Newbie question: All I see is gradient square

[Kevin Cole]

Hi,

I just got a Raspberry Pi 2 with a 10 inch screen from Adafruit, and
downloaded the ffos-rpi-04.img tarball
(https://www.dropbox.com/s/4udfp704u2hmemx/ffos-rpi-04.img.tar.bz2)
from the Hacking page
(https://wiki.mozilla.org/Hacking_b2g_on_Raspberry_Pi) on the wiki two
days ago. I was a bit surprised that I couldn't find MD5 or SHA*
checksums, but it appeared to burn to the SD okay.

First, I tested with a fresh Raspbian yesterday, and all is well with
the hardware -- though I also followed Adafruit's suggestion of using
their /boot/config.txt file. (I didn't try with the default config.txt
file.)

With Firefox OS, all I get is a rainbow-gradient square with two black
sidebars to center it in the display. Specifically, the display is:

10.1" Display & Audio 1280x800 IPS - HDMI/VGA/NTSC/PAL
PRODUCT ID: 1694
https://www.adafruit.com/products/1694

And the config.txt file for Raspbian is at:
https://learn.adafruit.com/hdmi-uberguide/1694-10-dot-1-display-and-audio-1280x800-ips

I don't know anything about Firefox OS. So I haven't tried messing
with the config.txt there to see if that's the issue.

Suggestions?

Thanks!

P.S. The partitioning on the SD card seems to have a unallocated space
between partitions. To make full use of the SD card, should I just
extend the last partition?

[Fabrice Desré]

On 02/25/2015 08:10 AM, Kevin Cole wrote:
> Hi,
>
> I just got a Raspberry Pi 2 with a 10 inch screen from Adafruit, and
> downloaded the ffos-rpi-04.img tarball
> (https://www.dropbox.com/s/4udfp704u2hmemx/ffos-rpi-04.img.tar.bz2)
> from the Hacking page
> (https://wiki.mozilla.org/Hacking_b2g_on_Raspberry_Pi) on the wiki two
> days ago. I was a bit surprised that I couldn't find MD5 or SHA*
> checksums, but it appeared to burn to the SD okay.
>
> First, I tested with a fresh Raspbian yesterday, and all is well with
> the hardware -- though I also followed Adafruit's suggestion of using
> their /boot/config.txt file. (I didn't try with the default config.txt
> file.)
>
> With Firefox OS, all I get is a rainbow-gradient square with two black
> sidebars to center it in the display. Specifically, the display is:
>
> 10.1" Display & Audio 1280x800 IPS - HDMI/VGA/NTSC/PAL
> PRODUCT ID: 1694
> https://www.adafruit.com/products/1694
>
> And the config.txt file for Raspbian is at:
> https://learn.adafruit.com/hdmi-uberguide/1694-10-dot-1-display-and-audio-1280x800-ips
>
> I don't know anything about Firefox OS. So I haven't tried messing
> with the config.txt there to see if that's the issue.
>
> Suggestions?

The RPi 2 is not supported yet afaik. Help welcome!

Fabrice
--
Fabrice Desré
b2g team
Mozilla Corporation

[Chris Jones]

​In particular, the Raspberry Pi 2 has an ARMv7 CPU, which means a "more
stock" android image should work. A good bit of effort of the RPi1 bringup
was supporting ARMv6. There's some mention of android with the RPi2, but I
couldn't find anything more concrete.

But that said, I don't know of any reason off-hand why the ARMv6 image for
RPi1 (ffos-rpi-04.img) wouldn't work with RPi2. If you're able to get
output from adb or a linux serial console by following the instructions here

https://wiki.mozilla.org/Hacking_b2g_on_Raspberry_Pi#Preparing_a_development_environment

that could help diagnose a "dumb bug".

Thanks!

Cheers,
Chris​