Lots of Lag & Low Power Symbol

IowaBrewer

Hi,

Was having controller problems so I re-installed Raspbian (2-13-20 version) and RetroPie (retropie-4.5.1-rpi2_rpi3). When I turned it on I noticed everything was loading really slowly. EmulatoinStation splash screen sat there for a good 30-60 seconds, and the Under-voltage icon flashed a few times.

When I attempted to load a game I got the following message, alone one that said the game was loading, which lasted for ages: Under-Voltage detected! (0x000d0005)

I'm a total noob with no computer knowledge, so sorry if this is basic, but any suggestions as to what's causing the lag and the under-voltage, and how to resolve the problem? Many thanks!

Pi Model: 3 B+
Power Supply used: ABOX 5v 3A USB
RetroPie: retropie-4.5.1-rpi2_rpi3
USB Devices connected:

keyboard
2-3. Qenker 2-Player LED USB Encoder to Arcade Joystick and LED Arcade Buttons for PC, MAME and Raspberry Pi (x2, one per player)
USB drive

Controller used: Sanwa arcade joystick and 6 bottons/player, 2 player in a cabinet I built
Error messages received: Under-Voltage detected! (0x000d0005)
Emulator: lr-mame 2003

mitu

@IowaBrewer said in Lots of Lag & Low Power Symbol:

When I attempted to load a game I got the following message, alone one that said the game was loading, which lasted for ages: Under-Voltage detected! (0x000d0005)

This means your power source is not providing the necessary current to your PI. As a precaution, the system can throttle down the CPU - possibly causing slowdowns.

Get a proper power source, the official Raspberry PI power source should not have these issues.

rbaker

@IowaBrewer If you are powering the Pi AND all those LEDS and encoder, usb drive (If it's a HDD then it will use 0.5A potentially, then a keyboard etc so with the one power supply, you could be running into major issues depending on what current they all need. If an LED needs about 25mA to light up properly then 10 of them will consume 0.25A out of your 3 available. Then there is the Pi which wants plenty when emulating plus all your other stuff. Then you need to decide if your unofficial power brick is actually designed to power devices or is it designed to charge devices - there is a big difference. If it's a charger, it might not be capable of providing a stable 5.1 Volts for example. Either way, the warning you see means you do not have enough power.

IowaBrewer

Thanks, @rbaker! Good point

IowaBrewer

Thanks again, @mitu!
My office Raspberry PI power source arrived and the problems departed. All resolved. Brilliant! :)

grant2258

@IowaBrewer I know its a bit late but i had these issues with my old pi2 it was the cheap nasty usb cable i was using. I bought a decent one and my power supply's worked well. The same thing happens with the dirt cheap hdmi cables as well sometimes.