also got hit with this. It was a nightmare getting USB HD booting to work. I went through 3 SATA - USB adapters, and tried each with 2 different SATA Hard drives before I found ONE combination that would even boot - and now that it is booting, I also seem to be hit by exactly the same FLASHING GRE...
by RichardS
Fri May 25, 2018 8:08 am
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 7773

Re: MPEG2 patents expiring

But falls foul of the lawyers big time. Ubuntu enables software decoding. The codec licence enables hardware decoding. Software is mainly viewed that you can't stop a user doing as they please. Hardware is expected to be locked down unless the fees are paid. You better run that by your lawyer's aga...
by RichardS
Fri May 25, 2018 6:12 am
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 7773

Re: MPEG2 patents expiring

I have an idea, why don't you follow the lead of Ubuntu, the largest distro out there, and simply create a menu entry within raspi-config called: Raspbian Restricted Extras Then when the user selects this option present exactly the SAME kind of disclaimer they use, telling the user that this will en...
by RichardS
Wed May 23, 2018 11:53 pm
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 7773

Re: MPEG2 patents expiring

To whom is the 3B+ a huge disappointment* It's a minor revision, a boost, hence the +. Hence it's still a 3B. I didn't say "huge" disappointment I said "underwhelming" which I think fairly captures how most of us felt who expected a full blown Raspberry Pi 4 release this year - and before someone g...
by RichardS
Wed May 23, 2018 12:17 am
Forum: General discussion
Topic: Pi Zero vs Cray-2 --- Bambi vs Godzilla who will win?
Replies: 7
Views: 722

Re: Pi Zero vs Cray-2 --- Bambi vs Godzilla who will win?

Ok, here's a simplified script to allow you to use the gmp-chudnovsky program I showed you how to compile in my first post to do a massive multi-million digit Pi calculation and then check the accuracy of EVERY DIGIT using a md5sum, which is a really great way to check on the system integrity of you...
by RichardS
Tue May 22, 2018 5:51 pm
Forum: General discussion
Topic: Pi Zero vs Cray-2 --- Bambi vs Godzilla who will win?
Replies: 7
Views: 722

Re: Pi Zero vs Cray-2 --- Bambi vs Godzilla who will win?

Takes 13 m 38 s on my Pi 3b+ - including digit display time. Program reports "Total time" of 458 s before digit display starts. Alan. Great that you were able to get it working Yep, your times sound about right. That's what I also get for 40 Million digits when I run it on my Pi 3's. Pi 3's run abo...
by RichardS
Tue May 22, 2018 7:06 am
Forum: General discussion
Topic: Pi Zero vs Cray-2 --- Bambi vs Godzilla who will win?
Replies: 7
Views: 722

Re: Pi Zero vs Cray-2 --- Bambi vs Godzilla who will win?

by comparing a mid nineteen-eighties Crey-2 supercomputer with a Raspberry Pi Zero. This may be more a demonstration of the importance of mathematics and algorithms: the Chudnovsky algorithm for calculating Pi did not exist until 1989. Coolnesss factor aside, the Cray 2 has Linpack score of 1.4 Gfl...
by RichardS
Tue May 22, 2018 12:45 am
Forum: General discussion
Topic: Pi Zero vs Cray-2 --- Bambi vs Godzilla who will win?
Replies: 7
Views: 722

Pi Zero vs Cray-2 --- Bambi vs Godzilla who will win?

Here's a nice "Pi Day" (Mar 14) demonstration I came up with this year that nicely ties in the Raspberry Pi, the number Pi, and a bit of history, in a way that shows just how far computers have advanced in only a single generation by comparing a mid nineteen-eighties Crey-2 supercomputer with a Rasp...
by RichardS
Mon May 21, 2018 7:47 am
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 7773

Re: MPEG2 patents expiring

The various remarks above are misleading. Not to be contentious, but I did make the distinction - in fact I begged the Pi Foundation to clarify - because the past story has always been that the Pi Foundation (and by extension heroic lovely wonderful folks at Broadcom) had no choice but to pass alon...
by RichardS
Sun May 20, 2018 8:00 pm
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 7773

Re: MPEG2 patents expiring

I have been patient, in the past when I pointed out that ALL the RELEVANT MPEG 2 patents had expired a year ago (I.e. all those that involved technology that the Pi actually needed to decode MPEG2 program streams) - but was told then that due to the intricacies of how patent royalty agreements work,...
by RichardS
Mon Sep 11, 2017 10:55 pm
Forum: General discussion
Topic: STICKY: USB boot now working on Pi3
Replies: 515
Views: 189063

Re: STICKY: USB boot now working on Pi3

There are various ways to find the model of your Pi. One of the simplest (in Raspbian) is to check the contents of /sys/firmware/devicetree/base/model Thanks that's good info. Assuming that the Pi Foundation is smarter than most, and NEVER changes boot code without at least bumping the minor model ...

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