Need Help – Followed Overclocking Guide, Now Won't Load – Can't Revert Back

[mahonroy]

Hey guys,
I could use some help. I have the raspberry pie b+, and followed this guide to get it up and running: http://lifehacker.com/how-to-turn-your-raspberry-pi-into-a-retro-game-console-498561192

It has been working great for weeks. I noticed that some games are sluggish (including the sound), so I wanted to attempt overclocking. Here are the settings I used from reading around on the net:

arm_freq=1000
gpu_mem=384
avoid_safe_mode=1
core_freq=500
sdram_freq=500
over_voltage=4

So the retropie logo comes up, then the emulation station logo, then the screen either goes to solid black, or solid white. I thought putting a jumper on pins 5 & 6 would allow it to go into safe mode and change the settings back, but nothing changes.

What do you guys recommend? Any help is greatly appreciated, thanks!

EDIT:
So I was able to edit the config file using my sd card reader on my pc, I set the settings back to how they were before, and it now boots up fine again.

Any suggestions on what I should try as far as overclocking goes? Do I just start backing down numbers 1 by 1 until it loads?

[mahonroy]

So I started off by setting everything back to how it was. I set the core_freq and sdram_freq both to500 and everything is fine still.

Setting the gpu_mem from 128 to 384 is what is causing the problem. How can this be?

[proxycell]

you likely needed to increase the overvoltage, have you tried just using raspi-config? they have a lot of default overclock settings which are safe to use
do you have heatsinks applied?

holding down the SHIFT key (if you have a keyboard connected) will ignore the overclockery

[Author]

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