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by plugwash
Mon Aug 19, 2019 12:50 am
Forum: General discussion
Topic: DELL USB-C charger 45 watt
Replies: 9
Views: 178

Re: DELL USB-C charger 45 watt

That PSU probablly doesn't offer more than 3A. To get the full 45W out of it would require switching up the voltage to 15V which the Pi can't do. So while it may work with the Pi it probablly won't offer any advantages over the official 5V 3A brick. Furthermore the Pi4 has a design flaw which causes...
by plugwash
Sun Aug 18, 2019 7:24 pm
Forum: Troubleshooting
Topic: My raspberry pi "exploded"
Replies: 5
Views: 165

Re: My raspberry pi "exploded"

A short in the DC power cable would not have caused the power section on the Pi to blow up like that. This looks very much like a fault in the power supply allowing mains onto it's output and that mains finding a path via the cable, the pi and the TV destroying stuff along the way. I know you say "T...
by plugwash
Tue Aug 13, 2019 3:10 pm
Forum: Raspbian
Topic: Buster bug report thread
Replies: 164
Views: 15503

Re: Buster bug report thread

I'm not 100% sure but it's possible that you just didn't wait long enough.

The problem is some storage devices can take quite a while to wake up. So the kernel has to wait quite a while before it can be reasonablly sure that the root filesystem isn't going to show up.
by plugwash
Thu Aug 08, 2019 10:21 pm
Forum: General discussion
Topic: To the Raspberry Zero Production line...
Replies: 41
Views: 1529

Re: To the Raspberry Zero Production line...

ISO 261 and ISO 262 metric screw sizes are based on the R10 and R5 series. For sufficiently loose values of "based on". It seems that the ISO 261 "first choice" values are based on a R10 series but rounded inconsistently. The "second choice" values seem to be based on R20 but with some values missi...
by plugwash
Thu Aug 08, 2019 9:27 pm
Forum: General discussion
Topic: To the Raspberry Zero Production line...
Replies: 41
Views: 1529

Re: To the Raspberry Zero Production line...

FWIW: 2.5 mm standoffs in black nylon https://www.amazon.com/Female-Standoff-Assortment-Motherboard-Raspberry/dp/B07D5T1TXV/ 240 pieces 240 peices total in the box, but only 80 of them are standoffs, the rest of them are screws and nuts. Still not a bad deal if you don't care about the length or yo...
by plugwash
Thu Aug 08, 2019 4:01 pm
Forum: Troubleshooting
Topic: Is Midori expected to run in Buster? Segmentation fault?
Replies: 8
Views: 252

Re: Is Midori expected to run in Buster? Segmentation fault?

I have just uploaded a new version of webkit2gtk, it should hit the public repo in a few hours.

Testing would be appreciated.
by plugwash
Thu Aug 08, 2019 3:06 pm
Forum: General discussion
Topic: To the Raspberry Zero Production line...
Replies: 41
Views: 1529

Re: To the Raspberry Zero Production line...

I suspect the issue is the clearances needed to make sure that even with a slightly oversized screwhead/spacer body and a screw/spacer not perfectly aligned on the hole that it can't accidentally short anything out.
by plugwash
Thu Aug 08, 2019 2:07 pm
Forum: Troubleshooting
Topic: Is Midori expected to run in Buster? Segmentation fault?
Replies: 8
Views: 252

Re: Is Midori expected to run in Buster? Segmentation fault?

Previously we had the javascript JIT disabled in webkit2gtk because it failed to build for armv6, however at some point during the buster cycle it started building successfully, from your reports it sounds like it doesn't actually work on armv6.
by plugwash
Tue Aug 06, 2019 7:21 pm
Forum: General discussion
Topic: Why moving to 64bit?
Replies: 169
Views: 6601

Re: Why moving to 64bit?

From a historical perspective, I believe Microsoft waited many years after x86-64 hardware was in circulation before it offered a 64bit OS. Windows XP proffesional x64 edition was released in april 2005, about 2 years after the first x86-64 chips started shipping. Unfortunately windows XP proffesio...
by plugwash
Tue Aug 06, 2019 5:27 pm
Forum: Troubleshooting
Topic: Dead HDMI
Replies: 2
Views: 78

Re: Dead HDMI

The components in question are not shown on the reduced schematics but I believe that they are common mode chokes to reduce EMC. I'm pretty sure the board will work fine if you just link it out (the original Pi didn't have them). To link it out you need to connect a wire from the top left pad (with ...
by plugwash
Tue Aug 06, 2019 1:28 pm
Forum: Raspbian
Topic: Buster bug report thread
Replies: 164
Views: 15503

Re: Buster bug report thread

Is there a problem with the package python3-ws4py on the Buster repository? Yes, it's broken :/, specifically it's not compatible with python 3.7. There was a patch, but it seems it never got uploaded for some reason. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903529 It seems Debian removed ...
by plugwash
Thu Jul 25, 2019 12:54 am
Forum: Beginners
Topic: Fried a new PI4?
Replies: 7
Views: 294

Re: Fried a new PI4?

Are you sure you are using the latest version of noobs? Are you sure your card is formatted as fat32? Do you have any other Pis you can try the card in? IMO your problem seems unlikely to be related to the power supply. A compliant USB C supply should not supply more than 5V unless explicitly asked ...
by plugwash
Wed Jul 24, 2019 12:08 pm
Forum: Raspbian
Topic: Testing repository not updated but Bullseye is?
Replies: 2
Views: 246

Re: Testing repository not updated but Bullseye is?

looks like I screwed up updating the symlinks. Specifically I use ln -fs where I should have used ln -fns .

