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by jamesh
Fri Jul 19, 2019 2:51 pm
Forum: Graphics, sound and multimedia
Topic: Using Raspberry Pi for Lobby Presentation
Replies: 2
Views: 64

Re: Using Raspberry Pi for Lobby Presentation

Perfectly feasible. For PiSignage information you'll need to talk to the suppliers of that.

But this is something that is done by a lot of people, you could try PiPresents, and there are other free packages.
by jamesh
Fri Jul 19, 2019 2:31 pm
Forum: Troubleshooting
Topic: RPI 4 video flickering issue
Replies: 7
Views: 205

Re: RPI 4 video flickering issue

Firstly, thank you for taking the time to write back - i appreciate it I've had some slight success since last night - i decided to give LibreELEC a go, and it plays Youtube videos fine (using the add-on), and other videos from my USB stick - with NO annoying flicker. :D The issue is still there wi...
by jamesh
Fri Jul 19, 2019 10:25 am
Forum: General discussion
Topic: Complete description of vcgencmd anywhere?
Replies: 10
Views: 522

Re: Complete description of vcgencmd anywhere?

What do you want to know? I would like to check all of the available commands but most require an unknown argument... Most people have no need of using the majority of vcgencmd's. They are used internally for testing and debugging. The UI for vcgencmd is a bit pants. Could do with much better help,...
by jamesh
Fri Jul 19, 2019 10:24 am
Forum: General discussion
Topic: Pi 4 firmware, software stability improvements
Replies: 66
Views: 6947

Re: Pi 4 firmware, software stability improvements

p30 isn't a slide show. It's perfectly fine for most sane people.

Standard frame rate for cinema is 24....

Not to say that >30 isn't better. It is. But 30 is perfectly usable. And saves a LOT of power.
by jamesh
Fri Jul 19, 2019 10:21 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 713
Views: 62317

Re: Raspberry Pi 4 Thread - general discussion

This is a great example of WebGL performance on Pi4. Pretty impressive.

https://paveldogreat.github.io/WebGL-Fluid-Simulation/
by jamesh
Fri Jul 19, 2019 10:10 am
Forum: Raspbian
Topic: Don't want Raspian Buster!
Replies: 28
Views: 1026

Re: Don't want Raspian Buster!

Giga_Pi wrote:
Fri Jul 19, 2019 9:40 am
Question, can anyone explain why KDE plasma works okay with OpenGL on stretch, but not buster? Thanks!
What error messages do you see when trying to run KDE plasma?
by jamesh
Fri Jul 19, 2019 10:09 am
Forum: Beginners
Topic: PI3B+ Unusable due to screen resolution. Help Please...
Replies: 2
Views: 71

Re: PI3B+ Unusable due to screen resolution. Help Please...

You could try SSH'ing in to the device (if enabled), or just putting the SD card in another computer (with card reader)- the boot partition can be read on Windows.

Then edit config.txt to remove whatever caused the problem.
by jamesh
Fri Jul 19, 2019 10:07 am
Forum: General discussion
Topic: Pi4 - custom dual display configuration
Replies: 34
Views: 1019

Re: Pi4 - custom dual display configuration

One option is to specify an EDID. https://www.raspberrypi.org/documentati ... t/video.md

See the hdmi_edid_filename command.
by jamesh
Fri Jul 19, 2019 8:54 am
Forum: Troubleshooting
Topic: GPIO pins having trouble
Replies: 4
Views: 90

Re: GPIO pins having trouble

I believe you have destroyed the GPIO circuitry in the SoC. This is unfixable.
by jamesh
Fri Jul 19, 2019 8:52 am
Forum: Troubleshooting
Topic: RPI 4 video flickering issue
Replies: 7
Views: 205

Re: RPI 4 video flickering issue

I suspect you are seeing 'tearing' about half way down the image, which is a side effect of running through X windows and its single buffered framebuffer. Try running full screen rather than in a window.
by jamesh
Thu Jul 18, 2019 7:40 pm
Forum: Troubleshooting
Topic: Pi4 crashes randomly
Replies: 25
Views: 962

Re: Pi4 crashes randomly

UPADATE: I am still having random crashes, especially in chrome and GMAIL. I have yet to track down the issue with my 1 GB model. However, my 4 GB model on same set up ( official power supply, same card) works like a charm. I am hoping the team is aware and is working on the issue and its not a fau...
by jamesh
Thu Jul 18, 2019 7:35 pm
Forum: Troubleshooting
Topic: Overscan Now Ignored for DMT Video Modes
Replies: 8
Views: 152

