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New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 5:23 am
by Smalltimer
Hi, I just received a new Raspberry Pi 4B and flashed the latest Debian Buster to a micro sd card and things went downhill from there.
The first thing to note is that the unit is sloooooooow - I mean, I can't emphasize this enough - slow as molasses in January type slow...
The second thing to note is that everything I do, ends-up in lockups - enter the setup password, locked-up, reboot, try again and again, until it goes.

Though it remains that the system is completely unstable, lock-ups, black screens, and the likes.
With that said, do I have a defective unit?
Is there any way to test it?

Re: New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 7:41 am
by rpiMike
Which model of Pi4?
What make and model of sd card?
What power supply?
Are you using an hdmi screen and wired mouse and keyboard?

Did you flash ‘Raspbian Buster with Desktop’?
Is it fully updated?

Re: New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 2:10 pm
by Smalltimer
Model: Pi 4B
Sandisk Ultra 64GB class 1
Generic Power Supply 5.1v 2.5A
Acer 27" monitor w/HDMI
Raspberry Pi keyboard and mouse

RE: Did you flash ‘Raspbian Buster with Desktop’?
A. Yes, I used Etcher, with the 2019-07-10-raspbian-buster-full.zip image

RE: Is it fully updated?
A. Unfortunately, I am not able to update, as the system will always lock-up during the update.

Re: New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 2:20 pm
by rpiMike
Is it the 1,2 or 4GB Pi4?

Do you ever see the low voltage (lightning) symbol?

I would suggest getting the official 5.1V / 3.0A power supply : https://www.raspberrypi.org/products/ty ... er-supply/

Re: New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 3:42 pm
by Smalltimer
It is the 4GB model
With that said, I can't say I've ever seen the low voltage symbol on the desktop

As for the power supply, I contacted the vendor who sold the kit, and was told that 2.5A was sufficient.
Though I would add that I did not get what I payed for, as the listing showed a 3A type-c power supply, but received a 2.5A micro-usb power supply with a type-c adapter instead.

Re: New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 3:48 pm
by rpiMike
Are you sure the sd card is genuine? Have you got another sd card you can try?

Re: New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 4:16 pm
by Smalltimer
rpiMike wrote:
Wed Aug 28, 2019 3:48 pm
Are you sure the sd card is genuine? Have you got another sd card you can try?
That's an excellent suggestion, I have other cards - will test asap

Re: New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 5:42 pm
by jamesh
This doesn't sound like a power problem ( 2.5 should be enough to avoid this sort of issue). Something else is afoot.

Re: New Raspberry Pi 4B - nothing but problems

Posted: Wed Aug 28, 2019 5:48 pm
by B.Goode
jamesh wrote:
Wed Aug 28, 2019 5:42 pm
This doesn't sound like a power problem ( 2.5 should be enough to avoid this sort of issue). Something else is afoot.


Not to disagree with a Moderator/Engineer, but note that this is a 'generic' power supply, not necessarily a reliable Raspberry Pi specified one. (The poster has another parallel thread discussing this.)

Re: New Raspberry Pi 4B - nothing but problems

Posted: Thu Sep 05, 2019 2:19 am
by Smalltimer
I just wanted to update this thread with my results for anyone facing a similar problem in the future.

The first thing to notes is that I was contending with two issues;

The first being that my power supply was insufficient and that it was causing my HDMI signal to drop.
The second issue was that due to a faulty micro-SD card and was causing very slow performance.

Therefore and with that being said, here are my findings and observations associated with those two issues;

When I use the power supply sent by the manufacturer(12 watt generic), the Pi works with a smaller screen such as a 17" LCD, though it would not work with a larger TV or LCD monitors such as 24" or 32" computer screen.

However, using the very same screens and setup, the official Pi 3 Watt power supply will power all of the screens without issue.
I have tested this thoroughly, and so if anyone is having screen signal output issues, I'd recommend considering the power supply first and foremost.

I would also add, that there were no power signal issues displayed on the UI at any time when testing the HDMI signal on different screens.

- hope this helps

Re: New Raspberry Pi 4B - nothing but problems

Posted: Thu Sep 05, 2019 2:54 pm
by Timescale
Smalltimer wrote:
Wed Aug 28, 2019 2:10 pm
RE: Is it fully updated?
A. Unfortunately, I am not able to update, as the system will always lock-up during the update.
That is not a good thing at all. the SD card is the weak point. Indeed try another one.