Should be fixed on the next update run.
by plugwash
Tue Jul 23, 2019 12:20 pm
Forum: Other programming languages
Topic: Introduction to BBC BASIC
Replies: 544
Views: 23748

Re: Introduction to BBC BASIC

Speaking of colour, I understand there was an American edition of BBC Basic such that the COLOUR statement appeared as COLOR when the exact same tokenised source code was loaded into the editor. That's right. All versions of BBC BASIC will accept either COLOR or COLOUR on input IIRC the original BB...
by plugwash
Tue Jul 23, 2019 8:02 am
Forum: Advanced users
Topic: RPi4 not booting with two FTDI chips attached
Replies: 4
Views: 310

Re: RPi4 not booting with two FTDI chips attached

Unfortunately I believe the other report was in a private forum, so even if I could find the link you wouldn't be able to access it.
by plugwash
Sat Jul 20, 2019 11:32 pm
Forum: Advanced users
Topic: RPi 4 USB-C socket as host
Replies: 9
Views: 544

Re: RPi 4 USB-C socket as host

As I understand it the issue is that the USB C detection wiring is not set up for dual role, this means two things. 1. You have to force the mode to use the port in host mode because the Pi can't detect that what is plugged in is a device and not a host. 2. You may have problems if you use a C to C ...
by plugwash
Sat Jul 20, 2019 6:44 am
Forum: Advanced users
Topic: RPi4 not booting with two FTDI chips attached
Replies: 4
Views: 310

Re: RPi4 not booting with two FTDI chips attached

I saw a report of a similar issue with a USB switch box. A compliant USB device must not drive any of the USB lines before power is detected on VBUS. Apparently on the pi4 leakage currents from non-compliant devices will stop the power rails dropping to zero when turned off which in turn stops the P...
by plugwash
Thu Jul 18, 2019 6:46 pm
Forum: Raspbian
Topic: sonic-pi 3.10 for buster available for testing.
Replies: 0
Views: 450

sonic-pi 3.10 for buster available for testing.

Add deb http://plugwash.raspbian.org/sonic-pi buster-sonicpi main to your sources.list apt-get update && apt-get install sonic-pi sonic-pi-server sonic-pi-samples I have done a basic smoke test of running the application and trying out the first example in the tutorial, but i'm not a sonic-pi guy so...
by plugwash
Tue Jul 16, 2019 7:01 pm
Forum: Raspbian
Topic: FreeCAD on PI4 and Raspbian Buster.
Replies: 49
Views: 2763

Re: FreeCAD on PI4 and Raspbian Buster.

jbeale wrote:
Tue Jul 16, 2019 6:43 pm
Is this relevant to the issue?
FreeCAD crashes on creating a new document or opening a file
https://www.freecadweb.org/wiki/FAQ#Fre ... ing_a_file
Doesn't look like it, everything seems to be built against the same version of libCoin.
by plugwash
Mon Jul 15, 2019 3:21 am
Forum: General discussion
Topic: Pi 4 PCB Defect? (fiberglass thread loose)
Replies: 15
Views: 1220

Re: Pi 4 PCB Defect?

The insulating parts of PCBs are made from fiberglass soaked in resin. What it looks like happened to me is that while milling the board to shape a fiber that was right on the edge tore out when the board was milled into shape. Normally designers keep the actual tracks a fair distance away from the ...
by plugwash
Sun Jul 14, 2019 2:09 am
Forum: Beginners
Topic: 128GB SD Won't Work
Replies: 7
Views: 396

Re: 128GB SD Won't Work

The raspberry pi needs the first partition on the SD card to be FAT16 or FAT32. Unfortunately, while SDHC cards and SDXC cards are much the same on the electrical level the SD card association decided that SDXC cards should be formatted as exFAT. So you have basically two options. 1. Find a third-pa...
by plugwash
Sun Jul 14, 2019 12:07 am
Forum: Beginners
Topic: After soldering a pin header, can't flash LED anymore
Replies: 6
Views: 299

Re: After soldering a pin header, can't flash LED anymore

The good news is I don't think you have destroyed anything, I just don't think you have made a successful joint to the pads. Far from burning stuff I don't think you have used enough heat. Also on many pads I don't think you have used enough solder. You need to keep the heat on until the solder flow...
by plugwash
Sat Jul 13, 2019 11:10 pm
Forum: Raspbian
Topic: FreeCAD on PI4 and Raspbian Buster.
Replies: 49
Views: 2763

Re: FreeCAD on PI4 and Raspbian Buster.

I didn't try to actually do anything, I just loaded the GUI, I thought that was what at least some people were having trouble with.
by plugwash
Sat Jul 13, 2019 3:28 pm
Forum: Raspbian
Topic: archive.raspberrypi.org error
Replies: 15
Views: 5742

Re: archive.raspberrypi.org error

Have you looked in /etc/apt/sources.list.d ?
by plugwash
Sat Jul 13, 2019 1:19 pm
Forum: Raspbian
Topic: FreeCAD on PI4 and Raspbian Buster.
Replies: 49
Views: 2763

Re: FreeCAD on PI4 and Raspbian Buster.

Can people who have had trouble with the freecad GUI try updating their systems and trying again. I just tried it on a fully updated buster and it seems to run. I think it may have been fixed by a recent LLVM fix I uploaded.

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