Raspberry Pi Forums

mwrich4

I tried the images linked above on the latest 'rpi-update'(ed) code for my Pi4 connected to the Lapdock screen and still no rainbow and no 4 raspberries. I also don't see the desktop (set at 1366x768). I have hdmi_force_hotplug=1 so the system will allow VNC with no monitor connected. Let me know if...

mwrich4

OK, here a link to a zip of the test firmware. https://drive.google.com/open?id=1xBfTKHzreJ3-LhKwooNWC2Lh5Sr8apaE This is very much beta. I'm interested to see whether it correctly detects odd monitors with non-standard timings. I don't have anything like that so am relying on EDID dumped from othe...

mwrich4

I was so happy to have something work, I forgot this was in my config.txt # uncomment to force a specific HDMI mode (this will force VGA) hdmi_group=2 hdmi_cvt=1366 768 60 hdmi_mode=87 When I commented out the 3 lines like a clean system, the HDMI lapdock screen was not detected. Unplugging the HDMI...

mwrich4

Ran 'rpi-update' today on my latest card image. After a cold boot, the Rpi4 with my Atrix seems to be working as it did for previous RasPis. I'll update if I find this is not true. Thanks again for the response JamesH on this thread "https://github.com/raspberrypi/firmware/issues/1202". I expect tha...

mwrich4

In https://github.com/raspberrypi/firmware/issues/1202, 6by9 (a Raspberry Pi engineer) said: These blocks being the part of the chip that produces the display - HVS being Hardware Video Scaler. A fix for the bug will be available in the next few days. Once it is, run the following to get it: sudo r...

mwrich4

Actually, per https://github.com/raspberrypi/firmware/issues/1202 can you try this instead: hdmi_group=2 hdmi_cvt=1366 768 60 hdmi_mode=87 adding/changing these values in /boot/config.txt may have helped a bit. I'm not sure whether ultimately the above worked or if was simply connecting the Samsung...

mwrich4

I installed edid-decode as recommended above. edid-decode.txt.gz With the recommend change to /boot/config.txt, I didn't see the post screen just now. Plus, the Xconsole was not started without me first booting with my main screen connected instead of the Lapdock. The pi desktop is set to 1280x720 b...

mwrich4

the changes suggested allow me to glimpse the rainbow and 4 berries screens

I will try more later.

edid.dat.gz: rpi4 output; (172 Bytes) Downloaded 29 times

edid.parse.txt.gz: rpi4 output text form; (1.03 KiB) Downloaded 36 times

mwrich4

I have a 'known good' monitor I've used for ALL of my Raspi boards from the first through 3B. Having it not work for my new Raspi 4-4GB, sent me on the will not boot path for a few hours. I've seen others mention it in the forums but not as a clear topic. I tried with the 3.2 noobs (no boot screen) ...

mwrich4

my pi4 works fine on my main telly but I bought a little screen for it which I can't get anything from (not even the initial rainbow splash) It works super with pi3 - giving really clear readable text in 1080p even with tiny fonts! so I really would like to get this monitor working with my pi4... e...

mwrich4

Just received a Pi 4, 4GB from Canakit.com. I ordered it via Amazon on Prime Day.

They still show having them in stock as of yesterday.

mwrich4

After some digging ... There are a couple of notable Git projects: 1) https://github.com/notro/fbtft 2) https://github.com/juj/fbcp-ili9341 #1 mentions that it is now part of the kernel build tree. #2 is a customized implementation similar to #1 but offers optimizations for SPI/display data bandwidt...

mwrich4

Additional thoughts. I've written and implemented a touch LCD on a bare metal project before. There are a lot of pieces to craft and it was tedious. In an effort to avoid reinventing the wheel, I had hoped that the rich development environment of *nix would have widgets already built for these tasks...

mwrich4

Has anyone found a method for developing and using the common 3.5 inch waveshare board (LCD, touchscreen via SPI) ? I would like to see it used as a separate device for GUI, not cloning the main screen. Any language and/or platform is fine. I think it would be worth a post a blog with a simple proje...

mwrich4

Esoteric arguments benefit no one but the participants. It is most likely they were concerned, as so many are, about SD card support for a high-density card. Most people are not familiar with the subtleties of flash memory cards not being referred to as RAM or memory by purists. We have a large prop...

mwrich4

Yes, the 128GB will work as a flash drive.

( for a site of so-called experts, why does the simplest response require so much bickering and still not answer the question directly)

mwrich4

As they say "I grabbed my popcorn" and looked at this thread after seeing the title the current tail. I was happy to see the OP was able to feel some relief and returned to voice their issues. I've been an avid tinkerer my whole life. Programming since age 14 on a teletype, I'm now 55. I have develo...

mwrich4

That's a wide range, you want in? I would appreciate if we took the time to write out acronyms in general, and non obvious ones in particular. (Asking for explanations of acronyms several times is odd.) It sounds like you have a large scale project in mind. You should state your credentials and you...

mwrich4

I think the thing to remember is this: while the raspberry pi processor chip uses familiar building blocks, the design and implementation were towards the goal of making a small minimalist hobbyist computer system in a tiny space. Trade-offs were made, functionality was not the prime goal. Reducing ...

mwrich4

To those who claim to run 24/7 without issues: I'm pretty sure your use-cases are not really write-heavy, am I right? Write-heavy implementations using an SSD or even a microSD, both based on flash are going to wear out the chip. 10,000 write-erase cycles can go by very quickly in a poorly implemen...

mwrich4

I'm going to try to go away silently ... the group here is fixated on commercial order type thoughts. As a tinkerer, the edge connected compute module is overkill and much pricier to implement a 1-off idea, since it requires a custom board for each implementation. The PiZero (or even a full Pi) was ...

mwrich4

Until this weekend (and this thread), I 'assumed' that the 1 per person limit was rationing similar to what we experienced when the first raspberry pis were released. I think that one per person at a discount was a decent reason, but why not say THAT more clearly. Perhaps, if supplies are adequate, ...

mwrich4

I would rather hope for a clarification about the apparent rationing still in effect. Yes, it's understandable that margins are slim. I appreciate the effort to build a low-cost platform to distribute to educators. But, based on the site, my thoughts are that the low-cost ZeroPi platform just helps ...

mwrich4

The official line is that it is 1 per person at the five or ten dollar price for Pi zero and Pi zero w respectively. I don't really intend to stir the pot. It would be good to see a source[link] for your comment. I don't ever recall hearing about purchase limits other than initial demand spikes ver...

mwrich4

It seems the other 2 are busy bickering and ignoring your post. Without knowing the specs for the lighting and solid state relays. It might be easiest to experiment with 1 light setup as a representative. 2 would be more handy. Set up 1 with a very short setup for wiring and the other with a 'max' l...

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