RE: Upgrade to Turbo mode without reflashing

bobc47 — Tue, 25 Sep 2012 17:38:59 GMT

I followed your suggestions and it worked for me but the pi seemed to hang after giving a "this may take a few minutes" warning, I never got any confirmation of successfully updating the firmware. After 2 hours i reset the power and checked the version and that showed I was running the latest version.

I am using a usb charger that is rated at 1a and I usually get 4.87v at the test points; when I thought the pi was hung the screen was blank and the mouse and keyboard did not elicit any response from the system. i checked the voltage and it was down to 4.74v so i suspect I dipped below the drop dead violtage; my board has jumper in place of the fuses so it's one of the later ones.

I had the board hang once before when doing a sudo apt-get upgrade and that may have been do tho a sag as well. I think I'll switch over to a 5v 3.5a source (soldered to the board) that I can tweak the voltage on and set so I have 5.0v at the board so i don't have to worry about voltage dips.

RE: Upgrade to Turbo mode without reflashing

fustini — Fri, 21 Sep 2012 17:06:57 GMT

A tip for Atrix lapdock users: I wouldn't recommend overclocking when powering the Pi from the lapdock. I found the Pi would reset when I would start a level in Quake with Turbo mode enabled, while it would work fine with overclocking turned off. I suspect this is because the Pi pulls more current in Turbo mode than the lapdock can provide.