Splash screen miniature at upper corner

[Valinath]

Good evening fellas!

I've been lurking the forums for a long time and now i got a small issue so it is time to get registered

I have an interesting problem and i have not seen anyone else on the web with the same issue.
Both hardware and software is running just fine, but after booting the rainbow splash screen goes into a small icon and positions itself at the displays upper right corner.

I went into /boot/config.txt and put in "disable_splash=1" and rebooted, still the same issue.
Since i don't use the display for anything more than the commandline at this moment, it is not a very big issue but i don't wanna burn the LCD as it sticks ontop of the black screensaver.

And I'm very interested to figure out what's behind this issue!
Pictures can be posted if needed.

Setup:

Rpi3
PiDisplay 7" connected at DSI, power from GPIO#2 (5V) and ground at GPIO#6

I finished an installation at work with the exact same setup, exept i made that one with a raw raspbian image, this one is with noobs, as I've never tried it before. (Same raspbian version (latest jessie))

Thanks for taking the time reading this, I hope you all have a great evening!

Regards,
Val

[eastrader]

I see the same thing on my system. It boots, and runs fine, no extra heat. I have a usb power line monitor, and it never goes below 5.1vdc and never more than .27amps.. so I don't know. I have tried several 5volt power units and I get the same thing on each one. maybe the low volt sense is off. Wish there were a way to calibrate it.

[DougieLawson]

That small rainbow square in the upper right of the display means your power supply is not providing a high enough voltage to run your RPi with its current load. It's below 4.75V. You need a power supply that can provide a steady 5.0V with enough amps to power your RPi and all of your USB peripherals, for a 2B that's 2 amps, for a 3B that's 2.5 amps.

[drgeoff]

I've been lurking the forums for a long time and now i got a small issue so it is time to get registered

I have an interesting problem and i have not seen anyone else on the web with the same issue.
Both hardware and software is running just fine, but after booting the rainbow splash screen goes into a small icon and positions itself at the displays upper right corner.

The only explanation for the first two sentences I have quoted is that Valinath lurks with his eyes closed! There have been numerous posts about that warning square and the reason. Low voltage from inadequate PSU and/or a cable that is too long or too thin or uses wet string instrad of real copper. There is even a complete section about that square in the sticky viewtopic.php?f=28&t=58151

As it is not a splash, that line in config.txt does not control it.

[drgeoff]

I see the same thing on my system. It boots, and runs fine, no extra heat. I have a usb power line monitor, and it never goes below 5.1vdc and never more than .27amps.. so I don't know. I have tried several 5volt power units and I get the same thing on each one. maybe the low volt sense is off. Wish there were a way to calibrate it.

If you are monitoring at the PSU end of the cable you don't know what voltage the RPi is getting at the other end.

[rpdom]

If you are monitoring at the PSU end of the cable you don't know what voltage the RPi is getting at the other end.

+1

A good place to measure is the 5V GPIO pins 2 or 4, and 0V pin 6 (or any other ground point on the board).

[eastrader]

Yes, I have 5.0 volts measured with a calibrated digital VOM. Using pins 2 &6. The inline measures 5.01 90% of the time as the lowest point.

[Dis93]

+1 to rpdom, drgeoff, and DougieLawson for helpful posts.

[Dis93]

(I also realise my double digit post count pales compared to the stalwarts with quadruple, and quintuple digit post counts )

[Valinath]

My bad, I've must have missed those posts.

Since it looks like a small splash, it is very hard to figure out that it is an actual warning for low voltage.
I thank you kindly for all contributions in this thread, very helpful!

Time to go and grab some PSU's then

Regards,
Val