Re: Overscan Now Ignored for DMT Video Modes

It is/was a conscious decision to ignore overcan in DMT modes. DMT is for monitors, and they should not require overscan to be enabled at all. CEA, being TV, may or may not require overscan.
by jamesh
Thu Jul 18, 2019 4:08 pm
Forum: General discussion
Topic: Pi4 Cooling
Replies: 23
Views: 1133

Re: Pi4 Cooling

I'm going to try overclocking mine and running some stress tests. I do have a fan on mine, but it is on the case rather than right up to the cpu, so I'll see how it performs. Sounds like this shim fan would work well in overclocking situations. It doesn't need much airflow of the board to cool it q...
by jamesh
Thu Jul 18, 2019 3:58 pm
Forum: Advanced users
Topic: RPI4 Bluetooth Chip
Replies: 2
Views: 122

Re: RPI4 Bluetooth Chip

Does anyone know what Bluetooth Chip is used on the RPI4 and where can i found the datasheet about it? I couldn't be able to find this information on the RPI4 documentation (Documentation on RPI 3+ mentions this information but nowhere for the RPi4). Same at the 3B+. The update to BT 5.whatever is ...
by jamesh
Thu Jul 18, 2019 3:05 pm
Forum: HATs and other add-ons
Topic: PoE hat, Raspberry Pi 4, not able to power off
Replies: 39
Views: 1849

Re: PoE hat, Raspberry Pi 4, not able to power off

Currently awaiting a returned Pi and PoE HAT to test as we have been unable to replicate this in the office. Its on it way!
by jamesh
Thu Jul 18, 2019 1:27 pm
Forum: General discussion
Topic: PI 4 128gb SD card
Replies: 9
Views: 275

Re: PI 4 128gb SD card

Yes, the install/first run automatically resizes partitions on the card to use the entire space.
by jamesh
Thu Jul 18, 2019 1:26 pm
Forum: Troubleshooting
Topic: Motion image is too bright
Replies: 5
Views: 1111

Re: Motion image is too bright

Same issue here. It doesn't make sense. Is highly dependant on resolution. eg 480p -> ok 1024x640 (note this 1.6 ratio is very odd) -> ok 800x600 -> OK 720p,1020p-> BROKEN Note: you should not use "auto_brightness on" as the camera has an auto brightness feature implemented. This is said on the mot...
by jamesh
Thu Jul 18, 2019 1:20 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 & HDD
Replies: 4
Views: 161

Re: Raspberry Pi 4 & HDD

Purely a guess, but it does sound power related, since I presume you have tried a different USB cable.
by jamesh
Thu Jul 18, 2019 11:00 am
Forum: General discussion
Topic: Comparing Raspberry Pi to Apple II
Replies: 9
Views: 1927

Re: Comparing Raspberry Pi to Apple II

Winner! Oldest thread necro of the month!

2013->2019. 6.5 years!
by jamesh
Thu Jul 18, 2019 10:54 am
Forum: Camera board
Topic: [MOTION] Overexposure using YUV format
Replies: 16
Views: 1394

Re: [MOTION] Overexposure using YUV format

kiteloop wrote:
Thu Jul 18, 2019 10:20 am
same problem with overexposing and motion here. im about to give up
Do you get the same problems using raspistill/raspivid when outputting YUV?

It's odd, because the output format has no influence over the exposure - its done after all the camera image processing has taken place.
by jamesh
Thu Jul 18, 2019 10:30 am
Forum: General discussion
Topic: RPi 4 - Dual screen in CLI
Replies: 12
Views: 401

Re: RPi 4 - Dual screen in CLI

hans_ar wrote:
Thu Jul 18, 2019 10:14 am
Thank you for your answer, so in GUI I can run strached video?
Not sure. I think so on the Pi4 but you would need to try it.
by jamesh
Thu Jul 18, 2019 9:55 am
Forum: General discussion
Topic: RPi 4 - Dual screen in CLI
Replies: 12
Views: 401

Re: RPi 4 - Dual screen in CLI

Thanks for your answer. I want to play video for example, resolution 3840x1080 on two screens (extended), but in CLI. The H264 decoder cannot handle that width - are you planning to do normal 1920x1080 and stretch it? Yes, i want to strech it but also i want to play videos with 3840x1080. Thanks On...
by jamesh
Thu Jul 18, 2019 9:54 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 275
Views: 51793

Re: Raspberry Pi 4 temperature

I did pre-order this - https://geekworm.com/collections/new-arrivals/products/raspberry-pi-4-model-b-armor-aluminum-alloy-case-protective-shell (will share results once I have it). https://cdn.shopify.com/s/files/1/0068/8481/9002/products/PI4B-armor-case-IMG-6321_1200x1200.jpg Looks like that's wha...

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